Bug#443936: xserver-xorg-video-mga: windowmaker and 1.9.99 get along terribly

[k l s <dob@eamp.org>]

> I have pretty much no idea what to look at here. So I am CCing Tilman
> (the upstream dev).
> 
> I didn't use WindowMaker recently so I don't have any idea what it looks
> like these days. Do you have the same problem in you start an empty
> session with something like "startx /usr/bin/xterm" ?

I've tried using openbox w/ an xterm and it has no problems.

> The problem could related to the acceleration architecture. You're using
> the default right now (XAA). Does it help if you add:
>     Option "NoAccel" "true"
> to the Device section of your xorg.conf? It will disable XAA
> acceleration completely.

NoAccel is slower than I recall accelerated having been in the past
(as it ought). I think it starts faster than the standard XAA
acceleration, but it gets slower as windows are repeatedly exposed.
Some kind of resource starvation?

> Or maybe the new architecture EXA would be better (I don't know how good
> it is in the mga driver so far). Does it help if you add
>     Option "AccelMethod" "EXA"
> instead of the above NoAccel line?

I think I remember having read that EXA isn't ready yet, but I tried
it for the heck of it. It's tremendously slower.

Thank you!
 - robert jacobs