ubuntu-frame start issue

[Sponge-Bas]

I've been running into this ubuntu-frame bug:

2026-01-16T11:38:04-07:00 systemd[1]: Started Service for snap application ubuntu-frame.daemon.
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849434]: ++ snapctl get display
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]: + '[' -z 'layouts:
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]: # keys here are layout labels (used for atomically switching between them).
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]: # The yaml anchor '\''the_default'\'' is used to alias the '\''default'\'' label
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]:   default:
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]:     cards:
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]:     # a list of cards (currently matched by card-id)
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]:     - card-id: 0
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]:       HDMI-A-1:
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]:         # (disconnected)
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]:       HDMI-A-2:
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]:         # (disconnected)
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]:   side_by_side:
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]:     cards:
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]:     # a list of cards (currently matched by card-id)
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]:     - card-id: 0
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]:       HDMI-A-1:
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]:         # (disconnected)
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]:       HDMI-A-2:
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]:         # (disconnected)' ']'
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]: + disown
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849440]: + sh -c 'sleep 5; mkdir "/run/user/007"; rmdir "/run/user/007"'
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]: + exec nohup /snap/ubuntu-frame/15404/bin/run-frame /snap/ubuntu-frame/15404/bin/graphics-core22-wrapper /snap/ubuntu-frame/15404/usr/local/bin/frame
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]: + [ /snap/ubuntu-frame/15404/bin/graphics-core22-wrapper = --help ]
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849442]: + dirname /run/user/0/snap.ubuntu-frame
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]: + XDG_RUNTIME_DIR=/run/user/0
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]: + export XDG_RUNTIME_DIR
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]: + mkdir -p /run/user/0 -m 700
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]: + [ -n  ]
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]: + exec /snap/ubuntu-frame/15404/bin/graphics-core22-wrapper /snap/ubuntu-frame/15404/usr/local/bin/frame
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]: [2026-01-16 11:38:05.469940] < - debug - > miral: Loaded display configuration file: /var/snap/ubuntu-frame/15404/frame.display
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]: [2026-01-16 11:38:05.522608] <information> mirserver: Starting
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]: [2026-01-16 11:38:05.523833] < - debug - > mirserver: Using Linux VT subsystem for session management
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]: [2026-01-16 11:38:05.524709] <information> mircommon: Loading modules from: /snap/ubuntu-frame/15404/usr/lib/aarch64-linux-gnu/mir/server-platform
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]: [2026-01-16 11:38:05.525181] <information> mircommon: Loading module: /snap/ubuntu-frame/15404/usr/lib/aarch64-linux-gnu/mir/server-platform/graphics-eglstream-kms.so.22
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]: [2026-01-16 11:38:05.525371] <information> mircommon: Loading module: /snap/ubuntu-frame/15404/usr/lib/aarch64-linux-gnu/mir/server-platform/graphics-gbm-kms.so.22
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]: [2026-01-16 11:38:05.525456] <information> mircommon: Loading module: /snap/ubuntu-frame/15404/usr/lib/aarch64-linux-gnu/mir/server-platform/renderer-egl-generic.so.22
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]: [2026-01-16 11:38:05.525525] <information> mircommon: Loading module: /snap/ubuntu-frame/15404/usr/lib/aarch64-linux-gnu/mir/server-platform/server-x11.so.22
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]: [2026-01-16 11:38:05.525593] <information> mircommon: Loading module: /snap/ubuntu-frame/15404/usr/lib/aarch64-linux-gnu/mir/server-platform/input-evdev.so.9
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]: [2026-01-16 11:38:05.531147] <information> mirserver: Found display driver: mir:x11 (version 2.17.2)
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]: [2026-01-16 11:38:05.531417] <information> mirserver: (Unsupported by system environment)
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]: [2026-01-16 11:38:05.531491] <information> mirserver: Found display driver: mir:egl-generic (version 2.17.2)
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]: [2026-01-16 11:38:05.531721] <information> mirserver: Found display driver: mir:gbm-kms (version 2.17.2)
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]: [2026-01-16 11:38:05.545484] < - debug - > gbm-kms: Quirks: checking device with devnode: /dev/dri/card1, driver vc4-drm
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]: [2026-01-16 11:38:05.546562] <information> gbm-kms: Failed to probe DRM device: ./src/server/console/linux_virtual_terminal.cpp(167): Throw in function {anonymous}::DRMDevice::DRMDevice(mir::VTFileOperations&, const char*, std::unique_ptr<mir::Device::Observer>, const std::shared_ptr<mir::LinuxVirtualTerminal::DeviceList>&)
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]: Dynamic exception type: boost::wrapexcept<boost::exception_detail::error_info_injector<std::system_error> >
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]: std::exception::what: Failed to claim DRM master: Device or resource busy
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]: [boost::errinfo_file_name_*] = /dev/dri/card1
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]: [2026-01-16 11:38:05.547634] < - debug - > gbm-kms: Quirks: checking device with devnode: (null), driver
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]: [2026-01-16 11:38:05.548537] < - debug - > gbm-kms: Quirks: checking device with devnode: (null), driver
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]: [2026-01-16 11:38:05.549405] < - debug - > gbm-kms: Quirks: checking device with devnode: (null), driver
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]: [2026-01-16 11:38:05.550625] < - debug - > gbm-kms: Quirks: checking device with devnode: (null), driver
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]: [2026-01-16 11:38:05.551858] < - debug - > gbm-kms: Quirks: checking device with devnode: /dev/dri/card0, driver v3d
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]: Failed to create /root/.cache/mesa_shader_cache for shader cache (Permission denied)---disabling.
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]: [2026-01-16 11:38:05.677089] <information> gbm-kms: Failed to probe DRM device: ./src/platforms/common/server/kms-utils/drm_mode_resources.cpp(39): Throw in function mir::graphics::kms::DRMModeResUPtr {anonymous}::resources_for_drm_node(int)
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]: Dynamic exception type: boost::wrapexcept<std::system_error>
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]: std::exception::what: Couldn't get DRM resources: Operation not supported
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]: [2026-01-16 11:38:05.677474] <information> mirserver: Driver supports:
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]: [2026-01-16 11:38:05.677632] <information> mirserver:    /devices/platform/v3dbus/fec00000.v3d/drm/card0 (priority 0)
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]: [2026-01-16 11:38:05.677736] <information> mirserver: Found display driver: mir:eglstream-kms (version 2.17.2)
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]: [2026-01-16 11:38:05.683771] < - debug - > eglstream: Found EGLDeviceEXT with device extensions: EGL_EXT_device_drm EGL_EXT_device_drm_render_node
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]: [2026-01-16 11:38:05.684913] < -warning- > eglstream: Failed to check DRM modesetting support for device fec00000.v3d: Invalid argument (22)
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]: [2026-01-16 11:38:05.685222] < - debug - > eglstream: Found EGLDeviceEXT with device extensions: EGL_MESA_device_software EGL_EXT_device_drm_render_node
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]: [2026-01-16 11:38:05.685470] <information> eglstream: Failed to query DRM node for EGLDevice: Failed to determine DRM device node path from EGLDevice: EGL_BAD_PARAMETER (0x300c)
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]: [2026-01-16 11:38:05.685552] <information> mirserver: Driver supports:
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]: [2026-01-16 11:38:05.685594] <information> mirserver:    /devices/platform/v3dbus/fec00000.v3d/drm/card0 (priority 0)
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]: ERROR: ./src/server/graphics/default_configuration.cpp(198): Throw in function virtual const std::vector<std::shared_ptr<mir::graphics::DisplayPlatform> >& mir::DefaultServerConfiguration::the_display_platforms()
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]: Dynamic exception type: boost::wrapexcept<std::runtime_error>
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]: std::exception::what: Exception while creating graphics platform
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]: ERROR: ./src/server/graphics/platform_probe.cpp(232): Throw in function std::vector<std::pair<mir::graphics::SupportedDevice, std::shared_ptr<mir::SharedLibrary> > > mir::graphics::modules_for_device(const std::function<std::vector<mir::graphics::SupportedDevice>(const mir::SharedLibrary&)>&, const std::vector<std::shared_ptr<mir::SharedLibrary> >&, mir::graphics::TypePreference)
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]: Dynamic exception type: boost::wrapexcept<std::runtime_error>
2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]: std::exception::what: Failed to find any platforms for current system
2026-01-16T11:38:05-07:00 systemd[1]: snap.ubuntu-frame.daemon.service: Main process exited, code=exited, status=1/FAILURE
2026-01-16T11:38:35-07:00 systemd[1]: snap.ubuntu-frame.daemon.service: State 'stop-sigterm' timed out. Killing.
2026-01-16T11:38:35-07:00 systemd[1]: snap.ubuntu-frame.daemon.service: Killing process 5131 (frame) with signal SIGKILL.

