https://bugs.kde.org/show_bug.cgi?id=480812
Bug ID: 480812
Summary: kwin wayland intermitently crashes when locking the
screen
Classification: Plasma
Product: kwin
Version: 5.93.0
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: crash
Priority: NOR
Component: wayland-generic
Assignee: kwin-bugs-n...@kde.org
Reporter: gtp...@proton.me
Target Milestone: ---
SUMMARY
***
NOTE: If you are reporting a crash, please try to attach a backtrace with debug
symbols.
See
https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports
***
STEPS TO REPRODUCE
1. Use plasma
2. Hit Meta+L
3. Screen goes blank only showing the mouse, unable to log into GUI again
OBSERVED RESULT
Sometimes when manually locking the screen, instead of showing the lock screen,
the entire GUI crashes. These are the relevant logs from when the crash
happened and I could precise the time to grep them:
Feb 03 19:31:47 arch plasmashell[4618]:
file:///usr/share/plasma/shells/org.kde.plasma.desktop/contents/views/Desktop.qml:306:
TypeError: Cannot read property 'width' of null
Feb 03 19:31:47 arch plasmashell[4618]:
file:///usr/share/plasma/plasmoids/org.kde.plasma.notifications/contents/ui/global/Globals.qml:136:
TypeError: Cannot read property 'screenGeometry' of null
Feb 03 19:31:47 arch plasmashell[4618]:
file:///usr/share/plasma/plasmoids/org.kde.plasma.notifications/contents/ui/global/Globals.qml:250:
TypeError: Cannot read property 'plasmoid' of undefined
Feb 03 19:31:48 arch systemd[4431]: plasma-plasmashell.service: Consumed 8.583s
CPU time.
Feb 03 19:31:48 arch systemd[4431]: Started
dbus-:1.4-org.kde.KSplash@1.service.
Feb 03 19:32:33 arch systemd[4431]: Starting KRunner...
Feb 03 19:32:33 arch systemd[4431]: Started KRunner.
Feb 03 19:32:33 arch krunner[7373]: QObject::startTimer: Timers cannot be
started from another thread
Feb 03 19:32:34 arch krunner[7373]: qt.qpa.wayland.textinput: virtual void
QtWaylandClient::QWaylandTextInputv3::zwp_text_input_v3_leave(wl_surface*) Got
leave event for surface 0x0 focused surface 0x58d42c0885e0
Feb 03 19:32:36 arch kwin_wayland[4496]: kwin_core: Cannot grant a token to
KWin::ClientConnection(0x5cdc1b552f20)
Feb 03 19:32:41 arch kwin_wayland[4496]: QProcess::start: Process is already
running
Feb 03 19:32:47 arch systemd[1]: Created slice Slice /system/getty.
Feb 03 19:32:47 arch systemd[1]: Started Getty on tty2.
EXPECTED RESULT
Lockscreen should work as usual
SOFTWARE/OS VERSIONS
Linux/KDE Plasma:
6.7.3-zen-1-1-zen
(available in About System)
KDE Plasma Version: 5.93.0
KDE Frameworks Version: 5.249.0
Qt Version: 6.7.0
ADDITIONAL INFORMATION
Some time before the crash there is also some PAM errors:
Feb 03 19:31:12 arch kscreenlocker_greet[6899]: PAM unable to
dlopen(/usr/lib/security/pam_pkcs11.so): /usr/lib/security/pam_pkcs11.so:
cannot open shared object file: No such file or directory
Feb 03 19:31:12 arch kscreenlocker_greet[6899]: PAM adding faulty module:
/usr/lib/security/pam_pkcs11.so
Feb 03 19:31:12 arch kscreenlocker_greet[6899]: PAM unable to
dlopen(/usr/lib/security/pam_fprintd.so): /usr/lib/security/pam_fprintd.so:
cannot open shared object file: No such file or directory
Feb 03 19:31:12 arch kscreenlocker_greet[6899]: PAM adding faulty module:
/usr/lib/security/pam_fprintd.so
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