https://bugs.kde.org/show_bug.cgi?id=410701
Bug ID: 410701
Summary: kglobalaccel5 takes all CPU when plugging USB keyboard
Product: frameworks-kglobalaccel
Version: unspecified
Platform: Archlinux Packages
OS: Linux
Status: REPORTED
Severity: crash
Priority: NOR
Component: general
Assignee: kdelibs-b...@kde.org
Reporter: malte+...@tnxip.de
Target Milestone: ---
The desktop stops responding to all keyboard input after plugging in USB input
devices. I can reproduce this using the Raspberry Pi Keyboard and a Sennheiser
USB headset. I've been seeing this behavior for quite some time on multiple
systems since KDE ~5.14 on Debian testing, unstable and also on Arch Linux.
STEPS TO REPRODUCE
1. Plug in USB headset or similar
OBSERVED RESULT
- Screen freezes for some seconds (kwin_x11's compositor?)
- Sometimes no keyboard input is possible for dozens of seconds
- Always global shortcuts stop working for dozens of seconds
- Checking with (h)top shows high cpu usage by kglobalaccel5 and Xorg
- Killing and restarting kglobalaccel5 restores functionality immediately
There is nothing suspicious in xsession-errors or Xorg.log.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Arch Linux (2019-08-07)
(available in About System)
KDE Plasma Version: 5.16.4
KDE Frameworks Version: 5.60.0
Qt Version: 5.13.0
ADDITIONAL INFORMATION
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