I just found out that this happens only after I log out of gnome and back in
again, or if I reset the X server using control+alt+backspace.
After a full restart, the system behaves normally. gnome settings still show
the non-existent screen, but the mouse pointer cannot wander into its
I just found out that this happens only after I log out of gnome and back in
again, or if I reset the X server using control+alt+backspace.
After a full restart, the system behaves normally. gnome settings still show
the non-existent screen, but the mouse pointer cannot wander into its
