[ltp] xorg.conf for t42p + Dell 2407wfp monitor

[Marius Gedminas]

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On Mon, Dec 25, 2006 at 03:37:02PM -0800, Yury wrote:
> On Monday 25 December 2006 05:48, Marius Gedminas wrote:
> > The log file should also mention why it considers 1920x1200 unsupported,
> > a few tens of lines above this bit.
>=20
> I have posted my xorg.conf and the log to
>=20
> http://www.blin.com/web/xorg.conf
> http://www.blin.com/web/Xorg.1.0.log
>=20
> I think the monitor reports 1920x1200 as "Supported additional Video Mode=
"=20
> however it doesn't get listed under CRTC2 modes found for MergeFB.

Yes.  It looks like the X server doesn't know anything about a 1920x1200
mode (it discards a couple of 1920x1440 modes for various reasons, but
doesn't even mention 1920x1200, other than saying it's not supported).

If I'm right, then all you need to do is specify a ModeLine.  This:

(II) RADEON(0): Supported additional Video Mode:
(II) RADEON(0): clock: 154.0 MHz   Image Size:  519 x 324 mm
(II) RADEON(0): h_active: 1920  h_sync: 1968  h_sync_end 2000 h_blank_end 2=
080 h_border: 0
(II) RADEON(0): v_active: 1200  v_sync: 1203  v_sync_end 1209 v_blanking: 1=
235 v_border: 0

translates into

  ModeLine "1920x1200"  154  1920 1968 2000 2080  1200 1203 1209 1235

and the X server could easily do it automatically.  I've no idea why it
doesn't.  *sigh*  Perhaps the new randr will fix that?

The only problem is that I've no idea where to put the Modeline.
According to man xorg.conf, Modelines are supposed to be placed in the
Monitor section.  But when you use MergedFB, you don't actually have a
Monitor section for the external display.  Will it work if you place the
mode in the Monitor section for the internal display?  I guess the only
way to find out is to try it.

Good luck,
Marius Gedminas
--=20
There are a lotta computer languages out there doing drugs.
		-- Larry Wall

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