[APPLIED][PATCH] [Karmic SRU] [Lucid] drm/i915: Fix sync to vblank when VGA output is turned off

[Stefan Bader]

Alberto Milone wrote:
> Hi all,
> 
> SRU Justification:
> 
> The problem described in this email was reported in a private OEM bug report 
> for Dell and has been solved by upstream. It's a regression in the drm code 
> which causes a massive system slowdown if we turn off the VGA output.
> 
> The patch is sane and minimal and is available in the drm-intel branch and in 
> the linux-next branch (see the link to the commit in the bug report).
> 
> I have applied (and slightly adapted, as it didn't apply cleanly to our lucid 
> and karmic git branches) and tested the patch successfully in Karmic.
> 
> The integration of this patch is very important for our Dell projects and for 
> the Ubuntu desktop at large.
> 
> Please include the attached patch in both Karmic and Lucid ASAP.
> 
> Bug #494461
> 
> Thanks in advance for your time.
> 
> Regards,
> 
> 
Ok, thanks Alberto. I applied the patch now for Karmic. For Lucid it hopefully
gets down from stable, but we / you probably should keep an eye on it for before
the release.

-Stefan