If you have correctly added "vc4.force_hotplug=1" firefox really shouldn't know you have powered off the TV.I find that Firefox's Full Screen mode (View >> Full Screen) is lost when I turn my TV off and on. The webpage is still displayed, but not in Full Screen mode.
I have added vc4.force_hotplug=1 to /boot/firmware/cmdline.txt using Nano, but this doesn't seem to have solved it.
Can you post url from "raspinfo | pastebinit" so I can check it's correctly in place.
Statistics: Posted by dom — Tue Aug 05, 2025 10:27 am