Starting with nightly version 2025-12-13, I don't get HDMI output after clean installs. LibreELEC-RPi5.aarch64-13.0-nightly-20251210-dd92255.img.gz is the last version that works out of the box. All versions later than that do not output any HDMI. I think Kodi is still running, because I can ping the Pi, and I notice that the Pi reboots after first power on (after resizing the partition, i guess, I'm not certain because I don't have video output).
My setup is a RPi5 connected via HDMI0 (the port closest to the USB-C power port) using an original Raspberry Pi Micro-HDMI to full size HDMI cable. It is connected to a 2016 Samsung KS7000 TV. I suspect this older TV might exhibit this quirky behavior: it may skip EDID handshakes with PCs (it identifies the Raspberry Pi as a PC), but I have not confirmed this yet. I have noticed that if the source is configured as a PC, the TV applies a picture profile that is very restrictive: It disables a lot of the picture settings and forces full HDMI color range, so that is why I suspect the TV to be weird about PC inputs in general.
Sidenote: I am currently trying to find some config.txt option that restores HDMI output but it's cumbersome, since SSH is disabled and I don't know if I can enable it without seeing the GUI. This leaves me with the only option of pulling out the RPi5's power cable, removing the SD card and putting it into my laptop, tweaking the config.txt file, putting the SD card back into the RPi5 and reinserting the power cable. If there is a way to enable SSH by configuring the SD card somehow, I'd love to know.
