Where can i change the resolution in Dietpi 8 for the Odroid N2

Troubleshooting
1

Hello,
I use Dietpi 8.21 and the Odroid N2.
Under dietpi-config / Display Options / Display Resolution I get the message: This option is not available for Odroid N2.
Xrandr reports: Can’t open display.
In the old version Dietpi 6 there was a boot.ini to set the HDMI mode. These is no longer exist.
Does anyone have an idea ?

2

I guess you used a Raspberry Pi before? Because config.txt is available on RPI SBC only

3

Sorry,
it was the boot.ini
Thanks