Bug#596453: 855GM: X hard locks system on startup

[Cesare Leonardi <celeonar@gmail.com>]

On 09/11/2010 06:24 PM, Robert Scott wrote:
> Blacklisting the 855GM from KMS in 2.6.32-21 to fix bugs like 582105
> seems to be causing my system to hard lock when X starts up. Magic
> sysrq key does nothing, and of course the 855GM being totally
> blacklisted means modeset=1 is powerless.

Hi Robert, unfortunately it's a known problem for i855 users.
While waiting for a solution, you can find more info here (the first is 
the more detailed):
#594623
#595511
#595521

Ciao.

Cesare.