[Intel-gfx] [PATCH] Use enable bit for LVDS detect

[Robert Noland]

On Fri, 2008-11-21 at 01:36 -0800, Keith Packard wrote:
> On Fri, 2008-11-21 at 10:36 +0800, Zhenyu Wang wrote:
> > This looks like a promising right way to check if LVDS
> > is available or not. Because if LVDS is enabled on the board,
> > it will be used as primary display, so video bios should already
> > have initialized it.
> 
> we've considered this in the past, but rejected it as a laptop which has
> the lid closed or which is booted with a CRT connected will have the
> LVDS disabled when the X server starts.

FWIW, this is not the behavior that I see on my Dell D630.  LVDS is
always enabled (GM965).  In order to use 2 external displays, I have to
use xrandr to turn off LVDS and then enable VGA.  TMDS-1 is always
mapped to pipe a.

robert.

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