Backtrace:
0: /usr/bin/Xorg (xorg_backtrace+0x28) [0x4667b8]
1: /usr/bin/Xorg (0x400000+0x67d49) [0x467d49]
2: /lib/libpthread.so.0 (0x7faa06720000+0xeff0) [0x7faa0672eff0]
Segmentation fault at address (nil)
Fatal server error:
Caught signal 11 (Segmentation fault). Server aborting
0: /usr/bin/Xorg (xorg_backtrace+0x28) [0x4667b8]
1: /usr/bin/Xorg (0x400000+0x67d49) [0x467d49]
2: /lib/libpthread.so.0 (0x7faa06720000+0xeff0) [0x7faa0672eff0]
Segmentation fault at address (nil)
Fatal server error:
Caught signal 11 (Segmentation fault). Server aborting
Other VMs (Windows 8, Debian) start fine. XP VM causes segfault and X restart 100% reliably.
Debian Wheezy 64 bit host, XP32 Guest VM.
Problem only since updating
[SECURITY] [DSA 2661-1] xorg-server security update