From Gnome GUI (on ubuntu 12.0.4 classic not unity) I am able to authenticate from the logon screen: but after starting to load the user workspace, some error occurs - probably in /etc/profile since I have a lot of stuff there - and then we end up right back to the Gnome Login chooser.
When I did CTL-ALT-F1 - which is usually my savior in such circumstances - i get the dreaded "No Signal" on the monitor. Now I am kind of out of ideas how to proceeed.
I just want a single-user shell to go and nuke the /etc/profile (and possibly ~/.bashrc as well). How to get the single user prompt?
Note: this is NOT the same question as Ubuntu Server 12.10 - After entering credentials at login screen, the login screen reappears. Login screen is looping That other one involves win2008/samba/etc. This one is simple ubuntu only.
UPDATE I have reason to believe the issue is simply incompatibility with my monitor. How to boot to VGA?