Hey, * i run a updated debian stretch * mpd cannot find the default alsa soundcard. * sudo -u mpd aplay -D default /Side_Right.wav -> results in the desired audio output. * also, https://bbs.archlinux.org/viewtopic.php?pid=1372042#p1372042 doesn't help * switching to pulseaudio doesn't work, results in this bug: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=690530 - decided to debug alsa first, as its simpler.
==> any ideas? /var/log/mpd.log ALSA lib confmisc.c:767:(parse_card) cannot find card '0' ALSA lib conf.c:4528:(_snd_config_evaluate) function snd_func_card_driver retu rned error: No such file or directory ALSA lib confmisc.c:392:(snd_func_concat) error evaluating strings ALSA lib conf.c:4528:(_snd_config_evaluate) function snd_func_concat returned error: No such file or directory ALSA lib confmisc.c:1246:(snd_func_refer) error evaluating name ALSA lib conf.c:4528:(_snd_config_evaluate) function snd_func_refer returned e rror: No such file or directory ALSA lib conf.c:5007:(snd_config_expand) Evaluate error: No such file or direc tory ALSA lib pcm.c:2495:(snd_pcm_open_noupdate) Unknown PCM default Dec 25 15:11 : alsa_output: Failed to open "ALSA sound card" [alsa]: Failed to open ALSA device "default": No such file or directory Dec 25 15:11 : output: Failed to open audio output Dec 25 15:11 : player: problems opening audio device while playing "melodical/ Abel_Korzeniowski-Nocturnal_Animals/09.Mothers.ogg" # groups mpd mpd : audio # aplay -l | head **** List of PLAYBACK Hardware Devices **** card 0: PCH [HDA Intel PCH], device 0: ALC255 Analog [ALC255 Analog] Subdevices: 0/1 Subdevice #0: subdevice #0 card 0: PCH [HDA Intel PCH], device 3: HDMI 0 [HDMI 0] Subdevices: 1/1 Subdevice #0: subdevice #0 # aplay --list-pcm | head null Discard all samples (playback) or generate zero samples (capture) default:CARD=PCH HDA Intel PCH, ALC255 Analog Default Audio Device sysdefault:CARD=PCH HDA Intel PCH, ALC255 Analog Default Audio Device front:CARD=PCH,DEV=0 HDA Intel PCH, ALC255 Analog /etc/asound.conf defaults.pcm.device 0 defaults.ctl.card 0 defaults.pcm.card 0 defaults.timer.card /etc/mpd.conf audio_output { type "alsa" name "ALSA sound card" }