Dual screen with docking station using xrandr

DelGurth | Friday, November 23, 2007

A colleague of mine uses the same laptop as I’ve. But he didn’t like the fact that the build-in display is not used when it’s docked in the docking station. He wants to use his laptop LCD as secondary display when he’s at work.

Unfortunately I’m still on Feisty, but once more Prevu came to the rescue. I found a post about the order in which to build the packages to get xrandr 1.2 (the required version to get the thing to work properly).

And then I used this ubuntu forum post to configure my xorg.conf.

I added:
Viewport 1680 0 Virtual 3360 1050

to the “Screen” Section of my xorg.conf (SubSection “Display”), restarted X and could use the following command to get my display to be a second display and not just a clone:

xrandr --output TMDS-1 --right-of LVDS --mode 1680x1050

To switch back to the clone I use:

xrandr --output TMDS-1 --same-as LVDS --mode 1680x1050

Or you can just restart X again.

This was all.

P.s. If anyone knows how you can dock the D830 on Ubuntu while running, please drop a comment. It kinda hangs when I try to do that and the only thing left for me to do is a hard reset.