Diet Pi, Roon Bridge, HQP and iFi Nano

Wayne_Bull1 · December 28, 2016, 4:53pm

Just reset everything and now get sound via Roon Ready but nothing still via HQPlayer…Bizarre!

I’ll try disabling Roon Ready as suggeested.

Dan_Knight · December 28, 2016, 5:03pm

Strange. Really doesnt make any sense. Modules appear to be loaded for the USB card.

Playback open error: -16,Device or resource busy

Just bear in mind, as Roon and HQPlayer target specific cards, and, only 1 ALSA stream can be active at any time on a card, you’ll need to stop Roon playback (possibly even exit it), before playing from HQPlayer. Same for visaversa.

I’ll setup a test system, see if we can try and debug this further.

Wayne_Bull1 · December 28, 2016, 5:04pm

Cheers Dan, appreciated

Dan_Knight · December 28, 2016, 5:51pm

Ok, i’ve got a cheap china-town USB dac, try the following:

Disable onboard rpi card/modules, frees up some memory:
/DietPi/dietpi/func/dietpi-set_hardware soundcard none

We also need to enable dtparam=audio=on, for any soundcard on RPi:
sed -i '/dtparam=audio=/c\dtparam=audio=on' /DietPi/config.txt

Reboot:
reboot

Set asound.conf (click link to view all, then copy and paste all into SSH term)
http://pastebin.com/3RdmpAfZ

Run basic sound test:
speaker-test -c2 -r 44100

If errors and no sound, try:
speaker-test -c2 -r 44100 -D hw:0,0

Then report back with results and we’ll go on from there.

Wayne_Bull1 · December 28, 2016, 6:04pm

Still no joy Dan…sorry to be a pain

These are the results after reboot

root@DietPi:~# SOUNDCARD_TARGET_CARD=1
}
root@DietPi:~# SOUNDCARD_TARGET_DEVICE=0
root@DietPi:~#
root@DietPi:~# cat << _EOF_ > /etc/asound.conf
> pcm.!default {
>     type hw
>     card $SOUNDCARD_TARGET_CARD
>     device $SOUNDCARD_TARGET_DEVICE
> }
> ctl.!default {
>     type hw
>     card $SOUNDCARD_TARGET_CARD
>     device $SOUNDCARD_TARGET_DEVICE
> }
> _EOF_
root@DietPi:~# speaker-test -c2 -r 44100

speaker-test 1.0.28

Playback device is default
Stream parameters are 44100Hz, S16_LE, 2 channels
Using 16 octaves of pink noise
Sample format not available for playback: Invalid argument
Setting of hwparams failed: Invalid argument
root@DietPi:~# speaker-test -c2 -r 44100 -D hw:0,0

speaker-test 1.0.28

Playback device is hw:0,0
Stream parameters are 44100Hz, S16_LE, 2 channels
Using 16 octaves of pink noise
ALSA lib pcm_hw.c:1667:(_snd_pcm_hw_open) Invalid value for card
Playback open error: -2,No such file or directory

Wayne_Bull1 · December 28, 2016, 6:10pm

HQPayer results

  2016/12/28 18:06:25 networkaudiod Copyright (C) 2011-2016 Jussi Laako / Signalyst. All rights reserved.
  2016/12/28 18:06:25 asoundlib version: 1.0.28
* 2016/12/28 18:06:39 discovery from [::ffff:192.168.0.8]:49252
* 2016/12/28 18:06:39 discovery from [::ffff:192.168.0.8]:49252
+ 2016/12/28 18:06:40 connection from [::ffff:192.168.0.8]:49455
  2016/12/28 18:06:40 Found ALSA device: hw:1,0 - iFi (by AMR) HD USB Audio (DOP2: USB Audio
  2016/12/28 18:06:40 begin disconnection
- 2016/12/28 18:06:40 ALSA backend uninitialized
- 2016/12/28 18:06:40 disconnected [::ffff:192.168.0.8]:49455
+ 2016/12/28 18:06:40 connection from [::ffff:192.168.0.8]:49456
- 2016/12/28 18:06:40 ALSA backend uninitialized
  2016/12/28 18:06:40 Set channels: 2 (2)
  2016/12/28 18:06:40 ALSA device: hw:1,0
  2016/12/28 18:06:40 ALSA access mode: 3
  2016/12/28 18:06:40 ALSA PCM format: S32_LE
  2016/12/28 18:06:40 ALSA PCM bits: 32
  2016/12/28 18:06:40 ALSA PCM physical width: 32
  2016/12/28 18:06:40 ALSA PCM rates: 44100 - 768000
  2016/12/28 18:06:40 ALSA DSD format:
# 2016/12/28 18:06:40 initialization failure: clALSAMiniEngine::Initialize(): snd_pcm_format_physical_width(): Invalid argument
  2016/12/28 18:06:43 begin disconnection
- 2016/12/28 18:06:43 ALSA backend uninitialized
- 2016/12/28 18:06:43 disconnected [::ffff:192.168.0.8]:49456
* 2016/12/28 18:06:43 discovery from [::ffff:192.168.0.8]:55442
* 2016/12/28 18:06:43 discovery from [::ffff:192.168.0.8]:55442
+ 2016/12/28 18:06:44 connection from [::ffff:192.168.0.8]:49457
  2016/12/28 18:06:44 Found ALSA device: hw:1,0 - iFi (by AMR) HD USB Audio (DOP2: USB Audio
  2016/12/28 18:06:44 begin disconnection
- 2016/12/28 18:06:44 ALSA backend uninitialized
- 2016/12/28 18:06:44 disconnected [::ffff:192.168.0.8]:49457

