DRI problems with ati/radeon on stable/7 r203425

[Warren Block]

On Mon, 8 Feb 2010, David Wolfskill wrote:

> On Mon, Feb 08, 2010 at 11:29:44AM -0700, Warren Block wrote:
>
>> Oh, and you should probably have Option "AccelMethod" "EXA" in the
>> driver section of xorg.conf.
>
> Ok; I hadn't uncommented any of the "acceleration" lines in the file --
> I tend to leave things at default values unless I have a known reason to
> change them (or I'm too bored, which doesn't happen often).  :-}
>
> Merely explicitly disabling the "NoAccel" option(!) appears to have had
> no particular effect -- I was able to get a locakup (or extremem
> slowdown) with it.
>
> Doing that in conjunction with specifying EXA as the AccelMethod does
> appear to avoid the problem -- I tried at least a dozen times, and
> there's been no failure.  On the other hand, animated displays sometimes
> "glitch" rather more often with EXA than with teh default (XAA).

It's my impression that EXA is the best supported mode (on radeon) and 
XAA suffers from neglect.

What do you mean by "glitch"?  Option "EXAVSync" "On" might help, but 
you shouldn't be seeing stray pixels.

-Warren Block * Rapid City, South Dakota USA