A computer running Ubuntu have a GeForce video card with two monitors. I need to set up the screen resolution for the second monitor, but xrandr doesn't allow it. The computer detects two screens (0 and 1) instead of one screen with double sized desktop. How do I set up the screen resolution for screen 1? (I don't want to use an extended desktop).
It is a computer running Ubuntu 14.04 LTS with a GeForce GTX 750 1GB ZOTAC video card, with two DVI outputs. I am using xrandr to set the resolution of the second screen. Xrandr tells me that there are two connected screens, screen 0 and 1. Both are connected by a DVI to VGA adapter.
The main screen (screen 0) detects the correct configuration immediately. The secondary screen (screen 1) is fixed at 800x600 or at best, 1024x768, but should be at 1360x768.
I have tried turning the screen off and on and indicating the resolution immediately:
xrandr --screen 1 --output DVI-D-0 --off xrandr --screen 1 --output DVI-D-0 --auto -s 1360x768
But the command completely ignores the setting of the definition. Or, I get an error: Badvalue (integer parameter out of range for operation) Major opcode failed request: 140 (RANDR) Minor opcode failed request: 7 (RRSetScreenSize) Value in failed request: 0x0 Serial number of failed request: 23 Current serial number in output stream: 25
How do I set up the right screen resolution (1360x768) for screen 1?
I want to preserve the configuration of screen 0 and 1. Many Q&A on this website talk about extending desktop on screen 0 (with virtual display or similar procedures, it is like working with one screen with double size), but I really need to preserve the screen 0 and 1 because we are using specific software.
For clarification, if I preserve the configuration I could do the following:
DISPLAY=0.1 xterm &
and xterm will be shown on screen 1. If I use an extended desktop, it will not work.
Any advice will be welcome.