When I reboot it works for a while, then freezes after a couple of hours. When I restart ubuntu-frame I get this issue.

I have another machine set up in the exact same way (as far as I can tell) and it is not having any problems.

:~$ snap info ubuntu-frame ubuntu-frame-osk
name:      ubuntu-frame
summary:   The foundation for many embedded graphical display implementations
publisher: Canonical✓
store-url: https://snapcraft.io/ubuntu-frame
contact:   https://github.com/MirServer/ubuntu-frame/issues
license:   GPL-3.0
description: |
  Ubuntu Frame is an easy-to-use, reliable and secure display server for embedded Linux devices
  allowing developers to deploy graphic applications for kiosks, digital signage, IoT, robotics and
  more.

  With Ubuntu Frame, the graphic application you choose or design gets a fullscreen kiosk window. It
  enables windows behaviours, input from touch, keyboard, and mouse, on-screen keyboard, power
  saving and more.

  Ubuntu Frame streamlines the build and development of products that need graphical output.

  **Benefits**
  * Create maintainable images for kiosks and digital signage solutions in under an hour.
  * Out of the box features such as kiosk mode, on-screen keyboard and power saving for your
  devices.
  * Less code for you to integrate and maintain as it bundles communication protocols, input
  protocols, and security policies into a single kit
  * Compatible with popular toolkits for creating graphical user interfaces like Qt, Flutter,
  electron, and also html5 and java.
  * Built-in security and long-term supported by Canonical.

  If you want to enable **Ubuntu Frame's on-screen keyboard**, please install ubuntu-frame-osk:
  https://snapcraft.io/ubuntu-frame-osk

  To get started with Ubuntu Frame please read the documentation: https://mir-server.io/docs

  Ubuntu Frame is open source, free to use, and long-term supported by Canonical, and will continue
  to be our recommended way to enable embedded graphics on Ubuntu Core.
commands:
  - ubuntu-frame.screenshot
  - ubuntu-frame
services:
  ubuntu-frame.daemon: simple, enabled, inactive
snap-id:      BPZbvWzvoMTrpec4goCXlckLe2IhfthK
tracking:     22/stable
refresh-date: 2025-10-13
channels:
  24/stable:        406-mir2.23.0        2025-12-05 (17658) 38MB -
  24/candidate:     406-mir2.25.2        2026-01-07 (17878) 38MB -
  24/beta:          409-mir2.25.2        2026-01-08 (18953) 38MB -
  24/edge:          409-mir2.26.0~dev182 2026-01-08 (18952) 38MB -
  latest/stable:    99-mir2.13.0         2023-10-05  (5795)  8MB -
  latest/candidate: ↑
  latest/beta:      ↑
  latest/edge:      ↑
  22/stable:        147-mir2.17.2        2025-10-13 (15404)  6MB -
  22/candidate:     ↑
  22/beta:          147-mir2.17.2        2025-08-20 (15404)  6MB -
  22/edge:          ↑
  20/stable:        106-mir2.13.1        2025-10-13 (15406)  8MB -
  20/candidate:     ↑
  20/beta:          106-mir2.13.1        2026-01-07 (18896)  8MB -
  20/edge:          ↑
installed:          147-mir2.17.2                   (15404)  6MB -
---
name:      ubuntu-frame-osk
summary:   On-screen keyboard for Ubuntu Frame, based on Squeekboard
publisher: Canonical✓
store-url: https://snapcraft.io/ubuntu-frame-osk
contact:   https://github.com/MirServer/ubuntu-frame-osk/issues
license:   GPL-3.0
description: |
  This snap contains the Wayland on-screen keyboard Squeekboard, modified and packaged such that it
  can run on Ubuntu Frame.

