http://bugs.freedesktop.org/show_bug.cgi?id=21842





--- Comment #16 from Michel Dänzer <mic...@daenzer.net>  2009-05-22 05:45:05 
PST ---
(In reply to comment #11)
> Hmm. When I run the X server in gdb it never crashes. Even more things work.
> The clear color issue(21569) is gone too.

Is it loading the driver you think it is?

grep _dri /var/log/Xorg.0.log

Also, when testing something with direct rendering you may want to set
LIBGL_DEBUG=verbose to verify libGL is loading the right driver.

> I get a broken pipe signal every now and then, but that happens when I
> terminate an app, and if I just enter 'c' the server continues just fine.

Right, that's normal as part of the X server operation. Use

handle SIGPIPE nostop noprint

to make gdb ignore it.


(In reply to comment #12)
> I still suspect that there's some uninitialized variable or buffer overrun or
> something like that.

Running the X server in valgrind might be interesting if so.


(In reply to comment #14)
> Program received signal SIGSEGV, Segmentation fault.
> DRI2GetBuffers (pDraw=0x9434fa0, width=0xbffeff34, height=0xbffeff30,
>     attachments=0xb70fd05c, count=2, out_count=0xbffeff2c) at dri2.c:143
> 143         if (pPriv->buffers == NULL ||

Is pPriv NULL? (Try 'bt full' next time)


> X server: 5cd5a01259ba349f1868ca4af04207cf120d69e4

Apparently you're using server-1.6-branch. Can you try master or at least
cherry-picking the DRI2 changes nominated on
http://wiki.x.org/wiki/Server16Branch ?


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