[Bug 99457] Excessive CPU load by the xorg-server and GUI's hard lags

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=99457

--- Comment #5 from Michel Dänzer <michel at daenzer.net> ---
The older combo failed to initialize glamor, so it was using shadowfb software
rendering. You can try either

 Option "ShadowPrimary"

or

 Option "Accel" "off"

in /etc/X11/xorg.conf Section "Device" to see if one of them works better. The
former also uses software rendering for 2D but allows 3D and video hardware
acceleration.

It would be interesting to see a CPU profile from when the problem occurs,
taken with something like sysprof or perf.

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