Boot Issue: No HDMI Output on Raspberry Pi Zero 2 W (CM0) with eMMC - Lakka RPi3 Images #2140
Description
I am experiencing a boot issue with Lakka on a Raspberry Pi Zero 2 W and would like to confirm hardware compatibility and seek guidance for troubleshooting.
My Hardware Setup:
Board: Raspberry Pi Zero 2 W (which uses a BCM2710A1 chip, similar to the Pi 3, but in a smaller form factor).
Storage: An eMMC module (via an adapter) instead of an SD card. Only eMMC, no SD card slot.
Display: Connected via the HDMI port.
What I've Tested & The Problem:
Other OSes Work Fine: Both Raspberry Pi OS Lite and DietPi boot and display correctly on this exact hardware setup. This confirms that the eMMC storage, HDMI connection, and the Pi itself are functional.
Lakka Does Not Boot: I have tried two official Lakka images:
Lakka-RPi3.aarch64-6.x.img.gz (Latest nightly)
Lakka-RPi3.aarch64-5.0.img.gz (Stable release)
Result: After writing the image to the eMMC, the Pi powers on but I get no signal on my HDMI display. The system appears to halt very early in the boot process.
My Core Questions:
Official Support: Does the official Lakka project explicitly support the Raspberry Pi Zero 2 W, especially when used with eMMC storage? The documentation primarily lists "RPi2 / RPi3 / RPi4". I am aware the Zero 2 W shares the Pi 3's 64-bit architecture, but I'm unsure if the device tree and kernel configuration are fully compatible.
Troubleshooting Steps: If it should work, what are the recommended steps to diagnose this "no HDMI output" issue?
Is there a specific config.txt setting I should try? (e.g., forcing HDMI mode, modifying the device tree).
Are there any boot logs that can be captured via UART/serial console? If so, what are the pinouts and settings for the Zero 2 W?
Could the issue be related to using eMMC storage instead of a traditional SD card?
Custom Builds: If the Zero 2 W is not officially supported, is it feasible to create a custom build for it? I am willing to build from source if pointed to the necessary configuration files (device tree, kernel config, etc.) that would need modification.
Any insight from the developers or community members who have attempted a similar setup would be greatly appreciated. Thank you for your time and for maintaining this excellent project.
Additional Information:
I have verified the integrity of the downloaded Lakka images.
I use the Raspberry Pi Imager for writing the images.