[intrepid] Xorg crashes when I lock my laptop

[arno_b]

Each time I lock my laptop, it freezes. I can only do ctrl-alt-backspace to close X.
It happens since I updated on Intrepid; worked fine on hardy.
I can reproduce it every time.

[arno_b (arno.b)]

uname -a
 Linux merlin-laptop 2.6.27-7-generic #1 SMP Fri Oct 24 06:42:44 UTC 2008 i686 GNU/Linux

fglrxinfo
display: :0.0 screen: 0
OpenGL vendor string: ATI Technologies Inc.
OpenGL renderer string: ATI Mobility Radeon X1700
OpenGL version string: 2.1.8087 Release

[arno_b (arno.b)]

Moreover, the SIGPIPE happens when I move the mouse (when the screen is locked) in order to show the password field.

I also have this crash randomly when I work on my laptop: the same backtrace. It happened, for example, when I try to close a console, when a click on a window, ...

[arno_b (arno.b)]

It sounds close to bug 212079 but I have no Segmentation fault here.

[arno_b (arno.b)]

When I desactivate compiz, I do not have this problem anymore: without compiz, I can see the password field when I move the mouse. But just after I typed my password, a SIGPIPE occurs, at each time. When I type 'cont' on the gdb of my remote computer, the session is unlocked has expected.

[arno_b (arno.b)]

I have more information now:
The problem always occurs when I select/preview some screensavers using gnome-screensavers.
Into kern.log I have these segfault when I select/preview screensavers:

Oct 28 17:47:03 merlin-laptop kernel: [ 585.785416] biof[7191]: segfault at 200 ip b7f5efed sp bfc68650 error 4 in ld-2.8.90.so[b7f4c000+1a000]
Oct 28 17:47:24 merlin-laptop kernel: [ 607.432337] biof[7196]: segfault at 200 ip b7ef7fed sp bf7ff1e0 error 4 in ld-2.8.90.so[b7ee5000+1a000]
Oct 28 17:47:39 merlin-laptop kernel: [ 622.537360] biof[7209]: segfault at 200 ip b7f9bfed sp bffa3990 error 4 in ld-2.8.90.so[b7f89000+1a000]
Oct 28 17:47:48 merlin-laptop kernel: [ 630.816383] busyspheres[7228]: segfault at 200 ip b801dfed sp bff27900 error 4 in ld-2.8.90.so[b800b000+1a000]
Oct 28 17:47:55 merlin-laptop kernel: [ 638.542595] colorfire[7235]: segfault at 200 ip b7f0cfed sp bf8166a0 error 4 in ld-2.8.90.so[b7efa000+1a000]
Oct 28 17:49:51 merlin-laptop kernel: [ 753.752294] biof[7381]: segfault at 200 ip b801afed sp bf923b70 error 4 in ld-2.8.90.so[b8008000+1a000]
Oct 28 17:49:56 merlin-laptop kernel: [ 759.376395] busyspheres[7388]: segfault at 200 ip b804ffed sp bfe573c0 error 4 in ld-2.8.90.so[b803d000+1a000]
Oct 28 17:50:03 merlin-laptop kernel: [ 766.304367] busyspheres[7397]: segfault at 200 ip b7fbafed sp bfdc28a0 error 4 in ld-2.8.90.so[b7fa8000+1a000]
Oct 28 17:50:09 merlin-laptop kernel: [ 772.236389] busyspheres[7402]: segfault at 200 ip b80e6fed sp bfdedfc0 error 4 in ld-2.8.90.so[b80d4000+1a000]
Oct 28 17:50:12 merlin-laptop kernel: [ 775.108334] busyspheres[7407]: segfault at 200 ip b80acfed sp bf8b3a90 error 4 in ld-2.8.90.so[b809a000+1a000]

[arno_b (arno.b)]

Maybe in relation with http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=500887