So, per my last thread, I’ve moved on from using the AV port on the Pi, since apparently the RPi firmware makes Switchres via the AV port impossible. However, I now have a Retrotink 4K, so HDMI is possible. Through what little information I’ve been able to find, setting HDMI Group 1 and HDMI mode 8 in the Pi’s config.txt should give me 240p. This seems to work at boot, however the output seems to switch back to 720p as soon as the Lakka boot logo appears. I would love some guidance on setting up 240p output and CRT Switchres via the HDMI out. Thanks in advance.
As an aside, I’m actually using HDMI group 23, for 288p 50hz PAL, in case that makes a big difference. My retrotink reports a 288p input until the boot sequence begins proper.
Oh, and I’m using a Lakka Nightly build because there’s a bug in the release build that causes a filesystem corruption at first boot on the RPi 4.