Created attachment 168172 [details] qdbus-qt5 org.kde.KWin /KWin supportInformation SUMMARY High cpu usage of kscreenlocker_greet and plasmashell processes after switching users. Originally reported via https://bugs.kde.org/show_bug.cgi?id=347772#c75, created a new issue as requested by Nate in https://bugs.kde.org/show_bug.cgi?id=347772#c77. Reproducible: Always. Started to happen after replacing the old AMD video card with the NVIDIA video card. Steps to reproduce: 1. Login as user1 2. Switch user to user2 3. Observe kscreenlocker_greet and plasmashell processes running as user1 begin to consume 100% CPU. 4. Log off user2 and log back in as user1. 5. High CPU usage disappears. The workaround from https://bugs.kde.org/show_bug.cgi?id=347772#c22 does not help. Output of "qdbus-qt5 org.kde.KWin /KWin supportInformation" is attached. SOFTWARE/OS VERSIONS Operating System: openSUSE Leap 15.5 KDE Plasma Version: 5.27.11 KDE Frameworks Version: 5.115.0 Qt Version: 5.15.12 Kernel Version: 5.14.21-150500.55.52-default (64-bit) Graphics Platform: X11 Graphics Processor: NVIDIA GeForce RTX 4060 Ti/PCIe/SSE2 Nvidia drivers: nvidia-video-G06-550.67-lp155.20.1.x86_64)
Output of the following is attached. perf record -p $(pidof plasmashell) -e cpu-cycles --call-graph fp perf report > perf.report
Created attachment 168173 [details] perf report for the plasmashell process with high CPU usage