Dan_Knight · December 28, 2016, 6:17pm

Thanks.

Ok, strange, claims it does not support 44.1khz 16bit.

Which nano DAC are you running, does it support 384khz/32bit (http://ifi-audio.com/home/products/nano/)

Wayne_Bull1 · December 28, 2016, 6:18pm

yes that’s the one Dan

Dan_Knight · December 28, 2016, 6:20pm

Ok, lets check supported rates/bit
arecord --dump-hw-params

Wayne_Bull1 · December 28, 2016, 6:23pm

root@DietPi:~# arecord --dump-hw-params
arecord: main:722: audio open error: No such file or directory
root@DietPi:~# root@DietPi:~# arecord --dump-hw-params
-bash: root@DietPi:~#: command not found

Dan_Knight · December 28, 2016, 6:27pm

Ok, lets check everything was applied correctly:
aplay -l cat /DietPi/config.txt | grep dtpara cat /etc/asound.conf

Wayne_Bull1 · December 28, 2016, 6:31pm

root@DietPi:~# aplay -l
**** List of PLAYBACK Hardware Devices ****
card 1: AudioDOP2 [iFi (by AMR) HD USB Audio (DOP2], device 0: USB Audio [USB Audio]
  Subdevices: 0/1
  Subdevice #0: subdevice #0
root@DietPi:~# cat /DietPi/config.txt | grep dtpara
dtparam=audio=on
dtparam=i2c_arm=off
dtparam=i2c1=off
dtparam=spi=off
root@DietPi:~# cat /etc/asound.conf

Wayne_Bull1 · December 28, 2016, 6:32pm

I just connected the ifi directly to the macbook pro Dan and it worked fine, so dac’s ok

Dan_Knight · December 28, 2016, 6:36pm

This is empty, didn’t get applied correctly, possible due to SSH client not handling/sending clipboard correctly.

Lets try adding it in manually again:
nano /etc/asound.conf

Add the following:
pcm.!default { type hw card 1 device 0 } ctl.!default { type hw card 1 device 0 }

Save changes (ctrl+x, y, enter)

Now dump supported formats/bits:
arecord --dump-hw-params

I just connected the ifi directly to the macbook pro Dan and it worked fine, so dac’s ok

Yep, says on their site should work nativily on Linux/Mac. Think if we can find the supported sample rates, should get this fixed pretty quickly.

Wayne_Bull1 · December 28, 2016, 6:39pm

Dan Ive just gone into that file and those lines are showing.

Shall I delete and repaste?

Dan_Knight · December 28, 2016, 6:44pm

Nope they look fine. Bizarre, i think your RPi is possessed lol

Ok, lets try specifying card:
arecord -D hw:1,0 --dump-hw-params

Failing that, not sure what else we can try. But it does appear to be “broken” at basic ALSA level.

Wayne_Bull1 · December 28, 2016, 6:45pm

root@DietPi:~# arecord -D hw:1,0 --dump-hw-params
arecord: main:722: audio open error: No such file or directory

Dan_Knight · December 28, 2016, 6:47pm

Has this USB DAC worked on official Raspbian, just curious if we get the same results?

Wayne_Bull1 · December 28, 2016, 6:48pm

I’ve had it working on Picoreplayer and also Jussi’s NAA image with no problems

Dan_Knight · December 28, 2016, 7:05pm

This really is strange. Everything is setup correctly, it should be functional.
From what ALSA is telling us, its failing to even open a basic audio stream on the DAC.

If you have not tried it already, please try a fresh image and installation of DietPi. Then apply the changes we did here:

Failing that, just wondering if @RBM would be willing to assist us on this, try DietPi on a RPi with his iFi Nano DAC. See if we get same results?