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Date:	Sun, 11 Mar 2012 07:20:47 +0000
From:	Dave Airlie <airlied@...il.com>
To:	Carsten Emde <C.Emde@...dl.org>
Cc:	David Airlie <airlied@...ux.ie>,
	Thomas Gleixner <tglx@...utronix.de>,
	DRI <dri-devel@...ts.freedesktop.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/3] drivers-gpu-drm-add-disable-enable-connector.patch

On Sat, Mar 10, 2012 at 8:20 PM, Carsten Emde <C.Emde@...dl.org> wrote:
> Some recent integrated graphics chipset, notably Intel's "Pineview", also
> provide on-chip LVDS support. As an extra service, the LVDS interface supplies
> EDID data - irrespective of whether an LVDS panel is connected or not. The
> drm_mode_getresources() function, therefore, causes Xorg to always include
> the LVDS panel into the display and initialize a separate screen for it. e.g.
> (II) intel(0): Output LVDS1 connected
> (II) intel(0): Output VGA1 connected
> (II) intel(0): Using spanning desktop for initial modes
> (II) intel(0): Output LVDS1 using initial mode 1024x768 +0+0
> (II) intel(0): Output VGA1 using initial mode 1280x1024 +1024+0
> which is not what you want, if the only connected screen is a VGA monitor.
> One would assume that the BIOS settings of such systems would allow to
> separately enable or disable LVDS support; unfortunately, systems have been
> found in the wild that do not provide this feature.

So video=LVDS-1:d doesn't work for you?

Dave.
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