[ltp] t42 and dual-head/mergedfb

Alex Deucher linux-thinkpad@linux-thinkpad.org
Sat, 7 Jan 2006 15:03:09 -0500


On 1/6/06, Sebastian von Swiontek-Brzezinski <svs@talicom.de> wrote:
> Hi Axel,
>
> i attached my xorg.log. I'm still using xorg 6.8.2 and the monitorlayout
> option.
>

what does you the monitorlayout section of your config look like (I
seem to have lost your previous email)?  you log looks fine.  are you
using RightOf or LeftOf, etc.?

Alex

> Sebastian.
>
> Alex Deucher wrote:
> > On 12/30/05, Sebastian von Swiontek-Brzezinski <svs@talicom.de> wrote:
> >> Alex Deucher wrote:
> >>> On 12/29/05, Sebastian von Swiontek-Brzezinski <svs@talicom.de> wrote=
:
> >>>> hi list,
> >>>>
> >>>> i'm owning a t42 (2373-5wg) with an ati radeon 7500 (Radeon Mobility=
 M7
> >>>> LW) with 32MB ram. I tried to connect an external monitor (a 19" tft=
 and
> >>>> a possible resolution of 1280x1024) to expand my screen, not cloning=
. My
> >>>> ThinkPad LCD is able to show 1024x768. At first i tried to use merge=
dfb.
> >>>> It works, but then my thinkpad lcd has a virtual 1280x1024 resolutio=
n
> >>>> and i have to scroll. But i do not like this!!!
> >>> if you are using xorg cvs/6.9/7.0 you can enable the mergedfb
> >>> non-rectangluar option to disable the scrolling in the smaller head.
> >> Okay. Thats a fine thing. I have to look how i can use that
> >> xorg-versions with my opensuse. They are using 6.8. Hmm...
> >>
> >>>> So i tried to use two devices, two monitors and two screens with
> >>>> xinerama. When I start x, my kde is on the right side open and my mo=
use
> >>>> pointer disappers. But the problem is, that the graphic card does no=
t
> >>>> enable the external output and my tft gets no signal.
> >>>>
> >>>> Perhaps the following line of my xorg-log is the reason:
> >>>> (WW) RADEON(0): Failed to detect secondary monitor, MergedFB/Clone m=
ode
> >>>> disabled
> >>> for some reason your second head is not being detected.  you need to
> >>> force it on.
> >> Do you mean the flag, which you described below?
> >>
> >>>> Does anybody knows, how to activate this?
> >>> add this option to your first device section:
> >>> Option "monitorlayout" "LVDS, CRT"
> >> I tried this flag, but it does not matter. It is quite interesting: on
> >> booting my external display shows the same like my thinkpad lcd. But
> >> when my x starts, my external tft loses its signal... When i switch ba=
ck
> >> to a console, my external tft is reconnected and shows the console.
> >>
> >
> > yes, the bios and the x server program the hardware differently.  the
> > X server saves the state of the hardware prior to programming it
> > itself, so when you switch VT's the state gets saved and restored.
> > can you post your Xorg log with the monitorlayout option? something
> > else might pop out.
> >
> > Alex
> >
> >> Cheers,
> >> Sebastian.
> >>
>
>
>