I'm running Feisty on a Dell Optiplex GX280. I recently upgraded the video system with a dual-head Radeon card and two 1680x1050 monitors, and it's almost working fine using Xinerama. The only problem is that the mouse pointer isn't updating its appearance properly when I'm positioned in the secondary (right-hand) monitor. Whatever shape the cursor had in the primary (left-hand) monitor, it keeps that same shape no matter what I'm doing on the right. For example, if the mouse pointer is the default arrow shape when I move it onto the right-hand monitor, it keeps the arrow shape even if it ought to be changing to a pointing finger (for a web link), or a "resize", or a "please wait".
In particular, this makes it very difficult to resize a window on the secondary monitor, because I can't tell when the cursor is in exactly the right position to drag the window border.
Any ideas what might be causing this sort of misbehaviour?
FWIW, I did try using Big-Desktop, but I abandoned that method because it wouldn't give me a combined screen resolution higher than 2048x768 (yecch).
I can confirm this behaviour, using a fresh new installed gutsy system with fglrx and Xinerama enabled.
The mouse pointer does get altered, (e.g. when pointing to the lower right corner of a window, ) but the image used doesn't change.
The coordinates of the cursor's hot spot get altered like it should (e.g. when pointing to the lower right corner of a window), but the image stays the same.
~$ uname -a
Linux knorrie 2.6.22-14-generic #1 SMP Sun Oct 14 23:05:12 GMT 2007 i686 GNU/Linux
~$ dpkg -l | grep fglrx
ii xorg-driver-fglrx 7.1.0-8.