via k8m890 very slow with vesa

Luc Verhaegen libv at
Thu Nov 23 16:34:26 PST 2006

On Thu, Nov 23, 2006 at 11:42:43PM +0100, Henrik Lundberg wrote:
> Hi.
> I am having the exact same problem. vesa is terribly slow when moving
> windows or window contents.
> (Though, reasonably fast at drawing new content.)
> Since it seems to be stuff that should be 2D accelerated that is slow I
> thaught maybe 2D acceleration was disabled. Obviously, without 2D
> acceleration there must be some software fallback in place, which leads
> me to yet another thing I don't understand. I'm sitting here with a
> modern integrated graphics chip somewhat tightly coupled with a 2GHz
> Athlon 64 which hits the roof when I'm dragging around half a million
> pixels. Shouldn't that be fast? The software fallback doesn't seem very
> optimized OR there's a bug somwhere between just behind my eyeballs and
> .
> Lets go with the latter theory. According to my logs vesa and XAA loads
> fine and I see nothing else suspicious and related to this problem.
> Like you, I have ShadowFB enabled. (default and good for performance
> says a man.)
> Unlike you, I have Backing store enabled. (I honestly don't know what it
> is but I didn't notice any difference enabling it.)
> I also tried drivers from viaarena, and
>, but with no luck in any case.
> I hope someone with a solution sends it to this list.
> Best regards,
> /Henrik
Oh. A solution. An insta-fix. Freeze-dried so it preserves all the 
flavours and goodness. Just add some water, stir, and then sit back and 

That's exactly what we want, isn't it?

Luc Verhaegen.

More information about the xorg mailing list