  For more information please read the [documentation]
  (https://discourse.ubuntu.com/t/ubuntu-frame-osk-documentation/27568)

  * If you do not require an on-screen keyboard, or you want to learn more about Ubuntu Frame,
  please visit [Frame's home page](https://snapcraft.io/ubuntu-frame)
commands:
  - ubuntu-frame-osk.list-layouts
  - ubuntu-frame-osk
services:
  ubuntu-frame-osk.daemon: simple, enabled, active
snap-id:      UaV8aeiyZzQMgUyRCwuJma4Q2IuxA99t
tracking:     22/stable
refresh-date: 9 days ago, at 11:36 MST
channels:
  24/stable:        107-sb1.43.1           2026-01-07 (1299) 95MB -
  24/candidate:     ↑
  24/beta:          107-sb1.43.1           2026-01-06 (1299) 95MB -
  24/edge:          108-sb1.43.1           2026-01-06 (1302) 95MB -
  latest/stable:    44-squeekboard-v1.17.1 2023-10-05  (375) 81MB -
  latest/candidate: ↑
  latest/beta:      ↑
  latest/edge:      107-sb1.43.1           2025-12-18 (1293) 95MB -
  22/stable:        75-squeekboard-v1.17.1 2026-01-07 (1298) 88MB -
  22/candidate:     ↑
  22/beta:          75-squeekboard-v1.17.1 2026-01-06 (1298) 88MB -
  22/edge:          ↑
  20/stable:        51-squeekboard-v1.17.1 2026-01-07 (1280) 80MB -
  20/candidate:     ↑
  20/beta:          51-squeekboard-v1.17.1 2025-12-11 (1280) 80MB -
  20/edge:          ↑
installed:          75-squeekboard-v1.17.1            (1298) 88MB -

[Saviq]

Hi @Sponge-Bas I can see two issues:

1. Failed to claim DRM master: Device or resource busy
   

   This suggests something else is holding onto the DRM node?

2. 2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]:   default:
   2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]:     cards:
   2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]:     # a list of cards (currently matched by card-id)
   2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]:     - card-id: 0
   2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]:       HDMI-A-1:
   2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]:         # (disconnected)
   2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]:       HDMI-A-2:
   2026-01-16T11:38:05-07:00 ubuntu-frame.daemon[849404]:         # (disconnected)
   

   There's no outputs connected?

[Sponge-Bas]

Hi @Saviq, thanks for the quick reply.

You're right that ubuntu-frame didn't see my output device, I didn't notice that. I reinstalled ubuntu-frame and it does find my screen now.
After the reinstall it worked for a couple of days, but now its broken again:

