Unable to play Spotify to USB DAC (Audiolab)

malachy

Running Runeaudio on a Rasp Pi2 and enjoying streaming from a library with mixed formats to an Audiolab MDAC over USB and it works great

But if I connect to Spotify account I can only play on the Pi's standard analog audio out, if I try setting the MDAC as dest it won't play a thing or make a sound. I've logged on and checked the spopd.log and it shows an error:

2016-02-23 19:48:04 [SPTF] 18:48:04.616 I [user_cache:135] UserCache::initiateGetUsers() will query for 3 users
2016-02-23 19:48:05 [SPTF] 18:48:05.203 E [ap:4172] ChannelError(1, 1, link-tracks)
2016-02-23 19:48:05 [SPTF] 18:48:05.392 E [ap:4172] ChannelError(0, 1, link-tracks)
2016-02-23 19:48:05 [SPTF] 18:48:05.605 E [ap:4172] ChannelError(0, 1, link-tracks)
2016-02-23 19:48:05 [SPTF] 18:48:05.801 E [ap:4172] ChannelError(0, 1, link-tracks)
2016-02-23 19:48:14 [SPTF] 18:48:14.027 I [offline-mgr:2032] 0 files are locked. 0 images are locked
2016-02-23 19:48:14 [SPTF] 18:48:14.028 I [offline-mgr:2058] 0 files unlocked. 0 images unlocked
2016-02-23 19:48:17 [ERR ] Error while opening libao device: Cannot open the device

So it looks like it cannot get access to the MDAC, I'm not sure why. Any help would be appreciated e.g. where to look for errors etc.

I have run the git stash and upgrade to get to current version and reboot but still the same.

Full debug output is at http://pastebin.com/SP0G62Te

hondagx35

Hi malachy,

please post the output from:

cat /etc/libao.conf

Should look like this:

[root@runeaudio ~]# cat /etc/libao.conf
default_driver=alsa
use_mmap=no
dev=hw:1,0

Frank

malachy

Hi Frank,

Yes, it looks exactly like that:

[root@runeaudio ~]# cat /etc/libao.conf
default_driver=alsa
use_mmap=no
dev=hw:1,0
[root@runeaudio ~]#

I was also able to test playback over HDMI; that also works OK, just the USB on MDAC that is tricky.

hondagx35

Hi malachy,

please try to change the settings like this:

default_driver=alsa
use_mmap=no
dev=plughw:1,0

Frank

malachy

Hi Frank,

Thanks for that, unfortunately it stays the same for USB, I see the same error as before in spopd.log. It'll be tomorrow before I can try anything else although I think Spotify over HDMI sounds fine.

Regards,

Malachy

hondagx35

Hi Malachy,

although I think Spotify over HDMI sounds fine.

OK, but it has to work also with USB.

Frank

malachy

hondagx35 wrote OK, but it has to work also with USB.

Sure, I'm happy to help debug this, hopefully it'll be a simple fix.

Malachy

malachy

Good news!

I was able to resolve this by simply commenting out the 'output_name' in spopd.conf so it is now:

### Audio settings ###
audio_output = ao
#output_name = hw:0

Simply leave the alsa driver select the default. I've left the setting in libao.conf as you recommended so it has plughw specified. Some useful explanations of spopd.conf at https://github.com/Schnouki/spop/blob/master/spopd.conf.sample

Ovr

I'm having the same problem, but in the .conf file the line you have commented out doesn't exist

uppsalanet

Same here "/etc/spop/spopd.conf" dont have

#output_name = hw:0

### Audio settings ###
audio_output = ao
high_bitrate = true
offline_high_bitrate = true

/Fredrik

Max M

Hi Frank,

I have the same problem. I installed spotify connect, I can see the Raspi on my phone as device, but audio out is on the analog output and not on the USB DAC. In rune audio out to the USB DAC works. I tried to modify the spod.conf file and the libao.conf. This is how they look like now:

libao.conf

default_driver=alsa
use_mmap=no
dev=plughw:1,0

spopd.conf

### Audio settings ###
audio_output = ao
high_bitrate = true
offline_high_bitrate = true

### Cache settings ###
#cache_size = 0
cache_path = /tmp/spop
settings_path = /tmp/spop

### Network settings ###
#listen_address = 127.0.0.1
#listen_port = 6602
## proxy_config
#proxy=http://proxy.lan:3128
#proxy_username=
#proxy_password=

