[ltp] T61 and xrandr

Arian Kuschki linux-thinkpad@linux-thinkpad.org
Sat, 06 Nov 2010 16:00:35 +0100


On Fri, 05 Nov 2010 13:42:13 -0700, John Jason Jordan <johnxj@comcast.net> wrote:
> I'm trying to figure out how to get my main screen to project. Note
> that I am an idiot and have no idea how all this stuff works. Are there
> settings in xrandr to fix which side projects? Or are there better
> tools to use than xrandr? What if I used the proprietary nVidia driver?
> 

I used to use something like this

xrandr --output LVDS --auto --output VGA-0 --auto --same-as LVDS

to clone my laptop display onto an external monitor, it might work for you too.
Maybe you need to replace --output VGA-0 with --output DVI-0 or whatever the
name of the connection is that you use to connect the projector. Executing
xrandr without arguments might show you all your available output devices in
case you are not sure, eg:

a ~$ xrandr
Screen 0: minimum 320 x 200, current 1400 x 1050, maximum 1400 x 1400
VGA-0 disconnected (normal left inverted right x axis y axis)
DVI-0 disconnected (normal left inverted right x axis y axis)
LVDS connected 1400x1050+0+0 (normal left inverted right x axis y axis) 0mm x 0mm
[...]
S-video disconnected (normal left inverted right x axis y axis)