xrandr shows this and I'm not sure I'm reading the "connected" line correctly:
AMD5995:~> xrandr
Screen 0: minimum 8 x 8, current 3520 x 1080, maximum 16384 x 16384
VGA-0 connected 1600x900+1920+0 (normal left inverted right x axis y axis) 0mm x 0mm
   1024x768      60.00 +
   1600x900      59.82* 
   1400x900      59.88  
   1368x768      59.88    59.85
Here the response from the next command:
10:00.0 VGA compatible controller [0300]: NVIDIA Corporation GK208B [GeForce GT 730] [10de:1287] (rev a1)
        Subsystem: eVga.com. Corp. Device [3842:3733]                                                                      
        Kernel driver in use: nvidia                                                                                       
        Kernel modules: nouveau, nvidia_drm, nvidia
It looks right to me... But I'm not a cli type of user...