I'm desperately trying to make Gnome Shell work with multiple monitors. I'm on Gentoo. I'm using the proprietary ATI drivers.
I did the configuration with the aticonfig tool.
I tried using Xinemara, but then Gnome Shell starts in Fallback mode only.
I tried without it. In this configuration, I can see both screens, but they seems separated. I cannot move Windows from the first one the second and the window manager of the second seems weird, I cannot close windows on them. When I put the mouse on the second screen, a cross appears as the cursor.
What is the correct way to configure dual monitor for Gnome Shell with ATI drivers ?