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i915: disable DAC on Ironlake also when doing CRT load detection.
authorDave Airlie <airlied@redhat.com>
Wed, 4 Aug 2010 05:52:19 +0000 (15:52 +1000)
committerEric Anholt <eric@anholt.net>
Sun, 22 Aug 2010 06:07:04 +0000 (23:07 -0700)
Like on Sandybridge, disabling the DAC here when doing CRT load detect
avoids forever hangs waiting on the hardware.

test procedure on HP 2740p:
boot with no VGA plugged in, start X,
plug in VGA monitor (1280x1024)
chvt 3
machine hangs waiting forever.

Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Eric Anholt <eric@anholt.net>

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