JP> User menu -> System Settings -> System Info -> Graphics -> Forced Fallback Mode.
That doesn't work for me :)
Even after restarting your gnome session?
JP> Alternatively one can set a fallback or xmonad session with gsettings JP> (which is comparable to the gconf setting to change window manager in gnome2).
Oh, that's not on the wiki, could you explain how to do it?
Well, I think it is better to use "gnome-session --session=xmonad", which I think overrides the dconf org.gnome.desktop.session.session-name key, as discussed. But anyway I thought I would just mention the key here for completeness. $ gsettings get org.gnome.desktop.session session-name 'gnome' $ gsettings set org.gnome.desktop.session session-name xmonad (I think forcing fallback mode as above will set the key to 'gnome-fallback'.) Jens