[Intel-gfx] intel-drm-nightly 3.13rc3 broke i830 - more debug

[Thomas Richter]

Hi Daniel,

>> Quick shot in the dark: Can you please try the below diff?
>>
>> If that doesn't work please remove the locking in that function completely
>> (i.e. remove the calls to drm_modset_lock|unlock_all).
> If that doesn't help please compile a pristine -nightly with lockdep
> (CONFIG_PROVE_LOCKING) rehang the machine and grab the complete dmesg.
> Please make sure that you don't line-wrap it for easier reading. Lockdep
> should be able to tell us who's blocking on what exactly here ...

Ok, tried that. Moving the lock did not improve anything. Removing it, 
well, "sort-of" improved the situation in so far as the system no longer 
hangs. However, I still don't get a working display. All I get is a dark 
screen, and only the cursor on top.

So long,
     Thomas