[ltp] Switching video output on a T23 (again)

[Alex Deucher]

On Wed, Mar 4, 2009 at 8:51 AM, Alexander Reichle-Schmehl
<alexander@schmehl.info> wrote:
> Hi!
>
> I recently got a Thinkpad T23 with SXGA display and the integrated S3 Inc=
.
> SuperSavage IX/C SDR (rev 05). =A0So far it works very well, but it seems=
 I'm
> suffering the very same problems already discussed here in the past (see
> e.g. [1]): =A0Switching between external CRT and internal LCD works, enab=
ling
> both does not :(
>
> I tried it via 'echo "..." > /proc/acpi/...' as well as via s3switch
> (patched for t23 as described in [2]).
>
> But from what I read, the situation is still, that this hardware
> constellation is not supported? =A0Is there anything I can do to help? =
=A0I
> would really like to see the stuff I'm talking about during a presentatio=
n ;)

The bios doesn't support that combination with SXGA.  You'd need to
either enable dualhead in the xorg savage driver, or even better, port
the savage driver to support xrandr 1.2.  It shouldn't be too big a
job since the dualhead code is already in place, just need to add in
the xrandr 1.2 bits and restructure things a bit.

Alex