@Jake Lo: Thanks for the fix, it did the trick. However, a VGA screen to a a HDMI to VGA adapter doesn't work for me... Even with your last config.list you gave to tobefriend. I honestly suspect a faulty adapter, it works well only under Linux... I'll try directly on my TV on HDMI only when I'll have time.
@Wow-man: I had the same troubles, and I followed all the steps (well, more or less) that tobefriend followed a few pages from here and it works perfectly now. You can try those if you want.