Rock64 | 3.5mm audio not working again

[lupa18]

Creating a bug report/issue

Required Information

• DietPi version | 6.33.33
• Distro version | buster
• Kernel version | Linux rock64 5.9.14-rockchip64
• SBC model | ROCK64 (aarch64)

Additional Information (if applicable)

• Software title | drivers
• Can this issue be replicated on a fresh installation of DietPi? YES
• Maybe related to Rock64 | 3.5mm audio jack not working #2522

Steps to reproduce

Try to play some sound

Expected behaviour

Hear sounds

Actual behaviour

Can't hear anything

Extra details

When trying to use aplay with a sound:

aplay ./share/sounds/alsa/Side_Right.wav
Playing WAVE './share/sounds/alsa/Side_Right.wav' : Signed 16 bit Little Endian, Rate 48000 Hz, Mono
aplay: set_params:1345: Channels count non available

[MichaIng]

Many thanks for your report.

This is a known issue when playing sound sources which are not compatible with the sound card/driver. The format needs to be converted. By coincidence, we added a feature with DietPi v6.34 (will be released later today) to enable the ALSA auto-conversion plugin. Please try it out:

cat << '_EOF_' > /etc/asound.conf
pcm.!default {
	type plug
	slave.pcm {
		type hw
		card 0
		device 0
	}
}

ctl.!default {
	type hw
	card 0
}
_EOF_

Please adjust card and device index, if 0,0 is not correct, as probably HDMI sound is on card 0.

[lupa18]

Hi @MichaIng thanks for your answer!

I don't have HDMI connected and I use the audio native jack output.

Yesterday I got MPD working manually adding sound card device (uncommenting a line at mpd.conf) and then doing the same at diepi-config.

But I think the problem is "Auto Detection" feature, is not working at dietpi-config -> "Audio Options" -> "Soundcard". It returns an empty option.

[MichaIng]

Auto-detection is based on ALSA sound card interfaces:

cat  /proc/asound/cards

respectively:

aplay -l

Everything that is listed there should be listed in dietpi-config as well. Was this not the case?

[lupa18]

Ok ! I was confused. I think auto detection will chooose a card for me.

What I did: Choose "auto detection" and it gives me an empty option (screenshot). Then click Ok and nothing working.

It seems that after the empty option I must get inside the option again and choose the correct one.

[MichaIng]

Ah, that line is meant to be a separator only, below are the detected sound cards + "usb-dac", which will enable the first found USB DAC.

Indeed it should not be possible to pass an empty value, hence this will cause an error now in the underlying script: 7e1f6b6

And our whiptail menu wrapper will now stay in the menu when such a separator line was selected: 62903e2
This allows some other code simplifications as well as we currently often explicitly check for a non-empty output. So that one was overdue anyway 😃.