Bug#471456: Very high CPU usage while resizing/scrolling/using it

[Brice Goglin <Brice.Goglin@ens-lyon.org>]

Xavier Cremaschi wrote:
> Package: xserver-xorg
> Version: 1:7.3+10
>
> Xorg is eating lot of CPU (up to 100%) on trivial tasks such as :
> - scrolling with Shift+PageDown in a big openoffice calc spreadsheet
> - resizing the default Xfce Terminal
> - scrolling in big web pages with iceweasel
> - switching for tab to tab with iceweasel
> I do not use compiz, fusion, or anything else like that.
> My deskop manager is Xfce 4.4.2.1
>
> After having found this link :
>     http://lorenzod8n.wordpress.com/2007/12/23/xorg-73-in-sid-harmful/
> I tried to downgrade xserver-xorg (and only xserver-xorg) to Xorg
> 1:7.3+7, determining it was the right version to test by using the
> date on this blog +  http://snapshot.debian.net/
>
> Everything is fast again, I can re-use openoffice and iceweasel normally.

Try adding
    Option "AccelMethod" "XAA"
to the device section of your xorg.conf

Brice