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. Unplug keyboard and mouse 2. Plug in keyboard and mouse; start timer 3. Observe that keyboard and mouse are unusable until 45 seconds pass 4. Keyboard and mouse work OBSERVED RESULT Keyboard and mouse are unusable for 45 seconds after hotplugging (this includes at login if using a USB switcher). After 45 seconds, keyboard and mouse are usable. EXPECTED RESULT Mouse and keyboard are usable immediately/shortly after hotplugging. SOFTWARE/OS VERSIONS Operating System: EndeavourOS KDE Plasma Version: 5.26.5 KDE Frameworks Version: 5.101.0 Qt Version: 5.15.8 Kernel Version: 6.1.3-arch1-1 (64-bit) Graphics Platform: X11 ADDITIONAL INFORMATION I ran into a similar issue like this due to https://bugs.kde.org/show_bug.cgi?id=435113. However, mouse settings are not reset after the hotplugging now; there's just a 45-second delay.
After further testing, this appears to be caused due to me using a USB switcher (specifically I'm using https://www.amazon.com/gp/product/B082K87B87). What I've tried: 1. [ ] Hotplugging the mouse to the USB switcher doesn't cause any delay 2. [ ] Hotplugging the mouse directly to the PC doesn't cause any delay 3. [x] Hotplugging the USB switcher to the PC causes 45 second delay 4. [x] Hitting the switch button on USB switcher and then switching back causes 45 second delay Note that the USB switcher itself isn't broken. This same USB switcher works fine with my macOS and Windows computers---no delay.
Because you're on X11, input isn't going through KWin but rather the input drives for the X11 server. Can you try on Wayland to see if it still happens? Thanks!
(In reply to Nate Graham from comment #2) > Because you're on X11, input isn't going through KWin but rather the input > drives for the X11 server. Can you try on Wayland to see if it still > happens? Thanks! Confirmed that it still happens when using Wayland. Operating System: EndeavourOS KDE Plasma Version: 5.26.5 KDE Frameworks Version: 5.101.0 Qt Version: 5.15.8 Kernel Version: 6.1.4-arch1-1 (64-bit) Graphics Platform: Wayland
After an update and restart yesterday/today, the issue has gone away. I'm not sure what the root cause was, but resolving anyways.