NV Quadro and switching output

[luigi.galvani]

Good day,
I have Thinkpad R61 with NV Quadro and need to insert into dock to change the output of LVDS (1680x1050) to DVI (1920x1200). Application nvidia-settings that can, however, the manual switch in this gui is MOST uncomfortable and slow - i need this automaticaly. I would like to use xrandr through script. Unfortunately xrandr does not show (change) any other output, and Fn+F7 doesnt work... Please help me.

[Big P]

Originally Posted by luigi.galvani

I would like to use xrandr through script.

You can script nvidia-settings to do it. Have a look at the --assign switch.

[tolonuga]

Can you give an example please?
I found three issues:
* how to trigger "detect display" button effect?
* "EnabledDisplays" seems to be the value we want to change,
but it is read only.
* the nvidia-settings gui changes the resolution if I enable VGA
and disable the LCD and vice versa. it picks the native resolution
of the new screen. how to do that automatically?

Regards, Andreas

[tolonuga]

I wrote a small tool in C using the nvcontrol API
and published the source and makefile here:

https://bugs.launchpad.net/ubuntu/+bug/263887

it will simply switch output. no way back, no confirmation
dialog or anything. I hope nvidia can add some "--switch-output"
flag to nvidia-settings, so we don't need such extra tools in
the future.