Comment 4 for bug 1249758

I have not been able to test the upstream kernel - it seems to be unable to set my graphics card to produce any output.

However, I have been able to create a fresh install of 12.04 on a different hard disk - the other hardware exactly the same, just a different hard disk. I started with the original 12.04 CD and then took all the available updates including 3.2.0-56 so that the setup should have been as near as possible the same as the one that caused trouble.

The result is - it seems to run just fine. Hence at the moment my assumption is that the problem was due to some unidentified mishap during the update to 3.2.0-56.

I am intending to do an install of 13.10 to a different hard disk. When I have that established as a working environment I will try a surface scan of the disk with the problem setup and perhaps try to uninstall and reinstall 3.2.0-56 to see what happens.

I do have a copy of the relevant kernel log showing call stack dumps and 'BUG' messages that I could add if you think it would be of any help. Otherwise I will update this report if I can find anything that might be of interest when I am in a position to investigate further.