https://bugs.kde.org/show_bug.cgi?id=447426
Bug ID: 447426
Summary: Unable to unlock screen after USB keyboard was
disconnected and re-connected
Product: kscreenlocker
Version: 5.23.3
Platform: Fedora RPMs
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: plasma-b...@kde.org
Reporter: r...@sandersmail.eu
CC: bhus...@gmail.com
Target Milestone: ---
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
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