### System settings ###
log_file = /var/log/runeaudio/spopd.log
#plugins = scrobble

[scrobble]
# API endpoint of the scrobbling service you're using.
# - Last.FM: http://post.audioscrobbler.com:80/
# - Libre.FM: http://turtle.libre.fm/
api_endpoint = http://post.audioscrobbler.com:80/
#username = user

[notify]
# Enable or disable notification images. Enabled by default.
#use_images = true

# Size of images in notifications. libspotify provides 300x300 images, which is
# probably too much for most people, so the default value is 120x120.
image_size = 120

[sox]
# Output type for SoX output. Common values: alsa, oss, coreaudio (MacOS X),
# pulseaudio, etc. Can be a file type: wav, mp3, ogg, etc. See `man soxformat'
# for details.
output_type = alsa

# Output name. Common values: default (for alsa, coreaudio, pulseaudio), hw:0
# (alsa), /dev/dsp (oss), etc. This can also be left empty to use the default
# value of the device driver. Can also be a file name: output.ogg, etc. See `man
# soxformat' for details.
output_name = default

# List of effets to apply to the audio output, with their parameters. See `man
# soxeffects' for details.
#effects = gain -3; pad 0 3; reverb

[oss]
# Device to use for OSS output. Default is /dev/dsp
#device = /dev/dsp
#password = pass

Any tips, which settings I need to change. Just to let you know: I am a Raspberry Pi newbie.

Thanks for your help, Max

Max M

And my some of my debug info for Rune Audio rpi2_rp3_0.4-beta_20160321:

        
###### System info ######
Linux version 4.1.20-1-ARCH (builduser@leming) (gcc version 5.3.0 (GCC) ) #1 SMP Sat Mar 19 20:07:23 MDT 2016

system time:	Mon Feb 22 15:40:29 CET 2016

system load:	0.85 0.19 0.06 1/168 823

HW platform:	RaspberryPi2 (08)

playerID:	08b26fff2ac4ddac6fee7fbbc1890504ae




###### Audio backend ######
Advanced Linux Sound Architecture Driver Version k4.1.20-1-ARCH.

Card list: (/proc/asound/cards)
--------------------------------------------------
 0 [ALSA           ]: bcm2835 - bcm2835 ALSA
                      bcm2835 ALSA
 1 [DAC            ]: USB-Audio - USB Audio DAC
                      Burr-Brown from TI USB Audio DAC at usb-3f980000.usb-1.2, full speed


PLAYBACK devices: (aplay -l)
--------------------------------------------------
**** List of PLAYBACK Hardware Devices ****
card 0: ALSA [bcm2835 ALSA], device 0: bcm2835 ALSA [bcm2835 ALSA]
  Subdevices: 7/8
  Subdevice #0: subdevice #0
  Subdevice #1: subdevice #1
  Subdevice #2: subdevice #2
  Subdevice #3: subdevice #3
  Subdevice #4: subdevice #4
  Subdevice #5: subdevice #5
  Subdevice #6: subdevice #6
  Subdevice #7: subdevice #7
card 0: ALSA [bcm2835 ALSA], device 1: bcm2835 ALSA [bcm2835 IEC958/HDMI]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: DAC [USB Audio DAC], device 0: USB Audio [USB Audio]
  Subdevices: 1/1
  Subdevice #0: subdevice #0


PCM devices: (aplay -L)
--------------------------------------------------
null
    Discard all samples (playback) or generate zero samples (capture)
default:CARD=ALSA
    bcm2835 ALSA, bcm2835 ALSA
    Default Audio Device
sysdefault:CARD=ALSA
    bcm2835 ALSA, bcm2835 ALSA
    Default Audio Device
default:CARD=DAC
    USB Audio DAC, USB Audio
    Default Audio Device
sysdefault:CARD=DAC
    USB Audio DAC, USB Audio
    Default Audio Device
front:CARD=DAC,DEV=0
    USB Audio DAC, USB Audio
    Front speakers
surround21:CARD=DAC,DEV=0
    USB Audio DAC, USB Audio
    2.1 Surround output to Front and Subwoofer speakers
surround40:CARD=DAC,DEV=0
    USB Audio DAC, USB Audio
    4.0 Surround output to Front and Rear speakers
surround41:CARD=DAC,DEV=0
    USB Audio DAC, USB Audio
    4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=DAC,DEV=0
    USB Audio DAC, USB Audio
    5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=DAC,DEV=0
    USB Audio DAC, USB Audio
    5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=DAC,DEV=0
    USB Audio DAC, USB Audio
    7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
iec958:CARD=DAC,DEV=0
    USB Audio DAC, USB Audio
    IEC958 (S/PDIF) Digital Audio Output


