Crop one monitor to subset of physical resolution

Phrogz

11/30/23, 12:29 AM

I have three monitors, all 1920×1200.

I need one monitor (either 2 or 3, above) to use a subset of the pixels, 1624×1092. I need this so that a specific application that launches fullscreen will be exactly that resolution. I don't care where on the monitor this subset is placed; top left is fine.

I've spent an hour chasing down similar questions on various sites, with answers involving xrandr, but don't see anyone declaring victory. I don't have to use xrandr, if there's another solution that works.

The output of xrandr, if it helps:

$ xrandr
Screen 0: minimum 8 x 8, current 5760 x 1200, maximum 32767 x 32767
HDMI-0 disconnected (normal left inverted right x axis y axis)
DP-0 disconnected (normal left inverted right x axis y axis)
DP-1 connected primary 1920x1200+3840+0 (normal left inverted right x axis y axis) 518mm x 324mm
   1920x1200     59.95*+
   1600x1200     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  
DP-2 disconnected (normal left inverted right x axis y axis)
DP-3 connected 1920x1200+0+0 (normal left inverted right x axis y axis) 518mm x 324mm
   1920x1200     59.95*+
   1600x1200     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  
DP-4 disconnected (normal left inverted right x axis y axis)
DP-5 connected 1920x1200+1920+0 (normal left inverted right x axis y axis) 518mm x 324mm
   1920x1200     59.95*+
   1600x1200     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

This is on Ubuntu 20.04

0 + 0

monitor

display-resolution

Elon Musk

I sit in a Tesla and translated this thread with Ai:

EN: Crop one monitor to subset of physical resolution

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