Hi,
Confession time.
My original /var/log/Xorg.0.log has vanished on me. I cannot always guarantee outcomes when I try things. I made a copy of /var/log/Xorg.0.log old, booted that, which failed.
The following lines from that log seem to be what you are after. Written more in hope then anything else.
131.594] (EE)
[ 131.594] (EE) Backtrace:
[ 131.809] (EE) 0: /usr/bin/X (xorg_backtrace+0x49) [0x81d6789]
[ 131.809] (EE) 1: /usr/bin/X (0x8048000+0x1921b4) [0x81da1b4]
[ 131.809] (EE) 2: linux-gate.so.1 (__kernel_rt_sigreturn+0x0) [0xffffe40c]
[ 131.809] (EE) 3: /lib/libc.so.6 (memcpy+0x27) [0xb7333bc7]
[ 131.809] (EE) 4: /usr/lib/xorg/modules/libexa.so (0xb76b3000+0x4f1c) [0xb76b7f1c]
[ 131.809] (EE) 5: /usr/lib/xorg/modules/libexa.so (0xb76b3000+0x544e) [0xb76b844e]
[ 131.809] (EE) 6: /usr/lib/xorg/modules/libexa.so (0xb76b3000+0x5698) [0xb76b8698]
[ 131.809] (EE) 7: /usr/lib/xorg/modules/libexa.so (0xb76b3000+0x7bb7) [0xb76babb7]
[ 131.809] (EE) 8: /usr/lib/xorg/modules/libexa.so (0xb76b3000+0x11f7f) [0xb76c4f7f]
[ 131.809] (EE) 9: /usr/lib/xorg/modules/libexa.so (0xb76b3000+0xea4d) [0xb76c1a4d]
[ 131.809] (EE) 10: /usr/lib/xorg/modules/libexa.so (0xb76b3000+0xefdf) [0xb76c1fdf]
[ 131.809] (EE) 11: /usr/bin/X (0x8048000+0x11214e) [0x815a14e]
[ 131.809] (EE) 12: /usr/bin/X (CompositePicture+0x299) [0x814ee49]
[ 131.809] (EE) 13: /usr/lib/xorg/modules/libexa.so (0xb76b3000+0xfc31) [0xb76c2c31]
[ 131.809] (EE) 14: /usr/bin/X (CompositeTrapezoids+0x9e) [0x814f0de]
[ 131.809] (EE) 15: /usr/bin/X (0x8048000+0x10c99b) [0x815499b]
[ 131.809] (EE) 16: /usr/bin/X (0x8048000+0x10753d) [0x814f53d]
[ 131.809] (EE) 17: /usr/bin/X (0x8048000+0x317dd) [0x80797dd]
[ 131.809] (EE) 18: /usr/bin/X (0x8048000+0x1f77a) [0x806777a]
[ 131.809] (EE) 19: /lib/libc.so.6 (__libc_start_main+0xf3) [0xb72ca773]
[ 131.809] (EE) 20: /usr/bin/X (0x8048000+0x1fb49) [0x8067b49]
[ 131.809] (EE)
[ 131.809] (EE) Segmentation fault at address 0x0
[ 131.809] (EE)
Fatal server error:
[ 131.809] (EE) Caught signal 11 (Segmentation fault). Server aborting
[ 131.809] (EE)
[ 131.809] (EE)
Please consult the The X.Org Foundation support
at
http://wiki.x.org
for help.
[ 131.809] (EE) Please also check the log file at "/var/log/Xorg.0.log" for additional information.
[ 131.809] (EE)
[ 131.810] (II) AIGLX: Suspending AIGLX clients for VT switch
[ 131.810] (II) NOUVEAU(0): NVLeaveVT is called.
[ 131.939] (EE) Server terminated with error (1). Closing log file.
Sorry, I am not more helpful. Thank you,
sevenjen