| Summary: | The CPU consumption of the `plasmashell` and `kwin_wayland` processes become stuck when switching through Virtual Desktops | ||
|---|---|---|---|
| Product: | [Plasma] plasmashell | Reporter: | Martin C. <martincigorraga> |
| Component: | Panel | Assignee: | Plasma Bugs List <plasma-bugs> |
| Status: | RESOLVED DUPLICATE | ||
| Severity: | grave | CC: | niccolo.venerandi, rpbikker |
| Priority: | NOR | ||
| Version First Reported In: | 6.0.5 | ||
| Target Milestone: | 1.0 | ||
| Platform: | NixOS | ||
| OS: | Linux | ||
| Latest Commit: | Version Fixed In: | ||
| Sentry Crash Report: | |||
| Attachments: | Top showing the processes steady high CPU consumption | ||
Dang! With the "Dodge Windows" feature enabled, I found that the same thing happens when the panel is hidden and I switch virtual desktops. Something odd, though, is that when I launch Spectacle to take a screenshot of the processes' CPU consumption, it immediately drops to the expected levels. Temporarily removing the pager from the panel helps as a workaround, but there are other ways to trigger this bug. Maybe you can help find them all. *** This bug has been marked as a duplicate of bug 487895 *** Hi Reiner, that's good to know. I will remove the pager then and see if the issue surfaces again. Since you marked this bug as a duplicate, should I close it to reduce noise and continue the conversation at https://bugs.kde.org/show_bug.cgi?id=487895? It's best to continue the conversation in the other thread, but I will leave to one of the devs to close this one. |
Created attachment 171095 [details] Top showing the processes steady high CPU consumption SUMMARY When the main panel is hidden using the Auto-hide feature, and I switch through virtual desktops, the `plasmashell` and `kwin_wayland` processes become stuck, consuming a considerable amount of CPU cycles; please check the attached screenshot. STEPS TO REPRODUCE 1. Set the default panel to auto-hide 2. Switch to a different virtual desktop 3. Open the wonderful Konsole or Yakuake terminal emulators and check the mentioned processes' CPU consumption, i.e., with `top` OBSERVED RESULT There is an (expected?) spike in the CPU consumption when switching to another virtual desktop; however, the high consumption gets stuck instead of eventually going down EXPECTED RESULT The CPU usage spike goes down moments after switching to another virtual desktop SOFTWARE/OS VERSIONS Windows: macOS: Linux/KDE Plasma: NixOS and openSUSE Tumbleweed (available in About System) KDE Plasma Version: 6.0.5 on Wayland KDE Frameworks Version: 6.2.0 Qt Version: 6.7.1 ADDITIONAL INFORMATION - GPU: Intel TigerLake-LP GT2 [Iris Xe Graphics] - Driver: i915 - I can reproduce this issue on a live openSUSE Tumbleweed session - I can't reproduce the issue with the 'Dodge Windows' setting enabled HTH!