Sound on RPI Model 4B

[robg]

This thread serves to collect information and address sound problems on the RPI 4B. Recent examples of such problems can be found here and here.

The first of the above-linked issues seems to be due to only superficial support for the vc4hdmi audio driver (see this github issue). As a temporary workaround, output via the vc4hdmi driver is supported by pulseaudio (on graysky's kernel).

[graysky]

Just to be clear, there is no graysky's kernel anymore. The rpi-5.10.y branch is officially Arch ARM's linux-raspberrypi/linux-raspberrypi4 kernel. You might want to take your discussion to the RPi forum. I would keep it simple.

I want to ....
I tried ....

You can mention you're running Arch ARM which is using the 5.10.y branch of kernels as does RPiOS.

[steadybright]

I completed a fresh install of AArch64 on a Raspberry Pi 4B, and then changed to linux-raspberrypi4 kernel.

Analog audio through the jack is working now.

Details here:
https://archlinuxarm.org/forum/viewtopic.php?f=65&t=15128&p=65808#p65816

sb