Re: [Dri-devel] Problems with libglut, last attempt.

[Brian P. <br...@va...>]

German Gomez Garcia wrote:
> 
> On 2000.12.14 23:18:08 +0100 Brian Paul wrote:
> > I don't recall seeing any previous posts from you.
> 
>         Well, you can search in the mailing list archive for
> libglut, or glut I'm sure you would find it.
> 
> > What exactly is the problem?
> 
>  The problem is that every application I linked to libglut will crash the
> computer, sometimes the first time the app is run, other times the second,
> but never past the third time. I have tested it with various apps. Every
> example in the Mesa that needs libglut, a really simple app available on
> the net (cube.c) that simple draw a cube and rotate it. And other apps like
> MathGL3d (which also use libglui).
> 
>  I'm using latest CVS, but it has been there since five or six months, in
> fact I don't remember anytime where it worked, although I don't test it
> (any app linked against libglut) until five or six months ago. I have a
> Matrox G400 MAX and I'm running kernel 2.4.0-test12 (pre) but as you can
> suppose I've run lots of kernels (since five months I have the oportunity
> to
> test a lot of them :-), and I've tested also with stable 2.2.x (2.2.16,
> 2.2.17, and 2.2.18pre) with the same results. I have a dual PII450 (maybe
> it's related to SMP?).
> 
>  The crash is a complete crash, no keyboard, no sysrq, no disk activity.
> I've tried to connect through the net but it doesn't work either, so I
> suppose it's related to the kernel in some way. I've tried both the mga.o
> included in the kernel and the mga.o included in the DRI CVS Tree, both
> fail.
> 
>  The main problem is that the bug is very difficult to track down, mainly
> because I cannot log anything, as soon as the program fails nothing else
> get done. The crash is not a segfault or similar (at least at first sight)
> because the screen doesn't change. The best way to define what happens is
> freeze, mouse pointer included. Sometimes the crash is not inmediat, I can
> SysRq + K to kill the app and change to a console to try to do something,
> but two or three seconds after the first crash the computer completely
> crash. I'm not fast enough to login, although I think that it wouldn't let
> me log in.
> 
>  Other apps (every GL applet in xcsreensaver, Geomview, Vis5d, etc) works
> perfectly (great job!) just the apps linked against libglut fails. One
> strange thing is that some apps that sometimes run once or twice before
> crashing show strange colors, not the expected colors, and some widgets are
> not completely drawn.
> 
>  Of course if I disable DRI everything works perfectly (slow, but perfectly
> :-).
> 
>  If you want more info or want me to try something just tell me, I really
> need libglut under DRI, and XF4.x is too good to go back to 3.3.6+Utah-GLX.
> 
>  Thanks for your time

Have you tried Mesa/demos/glinfo?  It uses glut, opens a window, but
doesn't render anything.

The next one to try would be Mesa/demos/clearspd.  It only calls glClear
and a few other simple functions; no 3D rendering.

If you can provide some info about your motherboard one of the DRI
developers might be able to comment on possible AGP issues.

-Brian

PS: I'm cc'ing the dri-devel list so that others might be able to help.