I have several external displays that I connect to my laptop (800x600, 1660x1050). When I put an application, such as Totem, Pure Data or Eye of Gnome, full screen (via F11) in the external display, ...
I just installed ubuntu 12.04 (command line version) on an old machine (athlon 1,2 GHz, 1GB RAM, [SiS] 65x/M650/740 graphics). When I boot the screen turns black after the BIOS messages. Even grub ...