[Intel-gfx] DVI/HDMI regression due to 30ad48b7334a2eb2edf22f6c91f7b3f22a22a837

[Jesse Barnes]

Zhenyu's commit to add IGDNG support broke my G45 configuration.  It
looks like my config breaks when the SDVO_NULL_PACKETS_DURING_VSYNC bit
is set in the SDVO mode reg (I have a dual head config with HDMI and
DVI).  Not setting the bit allows both displays to work.  Setting it
causes a corrupted mode on my HDMI attached display and a blank screen
on the DVI attached one.

Any ideas here Zhenyu?

commit 30ad48b7334a2eb2edf22f6c91f7b3f22a22a837
Author: Zhenyu Wang <zhenyuw at linux.intel.com>
Date:   Fri Jun 5 15:38:43 2009 +0800

    drm/i915: Add HDMI support on IGDNG


-- 
Jesse Barnes, Intel Open Source Technology Center