AML-S905X-CC (Le Potato) - Overscan Problem

Software
1

I’ve read around some but am uncertain how to solve the overscan problem. (I tried this in ~/.xprofile …

xrandr --output HDMI-1 --transform 1.3,0,-100,0,1.3,-90,0,0,1
xrandr --output HDMI-1 --set underscan on --set “underscan vborder” 20 --set “underscan hborder” 35

but it didn’t work. NOTE: I tried both HDMI-1 and HDMI-2. I did observe a change to the font size, but no impact on the overscan.)

Also, just tried this …

xrandr --output HDMI-1 --transform 1,0,-40,0,1,-25,0,0,1 --panning 3840x2160+40+20
xrandr --output HDMI-1 --fb 3735x2095 --transform 1,0,-50,0,1,-25,0,0,1 --panning 3840x2160+55+40

It had no effect at all (tried both HDMI-1 and HDMI-2).

Then I noticed the Samsung was defaulting to 1920x1080 so I tried this …

xrandr --output HDMI-1 --transform 1,0,-40,0,1,-25,0,0,1 --panning 1920x1080+40+20
xrandr --output HDMI-1 --fb 1815x1015 --transform 1,0,-50,0,1,-25,0,0,1 --panning 1920x1080+55+40

No effect, other than an increased font size.

I’m out of Libre Computer forum-sourced ideas.

Monitor: SAMSUNG 43” QET Series LFD Display with Integrated MagicInfo Lite Player, Crystal 4K Processor and UHD Resolution, 8ms Response Time, 300 nit, Home UI, Built-in Speakers, LH43QETELGCXZA

2

I guess this is not going to work since no one seems to have a solution. (OR, is it possible that the Debian Armbian image here might work? Le potato | Armbian) If not, it will need to be returned. It’s been an adventure to try it in a couple of different applications. (It did work, with some tinkering, for the Amateur Radio APRS app, Graywolf.)