Hello guys,
I got myself the Hifiberry DAC2 Pro - as smart as I was; i didn’t check compatibility with volumio before. Or at least I couldn’t make it work with Volumio so far.
Any good hint from experts or information regarding taking this DAC in?
Thanks in advance
Settings >> Playback >>
IS2 DAC ON with your card… and pick your card above 
but there are some problems with that dac…
asla error look here :
Thank you, I had the same error.
IS2 DAC: ON
I2S: Hifiberry DAC Pro+ (DAC2 Pro doesn’t exsist)
After setup (without restart) it plays
After restart, ALSA “hw:2,0”
Only workaround is; change in playback options to the “DAC Pro +” again; save it; start playback.
But I think this is a very unlucky solution right? So I don’t know if volumio yet fully supports this device?
Sorry for double post, I need to add:
Actually it only looks like it would be playing - but reality is no sound.
i don’t have your dac didn’t find a solution yet … hopefully some one has…
There’s a thread on the hifiberry support page that says to use the DAC Pro + driver as it is the same.
Hello, thank you. Yes - i know this thread.
As above described - I tried that. But it doesn’t solve the restart topic. And it doesn’t solve the topic that no sound is comming out after directly setting the DAC up.
Where I can promise you - with moode the DAC works with these settings - only that i don’t like moode.
So I hope things might continue in this thread - i think this is at least where it kind of belongs to.
Bump…
I’m having the same issue. Did anyone manage to solve this?
Dear All,
I posted what works for me on hifiberry community, maybe can help also someone here.
I think there are 2 different issues that are easy to confuse:
1- the headphones jack cannot work in Volumio, SOLUTION: buy a 4€ RCA to jack adapter on Amazon, end of the story.
2- the DAC2Pro with Volumio after reboot doesn’t work anymore with “Alsa HW 2.0” error, SOLUTION: after the first configuration with everything working fine, switch off the pi, edit config.txt and insert command.
force_eeprom_read=0 restart the pi3.
I have a pi3 with DAC2Pro and in that condition finally everything works fine: jingle at boot, the led on the DCA2Pro turn on when playback, volyme control works, now it’s perfect!
I had the same problem with DAC2 Pro. After I edited the /boot/userconfig.txt with
the line above and the line Hifiberry posted in the Details for DAC2 Pro (dtoverlay=hifiberry-dacplus) anything works. Only the volume control is not working. No Problem because my Amp has a remote. 
tomba did you try software volume controle?
i did find this working for the same dac on pi4 …
hi just wanted to say thank you for posting the force_eeprom_read=0 fix that worked!
I have a DAC2 PRO with pi4, 7inch “official” touch in a smartiPI touch pro case
for new people:
-go to volumio.local/dev and enable ssh
-download free tool called putty
-in putty, ssh to volumio.local or IP of your r-pi
-ssh user and password is volumio
-use command cd /boot
-use command sudo nano config.txt
-add the following line anywhere “force_eeprom_read=0” with out quotes
-save, exit
-use command sudo reboot
-in volumio.local > settings> playback options> output device > hifiberry dac plus > CLICK SAVE
Im using rca cable out to my amp > speakers
thanks again!
E
Hi there,
I unfortunately have the same configuration, pi3 and DAC2 Pro.
At the first dac upgrade to the existing installation, it worked fine. Then i felt like a clean install, and now i am not getting it to work anymore.
I really read accross all related forum threads, including hifiberry forum as well.
Basically for “most” people it´s working after adding
“force_eeprom_read=0” (Which is already inside the config.txt at v3.569 / 20.10.2023)
and
“dtoverlay=hifiberry-dacplus” (What is added by volumio every time set to use i2c and hifiberry )
I really tried lots of combinations now, starting from fresh image every time, setting to different dac models and so on.
Do you have any hint what i could have missed?