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[Václav Šmilauer <eudoxos@xxxxxxxx>]

I am using HD4850 card with binary drivers, but it was quite trial-and-
error to get it to run.

FWIW, I have stock kernel (2.6.28-15-generic), xorg and mesa from
https://launchpad.net/~xorg-edgers and ATI binary drivers from their
website (they provide a binary program that can be run to make
installable deb packages locally, which have version 2:8.640-0ubuntu1).
The open-source driver runs glxgears, but not yade (and not compiz, for
that matter, either).

At first yade would show just blank 3d view if compiz (accelrated
desktop) was enabled, but it somehow is OK now, probably after some
random settings in the catalyst drivers. Second issue was that DRM
wasn't enabled as i915 module was blocking fglrx module from being
loaded (I had to blacklist i915), but that is clearly stated in
/var/log/Xorg.0.log.

Now it is working fine for me, but it is really not bug in yade, and
definitely not a critical one.

-- 
bzr1735 OpenGL + ATI serious problems, ubuntu 9.04
https://bugs.launchpad.net/bugs/419861
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Status in Yet Another Dynamic Engine: New

Bug description:
I am helping Fernando Alonso-Marroquin to get yade running on his PC. He has ubuntu 9.04, ATI graphics card:

#lspci | grep VGA
01:00.0 VGA compatible controller: ATI Technologies Inc RV516 [Radeon X1300/X1550 Series]

#glxinfo | grep direct
direct rendering: Yes

And he is encountering serious display problems. Sometimes everything works as it should but sometimes:

- only boxes are drawn (either solid or wireframe) and spheres are not drawn at all
- only light source is drawn, and nothing else
- in all cases at least a light source is shown
- drawing Body_ID always works and can be used to reassure the existence of bodies in the OpenGL display

This seems to be irrelevant to restarting yade. Sometimes it does, sometimes it doesnt work just after the restart. The same applies, when closing or opening 3D views, or generating a new simulation. Sometimes it works, sometimes doesnt.
I've never seen such behaviour on my PC.

I have an ATI card lying there, so I will try to reproduce it. I consider this a critical bug.