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Old 04-20-11, 07:54 AM   #1
dront78
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Join Date: Nov 2007
Location: Moscow
Posts: 11
Default Firefox + Launchpad = Slow compiz

With page https://bugs.launchpad.net/ubuntu/+s...dm/+bug/247910 opened and active in Firefox Tab
Compiz semitransperent effects (window minimize for exaple) slowdown as ~2-3 fps with _any_ opened program
Switching to another tab, changing focus or close problematic page fixes the problem

ArchLinux 2.6.38.3
Linux 2.6.38-ARCH #1 SMP PREEMPT Sun Apr 17 15:18:58 CEST 2011 x86_64 Intel(R) Core(TM)2 Quad CPU Q8300 @ 2.50GHz GenuineIntel GNU/Linux

nVidia 270.41.03 drivers
compiz 0.8.6
firefox 4.0
cpu usage ~2-4% with active problematic tab
cpu usage ~20% with another tab active and problematic opened on inactive page

any help wanted!
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Old 04-20-11, 11:42 AM   #2
oyvind
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Default Re: Firefox + Launchpad = Slow compiz

Related to this:
http://www.nvnews.net/vbulletin/showthread.php?t=152295

Firefox rendering problem which hogs Xorg because of software fallback rendering. This in turn makes Compiz effects slow if Firefox window is visible. I've observed this many times.
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