Resolution Problem

I just installed 11.2, the problem is I cannot change my resolution to 16001000 or 1280800. I am stuck with 19201200 which for my monitor (15.4) needs a magnifier or something and 1024768 looks so bad. I checked NVIDIA Config Facility and again I could only choose the same resolutions. And if I use sax2, wierd things happen (I set to 16001000 but I get 1440soemthing) …
I would appreciate any help … The wierd thing is that this was not the case with 11.1 for me.