Ubuntu 16.04 настройки экрана не работают

Я не могу изменить какие-либо настройки дисплея. Я использую два монитора. Я хотел повернуть один из моих мониторов... пожалуйста, помогите мне. Я не очень знаком с командой Ubuntu.

$ lshw -C video
WARNING: you should run this program as super-user.
  *-display               
       description: VGA compatible controller
       product: NVIDIA Corporation
       vendor: NVIDIA Corporation
       physical id: 0
       bus info: pci@0000:21:00.0
       version: a1
       width: 64 bits
       clock: 33MHz
       capabilities: vga_controller bus_master cap_list rom
       configuration: driver=nouveau latency=0
       resources: irq:35 memory:b2000000-b2ffffff memory:a0000000-afffffff memory:b0000000-b1ffffff ioport:8000(size=128) memory:b3080000-b30fffff
WARNING: output may be incomplete or inaccurate, you should run this program as super-user.

$ xrandr
Screen 0: minimum 320 x 200, current 3840 x 1080, maximum 16384 x 16384
DP-1 disconnected (normal left inverted right x axis y axis)
DP-2 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 509mm x 286mm
   1920x1080     60.00*+  75.00    50.00    59.94  
   1680x1050     59.88  
   1600x900      60.00  
   1280x1024     75.02    60.02  
   1440x900      59.90  
   1280x800      59.91  
   1280x720      60.00    50.00    59.94  
   1024x768      75.03    60.00  
   800x600       75.00    60.32  
   720x576       50.00  
   720x480       60.00    59.94  
   640x480       75.00    60.00    59.94  
   720x400       70.08  
DP-3 connected 1920x1080+1920+0 (normal left inverted right x axis y axis) 509mm x 286mm
   1920x1080     60.00*+
   1280x1024     75.02    60.02  
   1152x864      75.00  
   1024x768      75.03    60.00  
   800x600       75.00    60.32  
   640x480       75.00    59.94  
   720x400       70.08  
DP-4 disconnected (normal left inverted right x axis y axis)