[ltp] New Xorg ATI video drivers sloooow (in Fedora 10)

[Alex Deucher]

On Mon, Jan 5, 2009 at 7:04 AM, Matthias Runge <mrunge@matthias-runge.de> wrote:
> Hi folks,
>
> as the subject says, I'm experiencing a very bad 3d performance using
> the ATI xorg-x11-driver version 6.9.
>
> I've used fedora 9 also, so I just did an upgrade (and did not touch my
> xorg.conf). In Fedora 9 the "ultimate benchmark" glxgears gave me approx
>  800-900 frames per second, Fedora 10 just comes to 50 frames. (Machine
> is a T43, ATI graphics, 1400x1050 screen)
> Afaik, ubuntu uses newest xorg, too. Does somebody see comparing results?
>
> Does someone else see this regression? Has anybody any clue, what to do?
> I do not really need 3d, compiz etc., but graphics rendering feels
> really slow and makes scrolling painful.

Make sure the DRI is enabled.  F10 enables some experimental memory
management and KMS features that may be to blame.  Try booting with
nomodeset on the kernel command line.

Alex