- Install Compiz Advanced Desktop Setting;
- Open it and go to "General Options", then "Display Settings";
- Uncheck "Detect Outputs";
- In "Ouputs", edit the resolution (mine was set at 800x600x0x0) to your external display's resolution (mine is now 1050x1680).
solution from <http:// ubuntuforums. org/showthread. php?t=582551& page=2> (I haven't tested it):
"Problem solved. Here's how to:
- Install Compiz Advanced Desktop Setting;
- Open it and go to "General Options", then "Display Settings";
- Uncheck "Detect Outputs";
- In "Ouputs", edit the resolution (mine was set at 800x600x0x0) to your external display's resolution (mine is now 1050x1680).
This should solve the problem."