Simple mixer controls: (amixer scontrols)
--------------------------------------------------
card 0:
Simple mixer control 'PCM',0

card 1:
Simple mixer control 'PCM',0


Mixer controls: (amixer controls)
--------------------------------------------------
card 0:
numid=3,iface=MIXER,name='PCM Playback Route'
numid=2,iface=MIXER,name='PCM Playback Switch'
numid=1,iface=MIXER,name='PCM Playback Volume'
numid=5,iface=PCM,name='IEC958 Playback Con Mask'
numid=4,iface=PCM,name='IEC958 Playback Default'

card 1:
numid=2,iface=MIXER,name='PCM Playback Switch'
numid=3,iface=MIXER,name='PCM Playback Volume'
numid=1,iface=PCM,name='Playback Channel Map'


MPD audio outputs status: (mpc outputs)
--------------------------------------------------
Output 1 (bcm2835 ALSA_1) is disabled
Output 2 (USB Audio DAC) is enabled
Output 3 (bcm2835 ALSA_2) is disabled

###### mpd version ######
mpd version: 0.19.0

###### mpd.conf ######
###################################
# Auto generated mpd.conf file
# please DO NOT edit it manually!
# Use RuneUI MPD config section
###################################

log_level	"default"
log_file	"/var/log/runeaudio/mpd.log"
state_file	"/var/lib/mpd/mpdstate"
zeroconf_enabled 	"yes"
zeroconf_name 	"runeaudio"
bind_to_address "/run/mpd.sock"
bind_to_address 	"any"
port 	"6600"
max_connections 	"20"
user 	"mpd"
group 	"audio"
db_file 	"/var/lib/mpd/mpd.db"
sticker_file 	"/var/lib/mpd/sticker.sql"
pid_file 	"/var/run/mpd/pid"
music_directory 	"/mnt/MPD"
playlist_directory 	"/var/lib/mpd/playlists"
follow_outside_symlinks 	"yes"
follow_inside_symlinks 	"yes"
auto_update 	"yes"
filesystem_charset 	"UTF-8"
id3v1_encoding 	"UTF-8"
volume_normalization 	"no"
audio_buffer_size 	"2048"
buffer_before_play 	"20%"
gapless_mp3_playback 	"yes"
mixer_type 	"software"

input {
	plugin 	"curl"
}

decoder {
	plugin 	"ffmpeg"
	enabled "yes"
}
replaygain 	"off"

audio_output {
	name 		"bcm2835 ALSA_1"
	type 		"alsa"
	device 		"hw:0,0"
	auto_resample 	"no"
	auto_format 	"no"
}

audio_output {
	name 		"USB Audio DAC"
	type 		"alsa"
	device 		"hw:1,0"
	auto_resample 	"no"
	auto_format 	"no"
	enabled 	"yes"
}

audio_output {
	name 		"bcm2835 ALSA_2"
	type 		"alsa"
	device 		"hw:0,0"
	auto_resample 	"no"
	auto_format 	"no"
}

hondagx35

Hi Max M,

your problem has nothing to do with this topic.
You have installed spotify connect which is not supported by RuneAudio.

Reading a bit in the docs:
/usr/bin/sh /root/spotify-connect-web.sh --name Stereo --device 1 --mixer PCM --username lalala --password lalala --bitrate 320

Frank

Max M

Thanks a lot! That worked with --device 0 after I understood how to identify the device with aplay -l.

lookit

I have been strugling with this too.
I changed the line in libao.conf from dev=xxx to dev=default and it works now I can play spotify on my usb dac