[Chimera-users] Fwd: X-server segmentation fault on launching chimera

Francesco Pietra chiendarret at gmail.com
Wed Apr 14 08:07:18 PDT 2010

Solved. For mysterious reasons, the OS has suddenly changed the X
daemon. Fro /var/Xorg.0.log" I noticed that instead of the correct
"Module glx:vendor="NVIDIA Corporation" it has changed to "Module
glx:vendor="X.Org Foundation". Reinstalled the driver, chimera OK.


---------- Forwarded message ----------
From: Francesco Pietra <chiendarret at gmail.com>
Date: Wed, Apr 14, 2010 at 12:19 PM
Subject: X-server segmentation fault on launching chimera
To: chimera <chimera-users at cgl.ucsf.edu>

Having upgraded Debian Linux i386 squeeze release from kernel 2.6.30
to 2.6.32 everything works except X-server segmentation fault on
launching CHIMERA, build 30282 of last March 29. I have successfully
recompiled CHIMERA, last Apr 14 build, on the updated Linux release,
to no avail. I need the experimental builds for features not included
in the stable release (centroid trace in movie). To compare, another
graphic program, GIMP, can be launched correctly.

Below - between *** - the final part of "Xorg.0.log" reporting
troubles. Before that, the log is identical to when X-server is
working properly.

Thanks for suggestions.

francesco pietra

0: /usr/bin/X (xorg_backtrace+0x3b) [0x80ada5b]
1: /usr/bin/X (0x8048000+0x5aa75) [0x80a2a75]
2: (vdso) (__kernel_rt_sigreturn+0x0) [0xb78b240c]
Segmentation fault at address (nil)

Fatal server error:
Caught signal 11 (Segmentation fault). Server aborting

Please consult the The X.Org Foundation support
at http://wiki.x.org
for help.
Please also check the log file at "/var/log/Xorg.0.log" for additional

(II) Power Button: Close
(II) UnloadModule: "evdev"
(II) Power Button: Close
(II) UnloadModule: "evdev"
(II) AT Translated Set 2 keyboard: Close
(II) UnloadModule: "evdev"
(II) ImPS/2 Logitech Wheel Mouse: Close
(II) UnloadModule: "evdev"

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