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

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Fri Jan 20 00:26:02 UTC 2017


--- Comment #10 from Michel Dänzer <michel at daenzer.net> ---
(In reply to Eugenij Shkrigunov from comment #6)
> >  Option "Accel" "off"
> The problem remains. (xorg-server-1.18.4 + xf86-video-ati-7.7.0)

How about Option "ShadowPrimary"? If neither helps, please attach the
corresponding Xorg log file.

> > It would be interesting to see a CPU profile from when the problem occurs,
> > taken with something like sysprof or perf.
> I have no experience with these tools.

sysprof is very easy to use.

> I have not been able to compile xf86-video-ati-7.5.0 for xorg-server-1.18.4:

Yes, older driver versions generally can't compile against newer xserver
versions (at least not until the time machine is invented ;). Newer driver
versions still work with older xserver versions though, which is why I
suggested trying xf86-video-ati-7.7.0 and xorg-server-1.17.4.

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