can't change Display

[htdavidht]

Monitor is a Dell E773s

This computer had win7 before, the display/aspect ratio size of it looked fine. I enter the BIOS and it look fine, I don't think it is cable problem.

I really appreciate you are helping me trough this.

I am attaching the report file.

[attachment deleted by admin, more than 25 days old]

[gold_finger]

I'm not sure what answer is on this.  Maybe someone else knows.

Post back with exact monitor model that you are using.  Also, go to Menu -> System -> Create System Report and attach the report it generates to your post for people to look at.  Maybe there will be a clue to the problem in the report.

Only other thing I can think of is maybe the cord being used from monitor to computer is faulty.  If it is the kind that is not permanently attached to the monitor, maybe you could try a spare cord to connect with to see if that is the problem.  (I've had a bad monitor cord myself that caused strange problems.)

[htdavidht]

I am not connecting trough one of those.

It is connecting directly to the PC. It have the video card that comes with the mother board so no extra video card, also.

TY.

[gold_finger]

Are you by any chance using a KVM switch or adapter on the connection from monitor to computer?  Sometimes those prevent the proper reading of information about the monitor and cause issues like that.  Try connecting directly to computer instead and see if problem disappears.

[htdavidht]

A big portion of the screen is black and i can't use it. The display window have only 1 option on it and can't edit it.

After some google search, found a command that maybe can help but it is not helping here the results of that command, what can i do?

home1@home1-CDC-M:~$ xrandr
xrandr: Failed to get size of gamma for output default
Screen 0: minimum 1024 x 576, current 1024 x 576, maximum 1024 x 576
default connected 1024x576+0+0 0mm x 0mm
   1024x576        0.0*