in a LCD samsung syncmaster 192N
In software mode is all daisies. But in OpenGL mode... things change.
In windowed mode, any resolution works fine, with no glitches and similar. But when I go fullscreen mode or I get "Screen resolution not supported" or I got today this morning a really scary monitor crash. It turned all white with colored vertical stripes all over the place! I thoght I burned my LCD screen!! I rebooted my pc and all came back to place (thank god).
I attached a crappy paint brush recriation of the werid scary monitor error, for curiosity porposes

So, why in the name of god fullscreen does not work!?