snapclient not finding alsa output on raspi 1b

[andrewufrank]

Describe the bug the snapclient on a raspi 1b (running debian bookworm) cannot find the alsa output. Steps to Reproduce

1. snapclient -l gives

0: null
Discard all samples (playback) or generate zero samples (capture)

2. snapclient --player gives

sic4:~$ snapclient --player alsa
2023-12-21 17-32-36.539 [Error] (Snapclient) PCM device "default" not found
2023-12-21 17-32-36.547 [Info] (Snapclient) Version 0.27.0
2023-12-21 17-32-36.615 [Info] (Avahi) (Browser) NEW: service 'Snapcast' of type '_snapcast._tcp' in domain 'local'
2023-12-21 17-32-36.630 [Info] (Avahi) (Browser) NEW: service 'Snapcast' of type '_snapcast._tcp' in domain 'local'
2023-12-21 17-32-36.641 [Info] (Avahi) (Browser) CACHE_EXHAUSTED
2023-12-21 17-32-36.826 [Info] (Avahi) Service 'Snapcast' of type '_snapcast._tcp' in domain 'local':
2023-12-21 17-32-36.833 [Info] (Avahi) 	laredo.local:1704 (10.0.0.53)
2023-12-21 17-32-36.853 [Info] (Controller) Found server 10.0.0.53:1704
2023-12-21 17-32-36.861 [Info] (Connection) Resolving host IP for: 10.0.0.53
2023-12-21 17-32-36.866 [Info] (Connection) Connecting
2023-12-21 17-32-36.873 [Notice] (Connection) Connected to 10.0.0.53
2023-12-21 17-32-36.875 [Info] (Connection) My MAC: "b8:27:eb:a9:82:b4", socket: 8
2023-12-21 17-32-37.113 [Info] (Controller) ServerSettings - buffer: 1000, latency: 0, volume: 99, muted: 0
2023-12-21 17-32-37.119 [Info] (Controller) Codec: flac, sampleformat: 48000:16:2
2023-12-21 17-32-37.124 [Info] (Player) Player name: alsa, device: default, description: <none>, idx: -1, sharing mode: unspecified, parameters: <none>
2023-12-21 17-32-37.127 [Info] (Player) Mixer mode: software, parameters: <none>
2023-12-21 17-32-37.130 [Info] (Player) Sampleformat: 48000:16:2, stream: 48000:16:2
2023-12-21 17-32-37.131 [Info] (Alsa) Using default buffer_time: 80 ms, default fragments: 4
ALSA lib confmisc.c:855:(parse_card) cannot find card '0'
ALSA lib conf.c:5180:(_snd_config_evaluate) function snd_func_card_inum returned error: No such file or directory
ALSA lib confmisc.c:422:(snd_func_concat) error evaluating strings
ALSA lib conf.c:5180:(_snd_config_evaluate) function snd_func_concat returned error: No such file or directory
ALSA lib confmisc.c:1334:(snd_func_refer) error evaluating name
ALSA lib conf.c:5180:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:5703:(snd_config_expand) Evaluate error: No such file or directory
ALSA lib pcm.c:2666:(snd_pcm_open_noupdate) Unknown PCM default
2023-12-21 17-32-37.178 [Error] (Alsa) Exception: Can't open default, error: No such file or directory, code: -2
2023-12-21 17-32-37.185 [Fatal] (Snapclient) Exception: Can't open default, error: No such file or directory
2023-12-21 17-32-37.189 [Notice] (Snapclient) Snapclient terminated.

aplay -l
aplay: device_list:274: no soundcards found...
frank@music4:~$ lsmod | grep snd
snd_bcm2835            28672  0
snd_soc_hdmi_codec     24576  1
snd_soc_core          192512  2 vc4,snd_soc_hdmi_codec
snd_pcm_dmaengine      16384  1 snd_soc_core
snd_pcm               106496  4 snd_pcm_dmaengine,snd_soc_hdmi_codec,snd_bcm2835,snd_soc_core
snd_timer              32768  1 snd_pcm
snd                    73728  5 snd_soc_hdmi_codec,snd_timer,snd_bcm2835,snd_soc_core,snd_pcm
soundcore              16384  1 snd
vchiq                 200704  2 bcm2835_mmal_vchiq,snd_bcm2835

Environment details raspi 1b, running debian bookworm (from debian tested images) headless snapclient installed from bookworm-backports snapclient/stable-backports,now 0.27.0+dfsg-1~bpo12+1 armel [installed]

the output is connect in the blue connector (no hdmi connected). it works with mpd and produces sound as expected and says "my ALSA device"

the snapcast sees two client ath this site, with the same ip, which I do not understand either. why is the alsa output not found. what are possible action to debug?

thank you for an otherwise working system (have a different client working and work with snapcast app, which shows even this raspi client, but no sound). andrew

[andrewufrank]

i have a separate install on a rasi 4 (again running debian bookworm) and installed snapserver and snapclient on it from bookworm-backports - gives 0.27 version). the setup works for mpd (using the alsa output) and pipes the stream to other snapclients, but not to the local snapclient (i.e. the same which runs on same cpu than the snapserver). again, aplay -l gives

aplay -l
aplay: device_list:274: no soundcards found...

it seems that mpd captures the output channel. i have switched off the output in mpd to alsa device (which has a noticeable delay compared to the pipe and snapclients!)

[andrewufrank]

on the raspi 1b i have disabled the mpd server but still no soundcar found and no sound from the snapclient.

what command would help to find the card?

[andrewufrank]

I reinstalled a raspi-os (bookworm) to exclude the issue is caused by the debian linux (tested images) bookworm for raspi. the debian linux gives for snapclient -l only null, however sudo snapclient -l gives a long list.

for the debian linux on a raspi 1B i have reasonable output with sudo snapclient -s 10 (but not with snapclient -s 10) . changing /etc/default/snapclient to SNAPCLIENT_OPTS="-s 10" works.

however, on raspios (bookworm, but with the old version v. 0.26 for snapclient) I have sound output on user-land snapclietn -s 10 but not on sudo snapclient -s 10 and as a consequence it does not automatically start when enabled with systemd.

I conclude that the issue is caused whether one is running as user or as root; there is a difference between the raspian os (derived from debian) or in the version of snapclient (v.0.26 vs. v.0.27): one runs ok root privileges, the other works in user-land. I do not understand enough on how to tune the systemd controls to understand to fix this and would be interested to understand the background.

[badaix]

Please try with the v0.28.0 version, there are packages available here. The armhf-bookworn images should run on your RPI1b.