screen overscan

[Herman Hoekstra]

Hello there,
I have found another problem.
My setup:

Monitor Samsung syncmaster 2032mw

Windoze 10 reports 1280x768 60Hz

T95Z plus box
cpu amlogic meson(s912)arm cortex-a53
mali t820 gpu
dtb used:
amlogic/meson-gxm-t95z-plus.dtb
everything works including WIFI.

But I have overscan in the terminal and in de Cinnamon desktop
I am looking for info
https://docs.armbian.com/User-Guide_Advanced-Configuration/
enable a custom screen resolution whitin x.org
for a resolution
when i open a terminal and run xrandr --listmonitors
the result is:
Monitors: 1
0: +HDMI 1920x1080/90+0+0 HDMI-1
then i type cvt 1628080 1768
but the next command allready result in
bash:cvt: command not found
Now i am stuck here
any tips?

Edited 2 hours ago by Herman Hoekstra
forgot monitor