Comment 11 for bug 141248

Hi
I just wanna draw some attention on this "Screen and Graphics Preferences" issue.

Yesterday I went back to play a little with the settings. Unfortunately, I managed to make my computer unable to boot just by selecting Screen 2 as default.
After I made the change, I logged out but the welcome screen didn't show up. Instead I only had a black screen with a small prompter in the upper left corner. I can't go to a terminal screen (pressing Ctrl+Alt+F1), I can't do anything, although the keyboard is not dead (caps lock led works correctly).

I know this is not a support forum, but I would really appreciate it if someone could tell me what file "Screen and Graphics Preferences" edits, and if it's not trivial, what should I change in it to get my system back.

Thanks.