I use USB switch and often switch my mouse/keyboard between my KDE desktop and my work PC. Upon returning to my desktop I'm greeted with screenlocker but my keyboard does not seem to be working. I can move my mouse around but cannot type any password as the password prompt does not appear. ALT+CTRL+Fx doesn't work either. The only way to resolve it is hard reset. Importantly, this only happens when I run plasma on Wayland session. This behaviour is not present with plasma on X11. Based on my limited knowledge I cannot say if the kscreenlocker is responsible here or there's an underlying problem somewhere else in wider input handling under wayland. STEPS TO REPRODUCE 1. Login to desktop session (plasma on Wayland) 2. disconnect USB keyboard/mouse 3. leave for ~30min (not sure about the exact time required) 4. re-connect the keyboard/mouse OBSERVED RESULT No keyboard events are processed. Unable to unlock the screen EXPECTED RESULT Keyboard events are processed and screen can be unlocked SOFTWARE/OS VERSIONS Linux/KDE Plasma: 5.23.3 from Fedora 35 repos. This has been observed for a very long time so it's not a new regression. (available in About System) KDE Plasma Version: 5.23.3 KDE Frameworks Version: 5.89.0 Qt Version: 5.15.2 ADDITIONAL INFORMATION As mentioned before, this only happens on Wayland and not on X11
Moving to KWin, although realistically this is possibly a problem with linux input handling. Do you remember if you had upgraded your kernel and didn't reboot? it could be that the kernel module got unloaded and wasn't found again. Can you still reproduce the problem?
marking as needsinfo
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!