Required Information
- DietPi version:
G_DIETPI_VERSION_CORE=8
G_DIETPI_VERSION_SUB=18
G_DIETPI_VERSION_RC=2
G_GITBRANCH='master'
G_GITOWNER='MichaIng'
G_LIVE_PATCH_STATUS[0]='not applicable'
- Distro version: bookworm 0
- Kernel version: 6.1.21-v8+
- Architecture: arm64
- SBC model: RPi 4 Model B (aarch64)
- Power supply used: Official Rpi4
PROBLEM DESCRIPTION
No sound over HDMI.
I am using the KMS video stack, which means in config.txt I have:
dtoverlay=vc4-kms-v3d
I can see these devices available:
root@dietpi:~# aplay -L
null
Discard all samples (playback) or generate zero samples (capture)
sysdefault
Default Audio Device
hw:CARD=vc4hdmi0,DEV=0
vc4-hdmi-0, MAI PCM i2s-hifi-0
Direct hardware device without any conversions
plughw:CARD=vc4hdmi0,DEV=0
vc4-hdmi-0, MAI PCM i2s-hifi-0
Hardware device with all software conversions
sysdefault:CARD=vc4hdmi0
vc4-hdmi-0, MAI PCM i2s-hifi-0
Default Audio Device
hdmi:CARD=vc4hdmi0,DEV=0
vc4-hdmi-0, MAI PCM i2s-hifi-0
HDMI Audio Output
dmix:CARD=vc4hdmi0,DEV=0
vc4-hdmi-0, MAI PCM i2s-hifi-0
Direct sample mixing device
hw:CARD=vc4hdmi1,DEV=0
vc4-hdmi-1, MAI PCM i2s-hifi-0
Direct hardware device without any conversions
plughw:CARD=vc4hdmi1,DEV=0
vc4-hdmi-1, MAI PCM i2s-hifi-0
Hardware device with all software conversions
sysdefault:CARD=vc4hdmi1
vc4-hdmi-1, MAI PCM i2s-hifi-0
Default Audio Device
hdmi:CARD=vc4hdmi1,DEV=0
vc4-hdmi-1, MAI PCM i2s-hifi-0
HDMI Audio Output
dmix:CARD=vc4hdmi1,DEV=0
vc4-hdmi-1, MAI PCM i2s-hifi-0
Direct sample mixing device
Also, in dietpi-config I have:
Sound card : [rpi-bcm2835-hdmi-plug]
Auto-conversion : [On] Automatic software conversions
…which results on this /etc/asound.conf:
pcm.!default {
type plug
slave.pcm {
type hw
card 0
device 0
}
}
ctl.!default {
type hw
card 0
}
With speaker-test, I can manually do this and there is sound:
speaker-test -Dsysdefault
…But since programs try to use ALSA Default instead of Sysdefault, sound only works in speaker-test.
EDIT: Deleting /etc/asound.conf, audio works normally.
So there is a problem with the dietpi-config generated /etc/asound.conf