2026-01-20T05:57:40-07:00 systemd[1]: Stopped Service for snap application ubuntu-frame.daemon.
2026-01-20T05:57:40-07:00 systemd[1]: snap.ubuntu-frame.daemon.service: Found left-over process 6053 (frame) in control group while starting unit. Ignoring.
2026-01-20T05:57:40-07:00 systemd[1]: This usually indicates unclean termination of a previous run, or service implementation deficiencies.
2026-01-20T05:57:40-07:00 systemd[1]: Started Service for snap application ubuntu-frame.daemon.
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737634]: ++ snapctl get display
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737602]: + '[' -z 'layouts:
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737602]: # keys here are layout labels (used for atomically switching between them).
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737602]: # The yaml anchor '\''the_default'\'' is used to alias the '\''default'\'' label
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737602]:   default:
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737602]:     cards:
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737602]:     # a list of cards (currently matched by card-id)
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737602]:     - card-id: 0
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737602]:       HDMI-A-1:
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737602]:         # (disconnected)
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737602]:       HDMI-A-2:
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737602]:         # (disconnected)
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737602]:       DSI-1:
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737602]:         # This output supports the following modes: 800x480@59.9
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737602]:         #
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737602]:         # Uncomment the following to enforce the selected configuration.
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737602]:         # Or amend as desired.
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737602]:         #
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737602]:         state: enabled  # {enabled, disabled}, defaults to enabled
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737602]:         mode: 800x480@59.9      # Defaults to preferred mode
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737602]:         position: [0, 0]        # Defaults to [0, 0]
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737602]:         orientation: normal     # {normal, left, right, inverted}, defaults to normal
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737602]:         scale: 1
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737602]:         group: 0        # Outputs with the same non-zero value are treated as a single display
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737602]:   side_by_side:
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737602]:     cards:
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737602]:     # a list of cards (currently matched by card-id)
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737602]:     - card-id: 0
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737602]:       HDMI-A-1:
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737602]:         # (disconnected)
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737602]:       HDMI-A-2:
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737602]:         # (disconnected)
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737602]:       DSI-1:
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737602]:         # This output supports the following modes: 800x480@59.9
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737602]:         #
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737602]:         # Uncomment the following to enforce the selected configuration.
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737602]:         # Or amend as desired.
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737602]:         #
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737602]:         state: enabled  # {enabled, disabled}, defaults to enabled
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737602]:         mode: 800x480@59.9      # Defaults to preferred mode
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737602]:         position: [0, 0]        # Defaults to [0, 0]
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737602]:         orientation: normal     # {normal, left, right, inverted}, defaults to normal
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737602]:         scale: 1
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737602]:         group: 0        # Outputs with the same non-zero value are treated as a single display' ']'
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737602]: + disown
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737640]: + sh -c 'sleep 5; mkdir "/run/user/007"; rmdir "/run/user/007"'
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737602]: + exec nohup /snap/ubuntu-frame/15404/bin/run-frame /snap/ubuntu-frame/15404/bin/graphics-core22-wrapper /snap/ubuntu-frame/15404/usr/local/bin/frame
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737602]: + [ /snap/ubuntu-frame/15404/bin/graphics-core22-wrapper = --help ]
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737642]: + dirname /run/user/0/snap.ubuntu-frame
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737602]: + XDG_RUNTIME_DIR=/run/user/0
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737602]: + export XDG_RUNTIME_DIR
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737602]: + mkdir -p /run/user/0 -m 700
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737602]: + [ -n  ]
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737602]: + exec /snap/ubuntu-frame/15404/bin/graphics-core22-wrapper /snap/ubuntu-frame/15404/usr/local/bin/frame
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737602]: [2026-01-20 05:57:41.939605] < - debug - > miral: Loaded display configuration file: /var/snap/ubuntu-frame/15404/frame.display
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737602]: [2026-01-20 05:57:41.992172] <information> mirserver: Starting
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737602]: [2026-01-20 05:57:41.994163] < - debug - > mirserver: Using Linux VT subsystem for session management
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737602]: [2026-01-20 05:57:41.995877] <information> mircommon: Loading modules from: /snap/ubuntu-frame/15404/usr/lib/aarch64-linux-gnu/mir/server-platform
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737602]: [2026-01-20 05:57:41.997237] <information> mircommon: Loading module: /snap/ubuntu-frame/15404/usr/lib/aarch64-linux-gnu/mir/server-platform/graphics-eglstream-kms.so.22
