3D acceleration only works for one user at a time

Ouattara Oumar Aziz (alias wattazoum) wattazoum at gmail.com
Wed Nov 7 22:21:54 UTC 2007

Peter Gaston a écrit :
> My video card is an old AGP Powercolor Radeon 9250 (r200). Using the
> open source ATI Xorg drivers, I can get hardware 3D acceleration to
> work for only one logged in user. Because of this, Compiz runs slowly
> for all other users.
> I have traced the problem to the lack of direct rendering in the other
> logged in users. Running "glxinfo | grep 'direct rendering'" shows
> "direct rendering: Yes" for the the user with fast 3D desktop effects
> but "No" for all the other users.
> Logging out all users and logging back only fixes the problem by
> shuffling the user who gets the hardware 3D acceleration. At any given
> time, only one user has accelerated graphics.
> What do I need to do to fix this problem?

Currently, in my humble opinion, there is nothing you can do to fix this
but open a bug report to push for a fix .
I think compiz, doesn't support more than one user at a time.

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