** Description changed:

  Binary package hint: xorg
  
  After upgrading from feisty to gutsy, X won't come up anymore. After hacking 
around in xorg.conf, I hit a bug in the Radeon driver interacting with Xinerama.
  I'm using a dual head setup, as you can see from the config. 
  
  Commenting out the Xinerama option results in garbled graphics, leaving
  it in makes X crash.
+ 
+ [metasquier]
+ I have also experienced the same bug, but I have looked into it further and 
discovered that it is affected on both the i386 and the amd64 kernel.  It 
causes the screen corruption on any radeon driver available, and with any 
version of xinerama but ONLY with jaunty not with intrepid.  When the screen 
corruption occurs, the whole kernel crashes as I cant send it any acpi commands 
(via power button) to shutdown.  I suspect the problem is a bug in Xinerama 
that makes it incompatible with the new kernel version because I experienced 
the exact same bug in the latest release of debian.

** Description changed:

  Binary package hint: xorg
  
  After upgrading from feisty to gutsy, X won't come up anymore. After hacking 
around in xorg.conf, I hit a bug in the Radeon driver interacting with Xinerama.
  I'm using a dual head setup, as you can see from the config. 
  
  Commenting out the Xinerama option results in garbled graphics, leaving
  it in makes X crash.
  
  [metasquier]
  I have also experienced the same bug, but I have looked into it further and 
discovered that it is affected on both the i386 and the amd64 kernel.  It 
causes the screen corruption on any radeon driver available, and with any 
version of xinerama but ONLY with jaunty not with intrepid.  When the screen 
corruption occurs, the whole kernel crashes as I cant send it any acpi commands 
(via power button) to shutdown.  I suspect the problem is a bug in Xinerama 
that makes it incompatible with the new kernel version because I experienced 
the exact same bug in the latest release of debian.
+ 
+ Also, if there is an error in the xorg.conf file (such as a parsing
+ error etc) then it will also corrupt the screen (even with Xinerama off)
+ that explains the above bug.
+ 
+ Temporary solution: revert back to Ubuntu 8.10 for Xinerama + radeon
+ dual head use.

-- 
Xorg radeon crashes w/ xinerama, displays garbage without
https://bugs.launchpad.net/bugs/157386
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