https://bugs.kde.org/show_bug.cgi?id=485429
Bug ID: 485429
Summary: kwin to use %100 CPU on Wayland when nouveau.noaccel=1
Classification: Plasma
Product: kwin
Version: 6.0.3
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: kwin-bugs-n...@kde.org
Reporter: erdem...@gmail.com
Target Milestone: ---
Created attachment 168416
--> https://bugs.kde.org/attachment.cgi?id=168416&action=edit
no nouveau and intel xf86-video drivers installed
SUMMARY
kwin is using all CPU resources on Wayland session while using
nouveau.noaccel=1
STEPS TO REPRODUCE
1. add nouveau.noaccel=1 to your kernel parameters, regenerate
2. reboot and login with a wayland session
OBSERVED RESULT
it's even hard to move your cursor, CPU usage is %100
EXPECTED RESULT
acceptable average kwin CPU usage
SOFTWARE/OS VERSIONS
System:
Host: arch Kernel: 6.8.4-zen1-1-zen arch: x86_64 bits: 64
Desktop: KDE Plasma v: 6.0.3 Distro: Arch Linux
Graphics:
Device-1: NVIDIA GT216M [GeForce GT 320M] driver: nouveau v: kernel
Device-2: Bison HP Webcam driver: uvcvideo type: USB
Display: server: X.Org v: 21.1.12 with: Xwayland v: 23.2.6 driver: X:
loaded: modesetting unloaded: fbdev,vesa gpu: nouveau s-res: 1366x768
resolution: 1366x768
API: EGL v: 1.5 drivers: kms_swrast,swrast
platforms: gbm,x11,surfaceless,device
API: OpenGL v: 4.5 vendor: mesa v: 24.0.5-arch1.1 renderer: llvmpipe
(LLVM 17.0.6 128 bits)
API: Vulkan Message: No Vulkan data available.
KDE Plasma Version: 6.0.3
KDE Frameworks Version: 6.0.0
Qt Version: 6.7.0
ADDITIONAL INFORMATION
Using nouveau.noaccel=1 because i am having random kernel lockups:
https://fedoraproject.org/wiki/Common_kernel_problems#Systems_with_nVidia_adapters_using_the_nouveau_driver_lock_up_randomly
Using modesetting driver because of "purple note" sections with explanation
links:
https://wiki.archlinux.org/title/Nouveau
But i also installed both xf86-video-nouveau and intel packages to see if
anything changes, no difference at all about CPU usage. I am attaching
journalctl logs and screenshot of CPU usage.
--
You are receiving this mail because:
You are watching all bug changes.
