have you added the parameter to config.txt for enabling HDMI audio?
https://github.com/raspberrypi/linux/bl ... 5838-L5841?
try (for HDMI0)BTW: loading an EDID binary via kernel command line is explained here https://www.raspberrypi.com/documentati ... splay-mode
an example what needs to be added to cmdline.txt would be (for loading an EDID from file and forcing a FHD display to active)from this example 'abwnedid.bin' is the EDID binary which needs to be available from usr/lib/firmware/
https://github.com/raspberrypi/linux/bl ... 5838-L5841?
try (for HDMI0)
Code:
dtoverlay=vc4-kms-v3d-pi4,audioan example what needs to be added to cmdline.txt would be (for loading an EDID from file and forcing a FHD display to active)
Code:
drm.edid_firmware=HDMI-A-1:abwnedid.bin video=HDMI-A-1:1920x1080M@60D vc4.force_hotplug=1 Statistics: Posted by aBUGSworstnightmare — Thu Jan 01, 2026 7:43 am