View Full Version : [ubuntu] Behaves like screen is larger than monitor

January 29th, 2009, 04:31 PM
When I start up everything is fine however if the machine is left alone for more than 10 or 15 minutes the display will move to the right and down with the mouse as if it were much larger than the screen however it just moves into black space. I have checked and the resolution is correct so im not sure what is going on. Thanks in advance.

February 8th, 2009, 04:49 AM
Does this occur when your screensaver or monitor shutdown should be triggered?

Disable your screensaver and set the monitor to never shutdown.
Also try running the following in a terminal:

xset s off
xset dpms 0 0 0
xset -dpms

February 10th, 2009, 02:37 AM
The reason why this happens is that on some Ati drivers, triggering DPMS brings secondary displays online. Even if you don't use them.

This leads to weird issues as it tries to span your desktop over a non existant display.

Disabling the extraneous display device in the aticonfig panel will fix it without a reboot.

March 13th, 2009, 06:02 AM
Thanks worked like a charm!