Upgrade to 8.04 and now Xgl is using 95% of CPU

Abhinav Gupta abhinav.g90 at gmail.com
Fri Oct 24 17:40:19 UTC 2008

First remove XGL
sudo apt-get remove xserver-xgl
And then follow installation guide on
I went for the "Method 2: Manual Install". Works perfectly for me. Though
they seem to have changed it. Was something else a few days ago.

I made a small shell script that will remove xgl and install the requested
ATI drivers after downloading them.
Get the code, save as "ati-installer" on your desktop.
chmod +x ati-installer
sudo ati-installer 8.9 -xgl
This will download the ATI drivers version 8.9, remove XGL and install new
Warning : Use the script at your own risk. I made it for personal use. If
you don't think you can trust the script, just follow the instructions on
the link I sent. :)

And a suggestion - go for a fresh install. I mean instead of upgrading,
fresh installs (format and install) are somehow better as with each new
release, there are a lot of changes that are made. This won't make much of a
difference I guess, but just my preference.

Abhinav Gupta

On Fri, Oct 24, 2008 at 1:01 PM, stan <stanb at panix.com> wrote:

> I just upgraded my laptop to 8.04, in preparation for going to 8.10, and
> noticed it became very slow. I ran top and discovered that Xgl is now using
> over 90%  of the cpu with virtually nothing going on, other than being
> logged
> into a X (KDE) session). The Xorg startup log identifies the card as:
> (--) PCI:*(1:5:0) ATI Technologies Inc RS485 [Radeon Xpress 1100 IGP] rev 0
> And I am using the closed source graphics driver.
> What should I check next to try to resolve this issue?
> --
> One of the main causes of the fall of the roman empire was that, lacking
> zero, they had no way to indicate successful termination of their C
> programs.
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