SUMMARY When the screen is locked, kscreenlocker_greeter segfaults whenever I undock/dock my laptop due to the monitor switch. STEPS TO REPRODUCE 0. Configure dockd to disable the laptop screen and enable the monitor screen when you dock the laptop. 0. Configure dockd to disable the monitor screen and enable the laptop screen when you undock the laptop. 1. Dock your laptop 2. Lock your screen 3. Undock the laptop 4. Screen is unlocked kscreenlocker_greeter doesn't crash if I configure dockd to don't disable the laptop screen ever. I cannot reproduce the crash by using i3lock. OBSERVED RESULT $ dmesg kscreenlocker_g[48914]: segfault at 31 ip 00007f5e3e5f5954 sp 00007ffd3a99d958 error 4 in libQt5Qml.so.5.13.2[7f5e3e3fb000+33c000] EXPECTED RESULT kscreenlocker_greeter locks the other monitor without crashing. SOFTWARE/OS VERSIONS Linux/KDE Plasma: 5.17.3 (available in About System) KDE Plasma Version: 5.17.3 KDE Frameworks Version: 5.64.0 Qt Version: 5.13.2 ADDITIONAL INFORMATION
Created attachment 124129 [details] backtrace Backtrace.
Are you in a position to compile your own kscreenlocker? If so can you add a return at the top of SecComp::init and see if it still happens?
(In reply to David Edmundson from comment #2) > If so can you add a return at the top of SecComp::init and see if it still > happens? It crashed the same way.
A lot of multi-screen stuff has changed since this bug report was filed. Can you update to Plasma 5.22 and see if it still happens?
Dear Bug Submitter, This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information as soon as possible and set the bug status as REPORTED. Due to regular bug tracker maintenance, if the bug is still in NEEDSINFO status with no change in 30 days the bug will be closed as RESOLVED > WORKSFORME due to lack of needed information. For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging If you have already provided the requested information, please mark the bug as REPORTED so that the KDE team knows that the bug is ready to be confirmed. Thank you for helping us make KDE software even better for everyone!
This bug has been in NEEDSINFO status with no change for at least 30 days. The bug is now closed as RESOLVED > WORKSFORME due to lack of needed information. For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging Thank you for helping us make KDE software even better for everyone!