clicco YES e quindi visualizza un report lungo e complesso che rimanda ad un file di log anch'esso lungo e complesso di cui riporto le prime righe;failed to start the X server (your graphical interface). It is likely that is not set up correctly. Would you like to view the X server output to diagnose the problem?
CHE FACCIO?[ 18.571]
X.Org X Server 1.11.3
Release Date: 2011-12-16
[ 18.571] X Protocol Version 11, Revision 0
[ 18.572] Build Operating System: Linux 2.6.42-34-generic i686 Ubuntu
[ 18.572] Current Operating System: Linux roberto-1015CX 3.2.0-37-generic #58-Ubuntu SMP Thu Jan 24 15:28:57 UTC 2013 i686
[ 18.572] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-3.2.0-37-generic root=UUID=eb6d830d-8792-4205-a6d4-7b6ac5c52833 ro quiet splash vt.handoff=7
[ 18.572] Build Date: 16 January 2013 11:05:18PM
[ 18.572] xorg-server 2:1.11.4-0ubuntu10.11 (For technical support please see http://www.ubuntu.com/support)
[ 18.572] Current version of pixman: 0.24.4
[ 18.572] Before reporting problems, check http://wiki.x.org
to make sure that you have the latest version.
grazie!