[Trisquel-users] Odd login fail problem

[janeandreas]

I have set up an Asus EEEpc 901 netbook with a broken screen as a retro game  
emulator station connected to a 1366x768 led monitor hooked up via VGA out.I  
have installed Trisquel 5.5, but previously (before being turned into a Sugar  
machine for some nephews) to that it ran whatever the latest Trisquel was in  
2011 (4.x I think). It ran flawlessly then.

The problem is that now after 2 times of successfully logging in, I cannot do  
so anymore. I enter the correct password, and the screen looks like it is  
about to do something, but then I am returned to the login screen again. This  
continues indefinitely and I do not get an "authentication failure" message  
so I know the password is correct. I cannot determine what is causing this.  
My only guess is maybe something to do with the monitor being connected?