Hello I have a laptop 15' and was going to use 23' external monitor.
I attached it and they both were working fine. But what I wanted is just to use only one monitor and leave laptop's display to be turned off.
I couldn't find a way to do it and after playing with settings I turned first monitor off hoping that system decides to use the second one as main monitor.
However they both are now showing black.
I am having to detach my second monitor and restart my machine (from another terminal's console)
What I want..is just turn laptops monitor off and use 23' one when it's attached.
I would also be quite happy if you would tell me where does Ubuntu store settings about monitors.
I also would to at least to be able to use two monitors at the same time (i.e revoke my last change)
If you are on 11.04 type
monitor
on unity launcherThen you will see your monitors like this
If you want to turned of the laptop screen and use the external one jsut select the laptop monitor and then click on
Off
radio button. then click onapply
like this:
Now you have only the external monitor.
Update - Replying to the comment below.
You should remove
~/.config/monitors.xml
and try again.I had the same problem and google led me here. I was able to solve the problem by deleting
~/.config/monitors.xml
and then used the display settings to turn laptop monitor off. And it worked.