linux-kernel - Re: [PATCH resend] drm: ignore LVDS on intel graphics systems that lie about having it

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Date:	Thu, 14 May 2009 14:16:48 -0700
From:	Eric Anholt <eric@...olt.net>
To:	Jarod Wilson <jarod@...hat.com>
Cc:	dri-devel@...ts.sourceforge.net, linux-kernel@...r.kernel.org,
	xorg-devel@...ts.x.org, notting@...hat.com
Subject: Re: [PATCH resend] drm: ignore LVDS on intel graphics systems that
 lie about having it

On Tue, 2009-05-05 at 10:00 -0400, Jarod Wilson wrote:
> There are a number of small form factor desktop systems with Intel mobile
> graphics chips that lie and say they have an LVDS. With kernel mode-setting,
> this becomes a problem, and makes native resolution boot go haywire -- for
> example, my Dell Studio Hybrid, hooked to a 1920x1080 display claims to
> have a 1024x768 LVDS, and the resulting graphical boot on the 1920x1080
> display uses only the top left 1024x768, and auto-configured X will end
> up only 1024x768 as well. With this change, graphical boot and X
> both do 1920x1080 as expected.
> 
> Note that we're simply embracing and extending the early bail-out code
> in place for the Mac Mini here. The xorg intel driver uses pci subsystem
> device and vendor id for matching, while we're using dmi lookups here.
> The MSI addition is courtesy of and tested by Bill Nottingham.
> 
> Signed-off-by: Jarod Wilson <jarod@...hat.com>
> Tested-by: Bill Nottingham <notting@...hat.com>

Looks good, I'm pulling it for 2.6.30.  Thanks!

-- 
Eric Anholt
eric@...olt.net                         eric.anholt@...el.com



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