When I plug in my second display and activate it in "Displays" I get an "Out of range" error. It says the max desktop size is 1600 by 1600. Does anyone know a fix? I have an AMD/ATI Mobility chipset, and the propriety drivers.
Ok, I've just found a solution. Firstly, enter this command:
You also need to edit your
Afterwards it should look like this
Once you reboot you should be able to use the default display tool or amdcccle to configure it.