337.19 low fps in kwin (KDE)


Since 337.19, kwin, the compositing window manager of KDE runs very choppy (like 3 or 5 fps) with almost all desktop effects, like cibe switching or window presentation.

If I install 337.12 on the same machine, kwin runs smoothly with almost constant 60 fps. Games seem not to be affected. Anybody experiencing some similar?


Could you please provide a little more detail on your setup? An nvidia-bug-report.log file (run nvidia-bug-report.sh as root, to generate nvidia-bug-report.log.gz in the current directory) will capture information about your system so that we can try to recreate your configuration more closely.

I just gave this a try on Kubuntu 12.04 with a Kepler GPU and 337.19, and kwin desktop effects seem smooth to me.