I got dual monitor setup, configuration is like this: xrandr --output HDMI-0 --above LVDS And Unity 3D became irratatingly slow. For example character appears only 1 second after I key in them. ...
I'm using Ubuntu 12.04 with a dual monitor setup. The Workspace is spread between the monitors in Xinerama mode, not mirror. Now, the top panel is present on both the monitors. It's simply doubled. ...