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737602]: [2026-01-20 05:57:41.998154] <information> mircommon: Loading module: /snap/ubuntu-frame/15404/usr/lib/aarch64-linux-gnu/mir/server-platform/graphics-gbm-kms.so.22
2026-01-20T05:57:41-07:00 ubuntu-frame.daemon[2737602]: [2026-01-20 05:57:41.999140] <information> mircommon: Loading module: /snap/ubuntu-frame/15404/usr/lib/aarch64-linux-gnu/mir/server-platform/renderer-egl-generic.so.22
2026-01-20T05:57:42-07:00 ubuntu-frame.daemon[2737602]: [2026-01-20 05:57:42.000127] <information> mircommon: Loading module: /snap/ubuntu-frame/15404/usr/lib/aarch64-linux-gnu/mir/server-platform/server-x11.so.22
2026-01-20T05:57:42-07:00 ubuntu-frame.daemon[2737602]: [2026-01-20 05:57:42.001000] <information> mircommon: Loading module: /snap/ubuntu-frame/15404/usr/lib/aarch64-linux-gnu/mir/server-platform/input-evdev.so.9
2026-01-20T05:57:42-07:00 ubuntu-frame.daemon[2737602]: [2026-01-20 05:57:42.006869] <information> mirserver: Found display driver: mir:x11 (version 2.17.2)
2026-01-20T05:57:42-07:00 ubuntu-frame.daemon[2737602]: [2026-01-20 05:57:42.008098] <information> mirserver: (Unsupported by system environment)
2026-01-20T05:57:42-07:00 ubuntu-frame.daemon[2737602]: [2026-01-20 05:57:42.009030] <information> mirserver: Found display driver: mir:egl-generic (version 2.17.2)
2026-01-20T05:57:42-07:00 ubuntu-frame.daemon[2737602]: [2026-01-20 05:57:42.010065] <information> mirserver: Found display driver: mir:gbm-kms (version 2.17.2)
2026-01-20T05:57:42-07:00 ubuntu-frame.daemon[2737602]: [2026-01-20 05:57:42.025549] < - debug - > gbm-kms: Quirks: checking device with devnode: /dev/dri/card1, driver vc4-drm
2026-01-20T05:57:42-07:00 ubuntu-frame.daemon[2737602]: [2026-01-20 05:57:42.027339] <information> gbm-kms: Failed to probe DRM device: ./src/server/console/linux_virtual_terminal.cpp(167): Throw in function {anonymous}::DRMDevice::DRMDevice(mir::VTFileOperations&, const char*, std::unique_ptr<mir::Device::Observer>, const std::shared_ptr<mir::LinuxVirtualTerminal::DeviceList>&)
2026-01-20T05:57:42-07:00 ubuntu-frame.daemon[2737602]: Dynamic exception type: boost::wrapexcept<boost::exception_detail::error_info_injector<std::system_error> >
2026-01-20T05:57:42-07:00 ubuntu-frame.daemon[2737602]: std::exception::what: Failed to claim DRM master: Device or resource busy
2026-01-20T05:57:42-07:00 ubuntu-frame.daemon[2737602]: [boost::errinfo_file_name_*] = /dev/dri/card1
2026-01-20T05:57:42-07:00 ubuntu-frame.daemon[2737602]: [2026-01-20 05:57:42.030409] < - debug - > gbm-kms: Quirks: checking device with devnode: (null), driver
2026-01-20T05:57:42-07:00 ubuntu-frame.daemon[2737602]: [2026-01-20 05:57:42.032416] < - debug - > gbm-kms: Quirks: checking device with devnode: (null), driver
2026-01-20T05:57:42-07:00 ubuntu-frame.daemon[2737602]: [2026-01-20 05:57:42.034829] < - debug - > gbm-kms: Quirks: checking device with devnode: (null), driver
2026-01-20T05:57:42-07:00 ubuntu-frame.daemon[2737602]: [2026-01-20 05:57:42.037658] < - debug - > gbm-kms: Quirks: checking device with devnode: (null), driver
2026-01-20T05:57:42-07:00 ubuntu-frame.daemon[2737602]: [2026-01-20 05:57:42.039797] < - debug - > gbm-kms: Quirks: checking device with devnode: /dev/dri/card0, driver v3d
2026-01-20T05:57:42-07:00 ubuntu-frame.daemon[2737602]: Failed to create /root/.cache/mesa_shader_cache for shader cache (Permission denied)---disabling.
2026-01-20T05:57:42-07:00 ubuntu-frame.daemon[2737602]: [2026-01-20 05:57:42.169672] <information> gbm-kms: Failed to probe DRM device: ./src/platforms/common/server/kms-utils/drm_mode_resources.cpp(39): Throw in function mir::graphics::kms::DRMModeResUPtr {anonymous}::resources_for_drm_node(int)
2026-01-20T05:57:42-07:00 ubuntu-frame.daemon[2737602]: Dynamic exception type: boost::wrapexcept<std::system_error>
2026-01-20T05:57:42-07:00 ubuntu-frame.daemon[2737602]: std::exception::what: Couldn't get DRM resources: Operation not supported
2026-01-20T05:57:42-07:00 ubuntu-frame.daemon[2737602]: [2026-01-20 05:57:42.171454] <information> mirserver: Driver supports:
2026-01-20T05:57:42-07:00 ubuntu-frame.daemon[2737602]: [2026-01-20 05:57:42.175310] <information> mirserver:   /devices/platform/v3dbus/fec00000.v3d/drm/card0 (priority 0)
2026-01-20T05:57:42-07:00 ubuntu-frame.daemon[2737602]: [2026-01-20 05:57:42.175548] <information> mirserver: Found display driver: mir:eglstream-kms (version 2.17.2)
2026-01-20T05:57:42-07:00 ubuntu-frame.daemon[2737602]: [2026-01-20 05:57:42.182549] < - debug - > eglstream: Found EGLDeviceEXT with device extensions: EGL_EXT_device_drm EGL_EXT_device_drm_render_node
2026-01-20T05:57:42-07:00 ubuntu-frame.daemon[2737602]: [2026-01-20 05:57:42.184467] < -warning- > eglstream: Failed to check DRM modesetting support for device fec00000.v3d: Invalid argument (22)
2026-01-20T05:57:42-07:00 ubuntu-frame.daemon[2737602]: [2026-01-20 05:57:42.186530] < - debug - > eglstream: Found EGLDeviceEXT with device extensions: EGL_MESA_device_software EGL_EXT_device_drm_render_node
2026-01-20T05:57:42-07:00 ubuntu-frame.daemon[2737602]: [2026-01-20 05:57:42.187437] <information> eglstream: Failed to query DRM node for EGLDevice: Failed to determine DRM device node path from EGLDevice: EGL_BAD_PARAMETER (0x300c)
2026-01-20T05:57:42-07:00 ubuntu-frame.daemon[2737602]: [2026-01-20 05:57:42.188060] <information> mirserver: Driver supports:
2026-01-20T05:57:42-07:00 ubuntu-frame.daemon[2737602]: [2026-01-20 05:57:42.188566] <information> mirserver:   /devices/platform/v3dbus/fec00000.v3d/drm/card0 (priority 0)
2026-01-20T05:57:42-07:00 ubuntu-frame.daemon[2737602]: ERROR: ./src/server/graphics/default_configuration.cpp(198): Throw in function virtual const std::vector<std::shared_ptr<mir::graphics::DisplayPlatform> >& mir::DefaultServerConfiguration::the_display_platforms()
2026-01-20T05:57:42-07:00 ubuntu-frame.daemon[2737602]: Dynamic exception type: boost::wrapexcept<std::runtime_error>
2026-01-20T05:57:42-07:00 ubuntu-frame.daemon[2737602]: std::exception::what: Exception while creating graphics platform
2026-01-20T05:57:42-07:00 ubuntu-frame.daemon[2737602]: ERROR: ./src/server/graphics/platform_probe.cpp(232): Throw in function std::vector<std::pair<mir::graphics::SupportedDevice, std::shared_ptr<mir::SharedLibrary> > > mir::graphics::modules_for_device(const std::function<std::vector<mir::graphics::SupportedDevice>(const mir::SharedLibrary&)>&, const std::vector<std::shared_ptr<mir::SharedLibrary> >&, mir::graphics::TypePreference)
2026-01-20T05:57:42-07:00 ubuntu-frame.daemon[2737602]: Dynamic exception type: boost::wrapexcept<std::runtime_error>
2026-01-20T05:57:42-07:00 ubuntu-frame.daemon[2737602]: std::exception::what: Failed to find any platforms for current system
2026-01-20T05:57:42-07:00 systemd[1]: snap.ubuntu-frame.daemon.service: Main process exited, code=exited, status=1/FAILURE

