My problem is:if i try to play ANY game i get a black screen(actually my monitor says there is no signal and turn off) and i keep listening to the music in the back ground, first i thought was a steam problem, because i can do anything(watch youtube and movies full screen and even play some browser games), without a problem with the nvidia driver except play games, but then i tried Strife i launched strife and got the black screen on the login screen! is not even full screen! but i can run the Strife updatemanager without any problem! But i can play many of the software central games smoothly.
I have a geforce gt 630(I am using a DVI to VGA adapter) and Ubuntu 14.04. I installed the nvidia driver using everyway possible, i tried addional drivers section, i tried using terminal but i still have the same problem, i also tried all the types of option that nvidia offers(binary, legacy, proprietary, open source blabla bla).
If i play using the nouveau driver the game runs normal, but i don’t the best perfomance if i would get using nvidia.
Please i really need help i been have trying everyway possible and looking all over google to find a solution:(