I found Cat 10.6 was unstable on my rig. Cat 10.3/10.4 works best for 5970.
Right click desktop>screen resolution. Check to see that bezel compensated res is selected.
IMO, using bezel compensated res on desktop is annoying. I found the window was hidden behind the bezels making it difficult to read/see.
I use the standard res (5760x1080 in your case) on desktop and change to bezel compensated res in game (under video options).