[ltp] External monitor

[funkydoctor]

Hi,

FWIW, I had a similar problem, and the "solution" was that I got my =
external
monitor/beamer working only if I chose a resolution of 1024x768 in =
xorg.conf
(not lower, not higher). Also, at this resolution Fn-F7 worked fine. =
Still
haven't figured out why, but it might be worth a try...

Best,
Hans




-----Original Message-----
From: linux-thinkpad-admin@linux-thinkpad.org
[mailto:linux-thinkpad-admin@linux-thinkpad.org] On Behalf Of =
credito@gmx.de
Sent: den 29 november 2006 19:41
To: linux-thinkpad@linux-thinkpad.org
Subject: Re: [ltp] External monitor


Hi,=20

thank you all for your assistance. Unfortunatley my problem is still not
solved. I tried the various modifcations in the xorg.conf file, I tried =
the
xorg.conf file from marius with the exact same symptoms. There is a =
signal
however the monitor - as the beamer - stays black. I use a recent kernel
(latest from debian unstable 2.6.18.x) which has this framebuffer stuff
activated, linux console during boot has resulution of 800x600 or even
bigger. Could this be related to my problem ? Anyone running such a =
system
without my problem ?

I will try a boot CD in the next days.

Cheers,


Marcel



-------- Original-Nachricht --------
Datum: Wed, 29 Nov 2006 16:51:17 +0200
Von: Marius Gedminas <mgedmin@b4net.lt>
An: linux-thinkpad@linux-thinkpad.org
Betreff: Re: [ltp] External monitor

> On Wed, Nov 29, 2006 at 11:07:48AM +0100, credito@gmx.de wrote:
> > I have a T42 with Debian unstable installed. A while ago I
> > successfully configured my thinkpad to use an external =
monitor/beamer.
> > I haven't used it for a while and after some debian unstable =
upgrades
> > (My guess is the step from xorg 7.0 to 7.1) this feature is broken.=20
> >=20
> > If I boot the thinkpad with external display attached it works fine.
> > But I cannot get the display working once X is running and I attach
> > the external display. Fn-F7 doesn't do the trick. However I noticed
> > that the monitor receives some kind of signal but does not display
> > anything.=20
> >=20
> > Xorg.conf snippet: =20
> >=20
> > Section "Device"
> > 	Identifier	"ATI Technologies, Inc. Radeon Mobility M7 LW
[Radeon
> Mobility 7500]"
> > 	Driver		"ati"
> > 	BusID		"PCI:1:0:0"
> > 	VideoRam	32000
> > 	Option		"UseFBDev"		"false"
> > 	Option      "SWcursor" "true"
> >         Option      "DRIReinit" "true"
> >         Option      "AGPMode" "4"
> >         Option      "BIOSHotkeys" "true"=20
>=20
> Add
>=20
> >         Option      "MergedFB" "true"=20
>=20
> It that still doesn't help, add
>=20
>         Option          "CRT2HSync"     "30-80"
>         Option          "CRT2VRefresh"  "59-75"
>=20
> To get the real hsync/vrefresh ranges, restart X so that it can detect
> the external monitor, then look them up from the EDID info in the
> Xorg.0.log.
>=20
> If you're interested, my xorg.conf is here: =
http://mg.pov.lt/xorg.conf.
> I have the same laptop with the same Radeon 7500 video card.  I also
> often use a dual-head desktop.  I can switch between 1024x768 clone =
mode
> and full dual-head 1024x768+1280x1024 at runtime with
>=20
>   xrandr -s 0
>   xrandr -s 1024x768
>=20
> HTH,
> Marius Gedminas
> --=20
> "Linux: the operating system with a CLUE... Command Line User
> Environment".
> (seen in a posting in comp.software.testing)

--=20
Der GMX SmartSurfer hilft bis zu 70% Ihrer Onlinekosten zu sparen!=20
Ideal f=FCr Modem und ISDN: http://www.gmx.net/de/go/smartsurfer
--=20
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