Again the Failed to claim DRM master shows up. There isn't another process using this resource, maybe something is not being cleaned up fully when ubuntu-frame restarts?

For reference, after I reboot the logs look like this:

2026-01-20T06:10:27-07:00 ubuntu-frame.daemon[6176]: std::exception::what: Couldn't get DRM resources: Operation not supported
2026-01-20T06:10:27-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:27.080181] <information> mirserver: Driver supports:
2026-01-20T06:10:27-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:27.085706] <information> mirserver:      /devices/platform/gpu/drm/card1 (priority 128)
2026-01-20T06:10:27-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:27.086765] <information> mirserver:      /devices/platform/v3dbus/fec00000.v3d/drm/card0 (priority 0)
2026-01-20T06:10:27-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:27.087826] <information> mirserver: Found display driver: mir:eglstream-kms (version 2.17.2)
2026-01-20T06:10:27-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:27.098378] < - debug - > eglstream: Found EGLDeviceEXT with device extensions: EGL_EXT_device_drm
2026-01-20T06:10:27-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:27.101326] < -warning- > eglstream: Failed to check DRM modesetting support for device gpu: Invalid argument (22)
2026-01-20T06:10:27-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:27.125070] < - debug - > eglstream: Found EGLDeviceEXT with device extensions: EGL_MESA_device_software EGL_EXT_device_drm_render_node
2026-01-20T06:10:27-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:27.125442] <information> eglstream: Failed to query DRM node for EGLDevice: Failed to determine DRM device node path from EGLDevice: EGL_BAD_PARAMETER (0x300c)
2026-01-20T06:10:27-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:27.125590] <information> mirserver: Driver supports:
2026-01-20T06:10:27-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:27.125646] <information> mirserver:      /devices/platform/gpu/drm/card1 (priority 0)
2026-01-20T06:10:27-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:27.125781] <information> mirserver: Selected display driver: mir:gbm-kms (version 2.17.2) for device ((null): /dev/dri/card1)
2026-01-20T06:10:27-07:00 ubuntu-frame.daemon[6176]: Failed to create /root/.cache/mesa_shader_cache for shader cache (Permission denied)---disabling.
2026-01-20T06:10:27-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:27.608542] <information> mircommon: Loading modules from: /snap/ubuntu-frame/15404/usr/lib/aarch64-linux-gnu/mir/server-platform
2026-01-20T06:10:27-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:27.608974] <information> mircommon: Loading module: /snap/ubuntu-frame/15404/usr/lib/aarch64-linux-gnu/mir/server-platform/graphics-eglstream-kms.so.22
2026-01-20T06:10:27-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:27.609123] <information> mircommon: Loading module: /snap/ubuntu-frame/15404/usr/lib/aarch64-linux-gnu/mir/server-platform/graphics-gbm-kms.so.22
2026-01-20T06:10:27-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:27.609190] <information> mircommon: Loading module: /snap/ubuntu-frame/15404/usr/lib/aarch64-linux-gnu/mir/server-platform/renderer-egl-generic.so.22
2026-01-20T06:10:27-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:27.609257] <information> mircommon: Loading module: /snap/ubuntu-frame/15404/usr/lib/aarch64-linux-gnu/mir/server-platform/server-x11.so.22
2026-01-20T06:10:27-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:27.609318] <information> mircommon: Loading module: /snap/ubuntu-frame/15404/usr/lib/aarch64-linux-gnu/mir/server-platform/input-evdev.so.9
2026-01-20T06:10:27-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:27.614867] <information> mirserver: Found rendering driver: mir:eglstream-kms (version 2.17.2)
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: Failed to create /root/.cache/mesa_shader_cache for shader cache (Permission denied)---disabling.
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.150135] <information> eglstream: EGLDevice found but unsuitable. Missing extension EGL_KHR_stream_consumer_gltexture
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.153877] <information> eglstream: EGLDevice found but unsuitable. Missing extension EGL_NV_stream_attrib
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.155037] < - debug - > eglstream: Failed to find kernel device for EGLDevice: Failed to determine DRM device node path from EGLDevice: EGL_BAD_PARAMETER (0x300c)
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.155854] < - debug - > eglstream: EGLDeviceEXTs found, but none are suitable for Mir
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.156588] <information> mirserver: Driver supports:
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.157209] <information> mirserver:      /devices/platform/gpu/drm/card1 (priority 0)
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.158001] <information> mirserver: Found rendering driver: mir:gbm-kms (version 2.17.2)
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.158718] < - debug - > gbm-kms: GBM-capable display found
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.170700] < - debug - > gbm-kms: Quirks: checking device with devnode: /dev/dri/card1, driver vc4-drm
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: Failed to create /root/.cache/mesa_shader_cache for shader cache (Permission denied)---disabling.
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.731607] < - debug - > gbm-kms: Quirks: checking device with devnode: (null), driver
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.732505] < - debug - > gbm-kms: Quirks: checking device with devnode: (null), driver
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.734217] < - debug - > gbm-kms: Quirks: checking device with devnode: (null), driver
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.736662] < - debug - > gbm-kms: Quirks: checking device with devnode: (null), driver
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.739121] < - debug - > gbm-kms: Quirks: checking device with devnode: /dev/dri/card0, driver v3d
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.741785] < - debug - > gbm-kms: Quirks: checking device with devnode: /dev/dri/renderD128, driver v3d
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: Failed to create /root/.cache/mesa_shader_cache for shader cache (Permission denied)---disabling.
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.761950] <information> mirserver: Driver supports:
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.763055] <information> mirserver:      /devices/platform/gpu/drm/card1 (priority 256)
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.764423] <information> mirserver:      /devices/platform/v3dbus/fec00000.v3d/drm/renderD128 (priority 256)
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.765475] <information> mirserver: Found rendering driver: mir:egl-generic (version 2.17.2)
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: Failed to create /root/.cache/mesa_shader_cache for shader cache (Permission denied)---disabling.
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.784755] <information> mirserver: Driver supports:
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.785989] <information> mirserver:      System (priority 128)
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.786795] <information> mirserver: Found rendering driver: mir:x11 (version 2.17.2)
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.787799] <information> mirserver: Selected rendering driver: mir:gbm-kms (version 2.17.2) for device ((null): /dev/dri/card1)
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.789276] < - debug - > gbm-kms: Checking whether /dev/dri/card1 is the same device as (/dev/dri/card1, (null))...
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.790214] < - debug - > gbm-kms:        ...yup.
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.841723] <information> mirserver: Selected rendering driver: mir:gbm-kms (version 2.17.2) for device ((null): /dev/dri/renderD128)
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.843129] < - debug - > gbm-kms: Checking whether /dev/dri/renderD128 is the same device as (/dev/dri/card1, (null))...
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.844078] < - debug - > gbm-kms:        ...nope.
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: Failed to create /root/.cache/mesa_shader_cache for shader cache (Permission denied)---disabling.
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.866354] < - debug - > gbm-kms: No EDID data available on connector 46
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.867130] < -warning- > gbm-kms: Unable to determine the current display mode.
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.868570] <information> gbm-kms: DRM device details:
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.869267] <information> gbm-kms: /dev/dri/card1: using driver vc4 [Broadcom VC4 graphics] (version: 0.0.0 driver date: 20140616)
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.870025] <information> gbm-kms:        Output: HDMI-A-1 (disconnected)
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.870655] <information> gbm-kms:        Output: HDMI-A-2 (disconnected)
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.871178] <information> gbm-kms:        Output: DSI-1 (connected)
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.871652] <information> gbm-kms:                Mode: 800×480@59.92
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.872140] < - debug - > miral: Display config using layout: 'default'
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.872796] <information> miral: Display config:
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: 8>< ---------------------------------------------------
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: layouts:
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]:   default:                         # the current layout
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]:     cards:
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]:     # a list of cards (currently matched by card-id)
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]:     - card-id: 0
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]:       HDMI-A-1:
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]:         # (disconnected)
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]:       HDMI-A-2:
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]:         # (disconnected)
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]:       DSI-1:
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]:         # This output supports the following modes: 800x480@59.9
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]:         #
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]:         # Uncomment the following to enforce the selected configuration.
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]:         # Or amend as desired.
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]:         #
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]:         state: enabled     # {enabled, disabled}, defaults to enabled
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]:         mode: 800x480@59.9 # Defaults to preferred mode
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]:         position: [0, 0]   # Defaults to [0, 0]
