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[Bug 617737] [NEW] Slow desktop effects (KDE 4.5)

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From: Launchpad Bug Tracker <617737@xxxxxxxxxxxxxxxxxx>
Date: Fri, 03 Sep 2010 11:12:27 -0000
Reply-to: Bug 617737 <617737@xxxxxxxxxxxxxxxxxx>
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Binary package hint: kde-window-manager

When turning on desktop effects under KDE 4.5, they are terribly slow. glxgears performance drops down from about 3000 fps to 800 fps.
I'm using a Lenovo T400s with Intel graphics, Ubuntu 10.04 with KDE 4.5 backports. Same problem occurs with Kubuntu 10.10 alpha 3. 
The problem does not occur with desktop effects under Gnome, glxgears stays hight.

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: kwin (not installed)
Uname: Linux 2.6.34-020634-generic x86_64
Architecture: amd64
Date: Sat Aug 14 09:47:35 2010
InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Release Candidate amd64 (20100419.1)
ProcEnviron:
 LANGUAGE=
 LANG=de_CH.utf8
 SHELL=/bin/bash
SourcePackage: kdebase-workspace

** Affects: xserver-xorg-video-intel (Ubuntu)
     Importance: Undecided
         Status: Confirmed


** Tags: amd64 apport-bug lucid
-- 
Slow desktop effects (KDE 4.5)
https://bugs.launchpad.net/bugs/617737
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