On my Acer laptop wit ATI Xpress 1100 I have a native resolution of 1280 x 800, and Linux Mint 8 (of the Ubuntu family) offers that resolution without a problem.
However, a few days ago I connected my laptop to my TV, and since then the correct resolution setting has been LOST.
It doesn't appear anymore in the Display settings and so I had to choose a lesser resolution - I am now looking at a less sharp screen!
Probably some kind of configuration file is corrupted, but which one, does anyone know? How can I delete it? I hope that I don't need to reinstall...