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]:         orientation: normal        # {normal, left, right, inverted}, defaults to normal
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]:         scale: 1
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]:         group: 0   # Outputs with the same non-zero value are treated as a single display
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: 8>< ---------------------------------------------------
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.880486] < -warning- > gbm-kms: Ignoring attempt to set zero length gamma
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.882081] < - debug - > miral: Display config using layout: 'default'
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.882638] <information> miral: Display config:
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: 8>< ---------------------------------------------------
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: layouts:
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]:   default:                         # the current layout
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]:     cards:
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]:     # a list of cards (currently matched by card-id)
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]:     - card-id: 0
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]:       HDMI-A-1:
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]:         # (disconnected)
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]:       HDMI-A-2:
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]:         # (disconnected)
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]:       DSI-1:
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]:         # This output supports the following modes: 800x480@59.9
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]:         #
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]:         # Uncomment the following to enforce the selected configuration.
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]:         # Or amend as desired.
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]:         #
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]:         state: enabled     # {enabled, disabled}, defaults to enabled
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]:         mode: 800x480@59.9 # Defaults to preferred mode
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]:         position: [0, 0]   # Defaults to [0, 0]
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]:         orientation: normal        # {normal, left, right, inverted}, defaults to normal
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]:         scale: 1
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]:         group: 0   # Outputs with the same non-zero value are treated as a single display
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: 8>< ---------------------------------------------------
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.887222] <information> mirserver: Cursor disabled
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: xkbcommon: ERROR: couldn't find a Compose file for locale "C.UTF-8" (mapped to "C.UTF-8")
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.889451] <information> gbm-kms-buffer-allocator: Enabled linux-dmabuf import support
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.927378] < - ERROR - > mirserver: Unable to watch directory /snap/ubuntu-frame/15404/graphics/usr/share/applications
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.928643] <information> mircommon: Loading modules from: /snap/ubuntu-frame/15404/usr/lib/aarch64-linux-gnu/mir/server-platform
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.929107] <information> mircommon: Loading module: /snap/ubuntu-frame/15404/usr/lib/aarch64-linux-gnu/mir/server-platform/graphics-eglstream-kms.so.22
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.929327] <information> mircommon: Loading module: /snap/ubuntu-frame/15404/usr/lib/aarch64-linux-gnu/mir/server-platform/graphics-gbm-kms.so.22
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.929452] <information> mircommon: Loading module: /snap/ubuntu-frame/15404/usr/lib/aarch64-linux-gnu/mir/server-platform/renderer-egl-generic.so.22
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.929630] <information> mircommon: Loading module: /snap/ubuntu-frame/15404/usr/lib/aarch64-linux-gnu/mir/server-platform/server-x11.so.22
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.929733] <information> mircommon: Loading module: /snap/ubuntu-frame/15404/usr/lib/aarch64-linux-gnu/mir/server-platform/input-evdev.so.9
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.934931] <information> mirserver: Selected input driver: mir:evdev-input (version: 2.17.2)
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.936136] <information> mirserver: Mir version 2.17.2
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.942260] <information> GLRenderer: EGL vendor: Mesa Project
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.942410] <information> GLRenderer: EGL version: 1.4
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.942456] <information> GLRenderer: EGL client APIs: OpenGL OpenGL_ES
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.942502] <information> GLRenderer: EGL extensions: EGL_ANDROID_blob_cache EGL_EXT_buffer_age EGL_EXT_image_dma_buf_import EGL_EXT_image_dma_buf_import_modifiers EGL_KHR_cl_event2 EGL_KHR_config_attribs EGL_KHR_context_flush_control EGL_KHR_create_context EGL_KHR_create_context_no_error EGL_KHR_fence_sync EGL_KHR_get_all_proc_addresses EGL_KHR_gl_colorspace EGL_KHR_gl_renderbuffer_image EGL_KHR_gl_texture_2D_image EGL_KHR_gl_texture_3D_image EGL_KHR_gl_texture_cubemap_image EGL_KHR_image EGL_KHR_image_base EGL_KHR_image_pixmap EGL_KHR_no_config_context EGL_KHR_reusable_sync EGL_KHR_surfaceless_context EGL_EXT_pixel_format_float EGL_KHR_wait_sync EGL_MESA_configless_context EGL_MESA_drm_image EGL_MESA_image_dma_buf_export EGL_MESA_query_driver EGL_WL_bind_wayland_display
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.942551] <information> GLRenderer: GL vendor: Broadcom
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.942607] <information> GLRenderer: GL renderer: V3D 4.2
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.942647] <information> GLRenderer: GL version: OpenGL ES 3.1 Mesa 23.2.1-1ubuntu3.1~22.04.3
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.942683] <information> GLRenderer: GLSL version: OpenGL ES GLSL ES 3.10
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.942856] <information> GLRenderer: GL extensions: GL_EXT_blend_minmax GL_EXT_multi_draw_arrays GL_EXT_texture_filter_anisotropic GL_EXT_texture_compression_s3tc GL_EXT_texture_compression_dxt1 GL_EXT_texture_compression_rgtc GL_EXT_texture_format_BGRA8888 GL_OES_compressed_ETC1_RGB8_texture GL_OES_depth24 GL_OES_element_index_uint GL_OES_fbo_render_mipmap GL_OES_mapbuffer GL_OES_rgb8_rgba8 GL_OES_standard_derivatives GL_OES_stencil8 GL_OES_texture_3D GL_OES_texture_float GL_OES_texture_half_float GL_OES_texture_half_float_linear GL_OES_texture_npot GL_OES_vertex_half_float GL_EXT_draw_instanced GL_EXT_texture_sRGB_decode GL_OES_EGL_image GL_OES_depth_texture GL_AMD_performance_monitor GL_OES_packed_depth_stencil GL_EXT_texture_type_2_10_10_10_REV GL_NV_conditional_render GL_OES_get_program_binary GL_APPLE_texture_max_level GL_EXT_discard_framebuffer GL_EXT_read_format_bgra GL_NV_pack_subimage GL_EXT_frag_depth GL_NV_fbo_color_attachments GL_OES_EGL_image_external GL_OES_EGL_sync GL_OES_vertex_array_object GL_ANGLE_pack_reverse_row_order GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_EXT_occlusion_query_boolean GL_EXT_texture_rg GL_EXT_unpack_subimage GL_NV_draw_buffers GL_NV_read_buffer GL_NV_read_depth GL_NV_read_depth_stencil GL_NV_read_stencil GL_EXT_draw_buffers GL_EXT_instanced_arrays GL_EXT_map_buffer_range GL_KHR_debug GL_KHR_texture_compression_astc_ldr GL_NV_generate_mipmap_sRGB GL_NV_pixel_buffer_object GL_OES_depth_texture_cube_map GL_OES_required_internalformat GL_OES_surfaceless_context GL_EXT_color_buffer_float GL_EXT_debug_label GL_EXT_sRGB_write_control GL_EXT_separate_shader_objects GL_EXT_shader_implicit_conversions GL_EXT_shader_integer_mix GL_EXT_base_instance GL_EXT_compressed_ETC1_RGB8_sub_texture GL_EXT_copy_image GL_EXT_draw_buffers_indexed GL_EXT_draw_elements_base_vertex GL_EXT_polygon_offset_clamp GL_EXT_primitive_bounding_box GL_EXT_shader_io_blocks GL_EXT_texture_border_clamp GL_EXT_texture_cube_map_array GL_EXT_texture_view GL_KHR_context_flush_control GL_NV_image_formats GL_NV_shader_noperspective_interpolation GL_OES_copy_image GL_OES_draw_buffers_indexed GL_OES_draw_elements_base_vertex GL_OES_primitive_bounding_box GL_OES_shader_io_blocks GL_OES_texture_border_clamp GL_OES_texture_cube_map_array GL_OES_texture_stencil8 GL_OES_texture_storage_multisample_2d_array GL_OES_texture_view GL_EXT_buffer_storage GL_EXT_float_blend GL_EXT_geometry_point_size GL_EXT_geometry_shader GL_KHR_no_error GL_KHR_texture_compression_astc_sliced_3d GL_OES_EGL_image_external_essl3 GL_OES_geometry_point_size GL_OES_geometry_shader GL_OES_shader_image_atomic GL_EXT_clear_texture GL_EXT_texture_compression_s3tc_srgb GL_MESA_shader_integer_functions GL_EXT_texture_mirror_clamp_to_edge GL_KHR_parallel_shader_compile GL_EXT_EGL_image_storage GL_MESA_framebuffer_flip_y GL_EXT_texture_query_lod GL_MESA_bgra
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.942934] <information> GLRenderer: GL max texture size = 4096
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.944357] <information> GLRenderer: GL framebuffer bits: RGBA=8880, depth=0, stencil=0
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.969567] <information> mirserver: Initial display configuration:
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.969699] <information> mirserver: * Output 1: HDMI-A disconnected
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.969743] <information> mirserver: * Output 2: HDMI-A disconnected
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.969779] <information> mirserver: * Output 3: DSI connected, used
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.969824] <information> mirserver: . |_ Physical size 6.9" 154x86mm
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.969860] <information> mirserver: . |_ Power is on
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.969904] <information> mirserver: . |_ Current mode 800x480 59.92Hz
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.969946] <information> mirserver: . |_ Preferred mode 800x480 59.92Hz
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.969981] <information> mirserver: . |_ Orientation normal
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.970024] <information> mirserver: . |_ Logical size 800x480
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.970064] <information> mirserver: . |_ Logical position +0+0
2026-01-20T06:10:28-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:28.970104] <information> mirserver: . |_ Scaling factor: 1.00
2026-01-20T06:10:30-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:30.272739] <information> frame: New surface for snap="my-snap" with title="Flutter Demo"
2026-01-20T06:10:31-07:00 ubuntu-frame.daemon[6176]: [2026-01-20 06:10:31.784381] < -warning- > mirserver: Ignoring layer shell protocol violation: wl_surface destroyed before associated zwlr_layer_surface_v1@28

