you can do that purely in software
vc4.force_hotplug=3 will force the hotplug detect to think a display is connected, its a bit field, so 1 is the first port, 2 is the 2nd port, and 3 is both ports
drm.edid_firmware=HDMI-A-1:rubbish.bin will cause linux to look in /lib/firmware (i think) for that file, and parse it as the EDID, so you can fake any resolution of display
both go into cmdline.txt
vc4.force_hotplug=3 will force the hotplug detect to think a display is connected, its a bit field, so 1 is the first port, 2 is the 2nd port, and 3 is both ports
drm.edid_firmware=HDMI-A-1:rubbish.bin will cause linux to look in /lib/firmware (i think) for that file, and parse it as the EDID, so you can fake any resolution of display
both go into cmdline.txt
Statistics: Posted by cleverca22 — Thu Jan 04, 2024 3:53 am