[v38] No sound at Raspberry Pi 4 with Hifiberry DAC+

[Partyzifist]

Batocera build version

v38

Your architecture

Raspberry Pi 4

Your Graphic Processor Unit (GPU)

None

Graphical brand

None

Issue description

I have a Hifiberry DAC+ Soundcard at my Raspberry Pi 4. After the update from Batocera 37 to Batocera 38 there is no sound output.

Expected result

No response

Reproduction steps

Updated with the Batocera-Update-Tool

Logs and data

No response

[dmanlfc]

Did you enable the correct overlay in the config.txt file?

[Partyzifist]

Hey, thank you for the answer!

I think I enabled the correct overlay, because in v37 the same overlay worked fine and I changed nothing before or after the update to v38.

The two lines I added (at the initial setup of Batocera) to the config.txt where: force_eeprom_read=0 dtoverlay=hifiberry-dacplus

The soundcard cloud be chosen in the the Batocera-Settings but there is no sound.

[Partyzifist]

Update: Sound on HDMI works perfect Sound on headphonejack works perfect At the systemsettings in Batocera i choose my Hifiberry-soundcard but after a few moments going back to systemsettings Batocera shows batocera alsa_output.platform-soc_sound.stereo-fallback as sound output. You can hear some sound but the background tracks of batocera e. g. are very very slow.

[dmanlfc]

@Partyzifist try the v39 update from my share here: https://drive.google.com/drive/folders/1mGfpALzSkzXRdZPxE3JLnpqBNWPjyx4b?usp=drive_link

[Partyzifist]

I have found out a few more things about my problem. I think the problem is caused by GPIO. I have this slow sound or sometimes no sound at all. When there is slow sound and I kill the process pigpio (killall pigpio) the sound gets a bit faster. The error here is probably similar: https://github.com/batocera-linux/batocera.linux/issues/10438

Are there more processes that do something with GPIO? Then I would try to terminate them as well.

[dmanlfc]

Did you try v39?

[Partyzifist]

The download limit is reached on your Googledrive

[dmanlfc]

I don't have a limit...

[Partyzifist]

ah, now it works. But there are the same issues on v39

[Partyzifist]

If i take a look at the processes of v37 (ps -e), there is no process "pigpio". Maybe another process is also using gpio in v38 and this leads to the slow sound. @dmanlfc Do you know if another process is using the gpio or is there a way to start the system without "pigpiod"?

[dmanlfc]

@ from the terminal or ssh, do - /etc/init.d/S50pigpio stop does that improve the audio?

[Partyzifist]

I think that /etc/init.d/S50pigpio stop does the same as killall pigpio It improves the audio a bit but is still too slow.

Is there a way to start Batocera without pigpio und don't kill the process when the system is ready? If i do /etc/init.d/S50pigpio and restart the system there is still a process called "pigpio"

An additional info: the Batocera startup-video sounds "OK"

[dmanlfc]

rm /etc/init.d/S50pigpio batocera-save-overlay

Then reboot

[Partyzifist]

OK!

rm /etc/init.d/S50pigpio
batocera-save-overlay

solved the problem! Thank you for the help.