Terrible preformance after upgrade

[Nayar]

In Desktop Effects | Advanced, what do you have for Compsiting type and Qt graphics system?

OpenGL, Raster

[SteveRiley]

OpenGL, Raster

I suspect your issue is the same as what I described in post #10. Try changing to Xrender and Native, that might help. Alternately, if you're comfortable with experimentation, you might try what's mentioned in the KDE mail list thread I referenced -- downgrade to an earlier version of Mesa. I haven't tried this myself, so I can't offer any hints as to how easy or difficult this might be.

[Nayar]

I suspect your issue is the same as what I described in post #10. Try changing to Xrender and Native, that might help. Alternately, if you're comfortable with experimentation, you might try what's mentioned in the KDE mail list thread I referenced -- downgrade to an earlier version of Mesa. I haven't tried this myself, so I can't offer any hints as to how easy or difficult this might be.

Tried the combinations. No good .

Dunno how to downgrade mesa. Any guides to follow?

[SteveRiley]

It appears downgrading to Mesa 8 is probably not possible in Kubuntu 12.10.

I'm curious which KWin you're using; most of these reports have to do with Kwin in GLES mode. Please show the output of

dpkg -l | awk '/kde-window/ {print $1,$2,$3}'

[Nayar]

ii kde-window-manager 4:4.9.2-0ubuntu2.1
ii kde-window-manager-common 4:4.9.2-0ubuntu2.1

[SteveRiley]

Ah, you're using the GLX build of KWin. This is the default for most installs, actually. All I can advise at this point is to wait: the Kubuntu folks who package KWin are working through several patches to try to solve this problem.