Public bug reported:

After I upgraded the system from 12.04 to 12.10, the lightdm cyclically tris to 
start the Xserver, which crashes.
In the log file I can find the following crash report:

[   569.109] (EE)
[   569.109] (EE) Backtrace:
[   569.109] (EE) 0: /usr/bin/X (xorg_backtrace+0x49) [0xb771cd69]
[   569.109] (EE) 1: /usr/bin/X (0xb7575000+0x1abc56) [0xb7720c56]
[   569.110] (EE) 2: (vdso) (__kernel_rt_sigreturn+0x0) [0xb755240c]
[   569.110] (EE) 3: /usr/lib/xorg/modules/drivers/sis_drv.so 
(0xb6f77000+0x4ebfc) [0xb6fc5bfc]
[   569.110] (EE) 4: /usr/lib/xorg/modules/drivers/sis_drv.so 
(0xb6f77000+0x3a629) [0xb6fb1629]
[   569.110] (EE) 5: /usr/lib/xorg/modules/drivers/sis_drv.so 
(0xb6f77000+0x28aeb) [0xb6f9faeb]
[   569.110] (EE) 6: /usr/lib/xorg/modules/libexa.so (0xb6f13000+0x5278) 
[0xb6f18278]
[   569.110] (EE) 7: /usr/lib/xorg/modules/libexa.so (0xb6f13000+0x578f) 
[0xb6f1878f]
[   569.110] (EE) 8: /usr/lib/xorg/modules/libexa.so (0xb6f13000+0x5967) 
[0xb6f18967]
[   569.110] (EE) 9: /usr/lib/xorg/modules/libexa.so (0xb6f13000+0x618a) 
[0xb6f1918a]
[   569.110] (EE) 10: /usr/lib/xorg/modules/libexa.so (0xb6f13000+0x3e9f) 
[0xb6f16e9f]
[   569.110] (EE) 11: /usr/lib/xorg/modules/libexa.so (0xb6f13000+0xa1b2) 
[0xb6f1d1b2]
[   569.111] (EE) 12: /usr/lib/xorg/modules/libexa.so (0xb6f13000+0xacc3) 
[0xb6f1dcc3]
[   569.111] (EE) 13: /usr/bin/X (0xb7575000+0x1295fb) [0xb769e5fb]
[   569.111] (EE) 14: /usr/bin/X (miPaintWindow+0x266) [0xb76fc456]
[   569.111] (EE) 15: /usr/bin/X (miClearToBackground+0x11c) [0xb771460c]
[   569.111] (EE) 16: /usr/bin/X (0xb7575000+0x38311) [0xb75ad311]
[   569.111] (EE) 17: /usr/bin/X (0xb7575000+0x3cba5) [0xb75b1ba5]
[   569.112] (EE) 18: /usr/bin/X (0xb7575000+0x2a10a) [0xb759f10a]
[   569.112] (EE) 19: /lib/i386-linux-gnu/libc.so.6 (__libc_start_main+0xf3) 
[0xb71b94d3]
[   569.112] (EE) 20: /usr/bin/X (0xb7575000+0x2a4e9) [0xb759f4e9]
[   569.112] (EE)
[   569.112] (EE) Segmentation fault at address 0x0
[   569.113]

I attach also the full log from the X server

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: xserver-xorg-video-sis 1:0.10.7-0ubuntu1
ProcVersionSignature: Ubuntu 3.5.0-45.68-generic 3.5.7.26
Uname: Linux 3.5.0-45-generic i686
ApportVersion: 2.6.1-0ubuntu13
Architecture: i386
Date: Fri Jan 17 15:07:53 2014
InstallationDate: Installed on 2013-12-31 (16 days ago)
InstallationMedia: Xubuntu 12.04.3 LTS "Precise Pangolin" - Release i386 
(20130822)
MarkForUpload: True
SourcePackage: xserver-xorg-video-sis
UpgradeStatus: Upgraded to quantal on 2014-01-17 (0 days ago)

** Affects: xserver-xorg-video-sis (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug i386 quantal

** Attachment added: "Sample log from the X server"
   
https://bugs.launchpad.net/bugs/1270162/+attachment/3950936/+files/Xorg.0.log.old

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https://bugs.launchpad.net/bugs/1270162

Title:
  Xserver crashes after upgrade to 12.10 on an old laptop with SiS video
  card

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