[Intel-gfx] Another GPU hang

[Chris Wilson]

On Sun, 22 May 2011 01:47:01 +0300, Dmitry Nezhevenko <dion at inhex.net> wrote:
> I've just tried to reproduce it again. It looks like I'm unable to do it when
> external display (DVI connected via DMI->HDMI cable) is turned off via xrandr. 
> 
> However if display is active (LVDS turned off and HDMI1 active) it was
> easy enough to reproduce this by just playing with HDMI connector. So
> after 5-6 attempts to plug/unplug monitor I've got hung again:

Ok, and I just got another bug (37450) which makes me think that, at
least, part of this problem is due to the stale DPMS values. (We depend
upon the DPMS state for not feeding WAITs onto a disabled pipe).
https://bugzilla.kernel.org/show_bug.cgi?id=24982
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre