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[vincefn <vincent.favre-nicolin@xxxxxx>]

Public bug reported:

This is a followup on a bug discussion started in bug
https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-
drivers/+bug/548362

This bugs is related to a crash when loading X, for PC with at least two
nVidia graphics cards and using the nvidia-current drivers (195.36.15)
with kernel 2.6.32-any version.

In my case the installation was done with a clean install of Kubuntu
Lucid Lynx - booting with the two graphics cards and the nouveau driver
works fine. Installing the nVidia driver went also fine, but during
reboot the computer froze right around the time X should load. The
computer is totally unresponsive, only a hard reset allows rebooting.

The booting issue goes away if one of the two cards is removed or, if
using a 2.6.31 kernel with the two cards attached.

Note that in my case only one card has two screens attached, the other
has non, for GPU computing.

Using the 195.36.24 nvidia-current driver (from ppa) gives the same
results.

This bug is still present after applying all available updates for
Lucid.

Attached is the nvidia-bug-report, which aggregate most useful information.  What I did was:
1) Start from working 2.6.31
2) reboot on 2.6.32 => crash
3) wait 2 minutes
4) hard reboot to 2.6.31
5) nvidia-bug-report.sh

  In the nvidia-bug-report text file you have aggregated (among other
files) the Xorg.0.log and Xorg.0.log.old (just search for 'Xorg.0' to
find them). However at the beginning of each log you'll see that the
kernel is 2.6.31... In other words during the 2.6.32 boot X did not
manage to start logging...

Relevant links:
https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers/+bug/548362

http://www.nvnews.net/vbulletin/showthread.php?p=2243704
   => apparently there is an incompatibility between current nvidia graphics driver and the new VGA arbiter (not present in 2.6.31 ?)

** Affects: nvidia-graphics-drivers (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: lucid

-- 
nvidia-current 195.36.15 + kernel 2.6.32 + dual cards crashes system
https://bugs.launchpad.net/bugs/573557
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