[ltp] Using an external projector with t61 - mirror output

[Martin Aumueller]

Some googling seems to have found the correct source: 
http://myricci.com/index.php?option=com_content&task=view&id=36

I followed the steps described there to modify (i.e. add the 1024x768 mode) 
the edid data that I could dump with nvidia-settings. I used the provided C 
source code in order to do the necessary conversions and used the mentioned 
phoenix windows program for actually adding the mode.

On Wednesday 04 March 2009 23:54:34 Micha Feigin wrote:
> On Tue, 3 Mar 2009 15:27:13 +0100
>
> Martin Aumueller <aumuell@reserv.at> wrote:
> > I got that to work on my 14" T61p (1400x1050) by:
> > - adding the line
> >        option "CustomEDID" "DFP-0:/etc/X11/t61p-edid-augmented.bin"
> >   to my /etc/X11/xorg.conf in the "Device" section
> > - and by putting the attached file into the specified location
>
> Looks to be to the point only it's no good for the t61 with 15.4 inch
> screen. Maximum resolution in there is 1400x1050 and both it's and the
> 1024x768 timings are off so the screen is messed up.
>
> I'll try looking for an appropriate edid file, any idea how you found this
> one?
>
> > I found a tip on how to do that on some ubuntu web page, if I remember
> > correctly. This custom EDID file adds the 1024x768 mode to the list of
> > supported modes.
> >
> > Regards,
> > Martin
> >
> > On Tuesday 03 March 2009 13:29:24 Micha Feigin wrote:
> > > I was trying to use an external projector with my t61 (debian + xfce +
> > > nvidia drivers from their site 180.29).
> > >
> > > Problem is that I couldn't get the laptop and the projector to agree on
> > > a resolution since the external monitor is 4:3 (1024x768) and the
> > > internal monitor doesn't seem to want to do that.
> > >
> > > It's very auckward giving a presentation like this since I need to keep
> > > looking at the screen behind me instead of the machine in front of me.
> > > Is there any way to get the t61 with nvidia to mirror the external
> > > screen at 1024x768?
> > >
> > > (couldn't even get a dual screen to work since the presentation
> > > insisted of going to full screen on the internal monitor)
> > >
> > > Thanks