I’d like to connect a Rock Pi 4 SE to an official Raspberry Pi 7inch display I have lying around.
I’ve read the hardware section https://wiki.radxa.com/Rockpi4/hardware/display, created a microSD card with Debian Bullseye (kernel 4.4, taken from https://wiki.radxa.com/Rockpi4/downloads), confirmed it works with an HDMI monitor and then edited
/boot/hw_intfc.conf as explained.
Unfortunately, the display stays black and nothing happens. I can see the blue light blinking so I guess the kernel is loaded and the board works behind the scenes. What could I be doing wrong?