[Saviq]

@Sponge-Bas so it works after a reboot, but stops after some time, or?

The "after reboot" log is actually cut off just below where it was interesting - look for what happens after:

gbm-kms: Quirks: checking device with devnode: /dev/dri/card1, driver vc4-drm

That's the device you need to have working.

maybe something is not being cleaned up fully when ubuntu-frame restarts?

That's not unheard of, but would be a driver issue, potentially. If the process is gone…

[Sponge-Bas]

After the reboot it works for a while. Then after a couple hours/days (I'm not sure exactly) the screen freezes, when I restart the ubuntu-frame I get the errors shown.

I attached a longer ubuntu-frame log from after the reboot.

uf-log.txt

[Saviq]

Then after a couple hours/days (I'm not sure exactly) the screen freezes

That would be the thing to look at. All this suggests that there's some resource that is starved, and indeed something is not cleaned up properly - so Frame can't start again.

Would be good if you would inspect the device when it freezes - are there any relevant logs in the journal or dmesg? What's the resource usage at the time?

[Sponge-Bas]

dmesg only highlights the 2026-01-21T08:35:57-07:00 ubuntu-frame.daemon[889391]: Failed to create /root/.cache/mesa_shader_cache for shader cache (Permission denied)---disabling. message, which I don't think is an issue because I see that on other systems too.

This message is interesting:

2026-01-21T08:36:59-07:00 ubuntu-frame.daemon[894570]: std::exception::what: Failed to claim DRM master: Device or resource busy
2026-01-21T08:36:59-07:00 ubuntu-frame.daemon[894570]: [boost::errinfo_file_name_*] = /dev/dri/card1

lsof /dev/dri/card1 initially showed that there were indeed 2 processes using this file, both from the "Flutter Demo" service. I killed that process, but ubuntu-frame kept saying that the device was busy even after that process was gone.

I tried restarting my-snap, ubuntu-frame, and ubuntu-frame-osk to no avail. A reboot again did fix it.

I attached the full ubuntu-frame log below. Unfortunately I don't have logs from when it actually stopped worked, these logs only start after the initial snap restart ubuntu-frame call.

uf_error_2.txt

[Saviq]

@Sponge-Bas unfortunately this doesn't shed much light… yes, the "Failed to claim DRM master" is the reason why things can't start again, but the real problem lies before - where things get stuck, supposedly from some resource starvation - and don't properly clean up.