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xapp_kbd_layout_controller_get_current_group assertion fails

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
35/100
Issue type
Bug
Clarity
Needs clarification
Activity status
Stale
Tech stack
arch-linux, c, javascript, linux
Domain
desktop, operating-systems

Research direction

Start by tracing xapp_kbd_layout_controller_get_current_group and the keyboard applet's _syncGroup calls in applet.js:265-269, using the reported .xsession-error output as the reproduction context. Determine why the controller becomes disabled and verify that the applet and layout-switching shortcut remain usable without assertion or undefined-item errors.

Written by the indexing model from the issue text.

Description

Hi there,

at a seemingly random point during the Cinnamon session the keyboard layout applet disappears and cannot be loaded anymore. The keyboard shortcut to switch between layouts stops working too.
I think this is due to something going wrong in xapp-kbd-layout-controller.
Here's some suspicious error log in .xsession-error:

Cjs-Message: 19:13:16.380: JS LOG: Unknown network device type, is 14
Cjs-Message: 19:13:16.392: JS LOG: Unknown network device type, is 13
Cjs-Message: 19:13:16.392: JS LOG: Unknown network device type, is 13
Cinnamon warning: Log level 8: xapp_kbd_layout_controller_get_current_group: assertion 'controller->priv->enabled' failed

(cinnamon:1043): Cjs-WARNING **: 19:13:45.953: JS ERROR: TypeError: item is undefined
_syncGroup@/usr/share/cinnamon/applets/keyboard@cinnamon.org/applet.js:265:9

Cinnamon warning: Log level 8: xapp_kbd_layout_controller_get_current_group: assertion 'controller->priv->enabled' failed

(cinnamon:1043): Cjs-WARNING **: 19:13:45.954: JS ERROR: TypeError: item is undefined
_syncGroup@/usr/share/cinnamon/applets/keyboard@cinnamon.org/applet.js:265:9

Cinnamon warning: Log level 8: xapp_kbd_layout_controller_get_current_group: assertion 'controller->priv->enabled' failed

(cinnamon:1043): Cjs-WARNING **: 19:13:45.954: JS ERROR: TypeError: item is undefined
_syncGroup@/usr/share/cinnamon/applets/keyboard@cinnamon.org/applet.js:265:9

Cinnamon warning: Log level 8: xapp_kbd_layout_controller_get_current_group: assertion 'controller->priv->enabled' failed

(cinnamon:1043): Cjs-WARNING **: 19:13:45.954: JS ERROR: TypeError: item is undefined
_syncGroup@/usr/share/cinnamon/applets/keyboard@cinnamon.org/applet.js:269:9

Cinnamon warning: Log level 8: xapp_kbd_layout_controller_get_current_group: assertion 'controller->priv->enabled' failed

(cinnamon:1043): Cjs-WARNING **: 19:13:45.954: JS ERROR: TypeError: item is undefined
_syncGroup@/usr/share/cinnamon/applets/keyboard@cinnamon.org/applet.js:269:9


(cinnamon:1043): Cjs-CRITICAL **: 19:13:47.841: JS ERROR: SyntaxError: unterminated character class @ /usr/share/cinnamon/js/misc/fileUtils.js line 210 > Function:3251

The main culprit being xapp_kbd_layout_controller_get_current_group: assertion 'controller->priv->enabled' failed. Why did that assertion fail? What can be done about it?

My configuration:

  • Linux 4.18.7-zen1-1-zen
  • Arch Linux (current, except kernel and graphic card drivers)
  • Cinnamon 4.0.8
Dominant language
C
Stars
167
Forks
49
Avg merge
5d 15h
Merged PRs (30d)
2

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