I have an AMD X6 desktop with plenty of RAM and a dual LG monitors driven by a Radeon HD 5830. The monitors are on DVI ports. AMD Catalyst Version 11.11. Tear free is on. Sync to V-black in ccsm, is disabled.
Multi monitor works OK, I have no problems dragging applications, working seemless between the two monitors, no instability issues whatsoever.
However, the whole experience with dual monitors is a bit sluggish. Window maximizing and minimizing feels slow, effects feel slower, the whole desktop experience feels other than on a single monitor.
Is this an Ubuntu issue or a GPU issue? Is there something to do to improve the overall experience? Will 12.04 improve on these issues? Thanks