Can't force the resolution using disp_cap

[cpm]

FYI, you can also load your own EDID - some details on the approach here (basically need a bin edid file and can load into kernel):

EDID Override - Injecting a Dolby VSVDB Block

It needs your EDID as a base, the first tool is for both Mac and PC so should be good if you did not know , it is not hard - better to teach how to fish Do you have the original spreadsheet that png was taken from? Would be useful to have. Steps required: Make sure the Ugoos is connected in your normal setup, projector, receiver etc. without your LLDV converter device. ssh into the Ugoos ssh needs to be enabled for CoreELEC via the settings use terminal on mac to access the u…

And keep it loaded here:

EDID Override - Injecting a Dolby VSVDB Block

Regarding the caveats on hotplugging, I solved this with a udev rule. In .config/udev.rules.d/ I created a file named 99-edid.rules with the following contents: ACTION=="change", SUBSYSTEM=="extcon", ATTR{name}=="hdmitx_extcon_hdmi", ENV{STATE}=="HDMI=1", RUN+="/bin/sh -c \"[ -f '/storage/.config/edid.bin' ] && echo 'load /storage/.config/edid.bin' >/sys${DEVPATH%%/*}/edid\""