I recently installed BT5 on my laptop, ASUS U30JC, and i'm stuck with the 1024x768 resolution. I normally have 1366x768. My graphic card is a GeForce 310M
I tried to change it in the Monitor Options, but I only have 1024x768.
I also tried in /usr/share/xresprobe/xorg.conf but didn't work.
If you need any other information ask me, and if you have any clue don't hesitate to tell me !