Bug 255779 - Present windows slows desktop down
Summary: Present windows slows desktop down
Status: RESOLVED DUPLICATE of bug 243181
Alias: None
Product: kwin
Classification: Plasma
Component: compositing (show other bugs)
Version: unspecified
Platform: Ubuntu Linux
: NOR normal
Target Milestone: ---
Assignee: KWin default assignee
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2010-11-01 01:34 UTC by Ralph Müller-Welt
Modified: 2010-11-02 14:13 UTC (History)
0 users

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Description Ralph Müller-Welt 2010-11-01 01:34:57 UTC 
Version:           unspecified (using KDE 4.5.2) 
OS:                Linux

Distro: Kubuntu 10.10
KDE: 4.5.2
GFX: GeForce FX 5700/AGP/SSE2
Driver: NVIDIA 173.14.28

Issue:
When using present windows (CTRL+F10) i get no preview windows, only window names. After present windows Desktop is extremely slow!
Other effects (still) work fine (desktop cube, Desktop grid, etc).

Work around:
Don't use present windows ;-(
Or if system is already slow, toggle desktop effects off and on again.

History:
I never had anything like that before!
Issue appeared after upgrade kubuntu 10.04 -> 10.10 with nouveau (no 3d) -> NV 173.14.28.



Reproducible: Always
Comment 1 Thomas Lübking 2010-11-01 16:15:51 UTC 
see the dupe. you'll have to append the output of 

   echo "NVIDIA=`glxinfo | grep 'OpenGL renderer string' | sed -e 's/^.*: //'`:-:`glxinfo | grep 'OpenGL version string' | sed -e 's/^.*: //'`"

to the  [Blacklist][Lanczos] section of your ~/.kde/share/config/kwinrc

*** This bug has been marked as a duplicate of bug 243181 ***
Comment 2 Ralph Müller-Welt 2010-11-02 14:13:26 UTC 
THX,
adding 

NVIDIA=GeForce FX 5700/AGP/SSE2:-:2.1.2 NVIDIA 173.14.28

to [Blacklist][Lanczos] section of ~/.kde/share/config/kwinrc

Solved the issue.