About two weeks ago my second display has stopped working in his native resolution (1440 x 1050). My first display works fine at 1680 x 1050, and i have no problem with this. But i cannot set 1440 x 1050 on the second, because in monitor's configuration dialog there is only 640 x 480 and 1024 x 768 (at 60 Hz). I was not changing any system configuration. It happend just like that. So what can be problem. I can post here any system information.

Regards.