I was running 11.04 before upgrading to 11.10 recently and now I am not able to access my account. When I try to login, the console flashes up with some messages on it, then the NVidia logo pops up and then it takes me back to the login screen. I have a Latitude E6500.
I believe the issue stems from here: when using 11.04 I tried to get the cube working on Compiz against others recommendations. Eventually I hosed my CCSM settings and was not able to login to the account anymore without changing to Ubuntu Classic on the login menu. Now that Ubuntu classic is gone in 11.10 I'm only able to login through the guest account (to see a desktop at least, terminal is still fine).
I believe if I can reset my CCSM settings back to default through the terminal while logged into my main account that would fix it. Any ideas?