Error failed to open alsa device "hw:2,0" : no such file or directory

[DaniA]

Hi everyone,
i just built my first Volumio based system.
I started with a Labits Raspberry Pi 4 model B Kit and an HifiBerry Dac+ Pro, downloaded Volumio latest version, flashed the card and …
The system is working fine as i play music (form an USB card) choosing headphones as output.
The problem comes enabling I2S DAC.
I enabled / disabled DAC many times, powered off / rebooted system but nothing, the issue is still the same.
As i click “play” on a song i got the same error message.
Thanks in advance for help!

Volumio Information

Volumio Version: 2.882
Hardware: Raspberry Pi 4 Model B
DAC: HifiBerry DAC+ Pro

[dknk]

This is a typical, if not all that clear of a message you got. Basically, wrong dac selected in the list or a not supported dac and there is nothing for alsa to output to.

Try the generic Hifiberry dac in the drop down list.

New to Volumio. No sound yet! Failed to open"alsa"[alsa]; Failed to open ALSA device "hw:2,0"; No such file or directory

Further to all these responses. It has started working. As suggested else where in the forum I selected the generic HiFiBerry DAC and not I2S. Having previously tried to get audio from the Pi via HDMI 1 to a TV (which allowed me to also watch the very fast boot routine), I then saw a green LED light up on the DAC board (which had not lit before). There was still no sound but Volumio was not reporting any HW or ALSA errors. I then tried HiFiBerry DAC and not I2S, the LED on the DAC board went ou…

[DaniA]

I tried choosing different Hifiberry models from the list and even generic I2S DAC.
No way, still getting the same error

[dvo]

take a other version…2.882 seems to have a lot of errors… try the 3.xx version

Volumio 3 Buster Beta for RPi

Please use this topic to discuss errors, missing components or improvement suggestions during the Volumio 3 Buster beta test phase for Raspberry Pi. In this opening and first following post we will keep a list of beta versions, fixes, known problems and important updates. Please also refer to the general issues for Volumio 3 Buster issues, which are not platform-specific. This thread will be moderated actively. With issues, which do not appear to be RPi or Debian Buster related, you will be r…

[dheijl]

Works fine here: Pi4 4B 2GB, HifiBerry Dac+ Pro, Volumio version 2.882:

[DaniA]

Faulty DAC?

[dheijl]

Are the DAC pins properly seated in the Pi header? Is the power supply a 3A one?

[DaniA]

The Pi and DAC are well boxer inside an Hifiberry steel case.
The Power supply is 0.5A Max …

[dvo]

ain’t you under powered ? i agree with @dheijl 3 amp is what u need.

[dheijl]

0.5 A : this can’t be right, but if so, where did you get this power supply? The bare Pi alone needs 0.6 A :

Teach, Learn, and Make with Raspberry Pi

[DaniA]

The Power supply was included in the Labits kit, here Is an

image

[chsims1]

That is 3A OUTput

[dvo]

lol he was telling the wrong info your right it’s: 5.0v / 3amp /15 watt

[DaniA]

Sorry guys, so the PS Is ok, what else should i check?

[dvo]

yess, tell us what you tried and post a log file with that we could figger out what’s happening…
http://volumio.local/dev
Send Log or bug report first, say what the problem is after that press send,
and post the link you get here.

try to set it like dheijl has posted:
under: settings >> Playback options >>
i2s dac ON , and select HIFIBerry DAC+ Pro
and save

[DaniA]

Here is the link to log file, thank you very much for help guys!
http://logs.volumio.org/volumio/opQibhW.html

[dvo]

did you set the settings in play options … i don’t see your hifiberry…

[dheijl]

It looks like the hifiberry is not detected…

[dknk]

One thing I would try is to flash a fresh image of Volumio on a different SD card, then redo the setup. If you don’t have another SD card, do a reflash and start again on your current SD card.

And, I would also make sure the dac is installed firmly onto the pi.

[DaniA]

Hey guys i finally fixed It!!! Volumio Is up and running with DAC properly working
The problema was incorrect connection within Pi and DAC.
Not my fault, the Hifiberry steel case had the two componente not to stay properly aligned so only half of the pins were connected …

Thanks everyone for help and … Pay attention to this case, had to fix It with brute force!