Bug#537964: video-radeon: poor performance on rotated display

[Michal Suchanek <hramrach@centrum.cz>]

2009/7/22 Brice Goglin <Brice.Goglin@ens-lyon.org>:
> On Wed, Jul 22, 2009 at 03:34:07AM +0200, Michal Suchanek wrote:
>> Package: xserver-xorg-video-radeon
>> Version: 1:6.9.0-1+lenny4
>> Severity: normal
>> File: video-radeon
>>
>>
>> When I rotate one screen the performance of drawing on that screen drops
>> to levels on par or below software rendering performance.
>>
>> glxgears speed is aproximately inverse-proportional to the part of gears
>> shown on a rotated screen. Terminals can be seen redrawing .. from the
>> physical screen top to the physical screen bottom, very slowly.
>> This rendeing order is different from the logical orientation of the
>> large virtual screen.
>
> From what I've seen in one of your other bug reports,
> you seem to be running Debian's 2.6.30 kernel without
> the firmware-linux package.
> Please install firmware-linux since it is necessary
> for hardware acceleration on some boards and I guess it
> may help for rotation.

I have tested this only after installing the firmware because DRI
would not work otherwise.

You can see in the log that in this case DRI GLX was started without problems.

Thanks

Michal