AMD REMBRANDT RADEON [680M] AND OVERSCAN IN MINT22

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This is from IT support here.

We are sharing  this because in the old days (MINT 17) under the Display utility you had an "overscan" slider that would allow you to adjust overscan/underscan.  That appears to be gone.  I reviewed the forums for linuxmint extensively and the issues are locked/closed and nobody has anything definitive.  Lots of very sharp people there  and very generous with their help.

I discovered the xrandr binary and it will allow you to adjust all kinds of things including overscan.  So the first thing I did was get a list of all the goodies in the system with xrandr:

$ xrandr
Screen 0: minimum 320 x 200, current 3840 x 1080, maximum 16384 x 16384
DisplayPort-0 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 609mm x 347mm
   1366x768      59.79 +
   1920x1080     60.00*   50.00    59.94    30.00    25.00    24.00    29.97    23.98  
   1280x720      60.00    50.00    59.94  
   1024x768      75.03    70.07    60.00  
   832x624       74.55  
   800x600       72.19    75.00    60.32  
   720x576       50.00  
   720x480       60.00    59.94  
   640x480       75.00    72.81    66.67    60.00    59.94  
   720x400       70.08  
HDMI-A-0 connected 1920x1080+1920+0 (normal left inverted right x axis y axis) 1600mm x 900mm
   1360x768      60.02 +
   1920x1080     60.00*   59.94    24.00    23.98  
   1280x720      60.00    59.94  
   1024x768      60.00  
   800x600       60.32  
   720x480       60.00    59.94  
   640x480       60.00    59.94  
DisplayPort-1 disconnected (normal left inverted right x axis y axis)
DisplayPort-2 disconnected (normal left inverted right x axis y axis)
DisplayPort-3 disconnected (normal left inverted right x axis y axis)
DisplayPort-4 disconnected (normal left inverted right x axis y axis)
DisplayPort-5 disconnected (normal left inverted right x axis y axis)

That gave me the names of both of my display devices:

1. DisplayPort-0
2. HDMI-A-0

So I applied the same overscan rule to both devices.

I applied both of these rules at the user level and they perfectly solved the overscan issue:

$ xrandr --output HDMI-A-0 --set underscan on --set "underscan vborder" 48 --set "underscan hborder" 84
$ xrandr --output DisplayPort-0 --set underscan on --set "underscan vborder" 48 --set "underscan hborder" 84

I set up a script I could run that would fix this any time it happens (such as a reboot, etc.)

We made this public to try and help other people.

IT Support, Bear Pen Enterprises, LLC