On Mon, 29 Apr 2002, José Fonseca wrote:

> On 2002.04.29 00:33 Peter Andersson wrote:
> >> 
> >> 
> >> hmmm.. OK, here are some questions for you:  Did you actually see the
> >> gears being drawn, or just the window with a black background?
> > I saw the gears. Previously when it crashed to xmon i only saw the 
> > window with the black background. So this is the first time for me when 
> > the gears actually get drawn.
> > 
> >> If you saw them being drawn, did you see them moving before the lockup?
> > No motion the system hung as soon as it drew the first frame.
> 
> This is strange. It seams that it drawed a full frame and copied the back 
> to the front buffer. It's not clear where the fault happened, as it should 
> be able to repeat this cicle over and over.
> 
> > 
> >> When the lockup happened, did the screen blank or did it just freeze?
> >> 
> > It just froze.
> 
> I said that u had to make ctrl-alt-del. This in PowerPC means what? Can u 
> still ssh? If yes a backtrace from glxgears would be great. If not running
> 
>       DRI_MACH64_DEBUG=all glxgears > dump.txt 2>&1
> 
> would have to do.
>

Actually turning on all the debugging options when you're not stepping
through in a debugger will probably __cause__ a lockup.  Setting a
breakpoint at the SwapBuffers would let you get a frame of output at a
time, but you'd need to compile gears from the Mesa source with debugging 
symbols.
 
-- 
Leif Delgass 
http://www.retinalburn.net


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