Public bug reported:
System specs:
Dell Latitude D620
Intel(R) Core(TM)2 CPU T5600 @ 1.83GHz
1GB mem
00:02.0 VGA compatible controller: Intel Corporation Mobile 945GM/GMS,
943/940GML Express Integrated Graphics Controller (rev 03)
Kubuntu 7.10
xorg 7.2-5ubuntu13
KDE 4.0.1 with composite effects enabled
xorg uses i810 driver
Mostly seen under heavy system load, 15+ programs running
When using alt-tab, sometimes the xorg cpu usage sky-rockets to well
over 95% and stays there for some 5 minutes.. After that, cpu usage
returns to normal. Pressing alt-tab again will cause same problem..
I have encountered this problem some 5 times in the 3 weeks I have been
using kde4
** Affects: ubuntu
Importance: Undecided
Status: New
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Sometimes, using alt-tab in kde4 makes xorg use over 90% CPU for 5 minutes
https://bugs.launchpad.net/bugs/198524
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