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UPDATE: Today's upgrade to alsa-lib-1.1.7-2 fixed the issue. (2018-11-23)

Arch Linux, up-to-date. As so often, a -Syu upgrade broke things again. This time it's audacity. Usually audacity, and any other playback/record app would show up in pauvcontrol - Not audacity anymore. I could use pauvcontrol to choose sink and source from which I want to record or playback audio using audacity - not anymore.

In audacity's preferences it only says ALSA in the top dropdown, im not sure if that is supposed to be like that or if it said PulseAudio before. There aren't even all my devices in the playback tab. Same goes for the recording device selection, but the loopback device I need to record from is there, so that works.

preferences

But now I wanted to playback sound from audacity too and it just doesn't work anymore. It doesn't list my USB playback device and when I set it to sysdefault I just get an error.

$ pulseaudio -v pulseaudio 12.2 $ audacity --version lilv_world_add_plugin(): warning: Duplicate plugin <http://lv2plug.in/plugins/eg-params> lilv_world_add_plugin(): warning: ... found in file:///usr/lib/lv2/eg-params.lv2/ lilv_world_add_plugin(): warning: ... and file:///usr/lib64/lv2/eg-params.lv2/ (ignored) lilv_world_add_plugin(): warning: Duplicate plugin <http://lv2plug.in/plugins/eg-midigate> lilv_world_add_plugin(): warning: ... found in file:///usr/lib/lv2/eg-midigate.lv2/ lilv_world_add_plugin(): warning: ... and file:///usr/lib64/lv2/eg-midigate.lv2/ (ignored) lilv_world_add_plugin(): warning: Duplicate plugin <http://lv2plug.in/plugins/eg-fifths> lilv_world_add_plugin(): warning: ... found in file:///usr/lib/lv2/eg-fifths.lv2/ lilv_world_add_plugin(): warning: ... and file:///usr/lib64/lv2/eg-fifths.lv2/ (ignored) lilv_world_add_plugin(): warning: Duplicate plugin <http://lv2plug.in/plugins/eg-metro> lilv_world_add_plugin(): warning: ... found in file:///usr/lib/lv2/eg-metro.lv2/ lilv_world_add_plugin(): warning: ... and file:///usr/lib64/lv2/eg-metro.lv2/ (ignored) lilv_world_add_plugin(): warning: Duplicate plugin <http://lv2plug.in/plugins/eg-amp> lilv_world_add_plugin(): warning: ... found in file:///usr/lib/lv2/eg-amp.lv2/ lilv_world_add_plugin(): warning: ... and file:///usr/lib64/lv2/eg-amp.lv2/ (ignored) lilv_world_add_plugin(): warning: Duplicate plugin <http://lv2plug.in/plugins/eg-sampler> lilv_world_add_plugin(): warning: ... found in file:///usr/lib/lv2/eg-sampler.lv2/ lilv_world_add_plugin(): warning: ... and file:///usr/lib64/lv2/eg-sampler.lv2/ (ignored) lilv_world_add_plugin(): warning: Duplicate plugin <http://lv2plug.in/plugins/eg-scope#Mono> lilv_world_add_plugin(): warning: ... found in file:///usr/lib/lv2/eg-scope.lv2/ lilv_world_add_plugin(): warning: ... and file:///usr/lib64/lv2/eg-scope.lv2/ (ignored) lilv_world_add_plugin(): warning: Duplicate plugin <http://lv2plug.in/plugins/eg-scope#Stereo> lilv_world_add_plugin(): warning: ... found in file:///usr/lib/lv2/eg-scope.lv2/ lilv_world_add_plugin(): warning: ... and file:///usr/lib64/lv2/eg-scope.lv2/ (ignored) lilv_world_add_plugin(): warning: Reloading plugin <http://lv2plug.in/plugins/eg-params> lilv_world_add_plugin(): warning: Reloading plugin <http://lv2plug.in/plugins/eg-midigate> lilv_world_add_plugin(): warning: Reloading plugin <http://lv2plug.in/plugins/eg-fifths> lilv_world_add_plugin(): warning: Reloading plugin <http://lv2plug.in/plugins/eg-metro> lilv_world_add_plugin(): warning: Reloading plugin <http://lv2plug.in/plugins/eg-amp> lilv_world_add_plugin(): warning: Reloading plugin <http://lv2plug.in/plugins/eg-sampler> lilv_world_add_plugin(): warning: Reloading plugin <http://lv2plug.in/plugins/eg-scope#Mono> lilv_world_add_plugin(): warning: Reloading plugin <http://lv2plug.in/plugins/eg-scope#Stereo>

Not sure if those warnings mean anything, it won't print the version.
The package is audacity-2.3.0-1-x86_64.pkg.tar.xz

Full log of the console when starting audacity:

ALSA lib pcm_dmix.c:1099:(snd_pcm_dmix_open) unable to open slave ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side ALSA lib confmisc.c:1281:(snd_func_refer) Unable to find definition 'cards.Loopback.pcm.iec958.0:CARD=0,AES0=4,AES1=130,AES2=0,AES3=2' ALSA lib conf.c:4555:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory ALSA lib conf.c:5034:(snd_config_expand) Evaluate error: No such file or directory ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM iec958 ALSA lib confmisc.c:1281:(snd_func_refer) Unable to find definition 'cards.Loopback.pcm.iec958.0:CARD=0,AES0=4,AES1=130,AES2=0,AES3=2' ALSA lib conf.c:4555:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory ALSA lib conf.c:5034:(snd_config_expand) Evaluate error: No such file or directory ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM spdif ALSA lib confmisc.c:1281:(snd_func_refer) Unable to find definition 'cards.Loopback.pcm.iec958.0:CARD=0,AES0=4,AES1=130,AES2=0,AES3=2' ALSA lib conf.c:4555:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory ALSA lib conf.c:5034:(snd_config_expand) Evaluate error: No such file or directory ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM spdif ALSA lib confmisc.c:1281:(snd_func_refer) Unable to find definition 'cards.Loopback.pcm.hdmi.0:CARD=0,AES0=4,AES1=130,AES2=0,AES3=2' ALSA lib conf.c:4555:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory ALSA lib conf.c:5034:(snd_config_expand) Evaluate error: No such file or directory ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM hdmi ALSA lib confmisc.c:1281:(snd_func_refer) Unable to find definition 'cards.Loopback.pcm.hdmi.0:CARD=0,AES0=4,AES1=130,AES2=0,AES3=2' ALSA lib conf.c:4555:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory ALSA lib conf.c:5034:(snd_config_expand) Evaluate error: No such file or directory ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM hdmi ALSA lib confmisc.c:1281:(snd_func_refer) Unable to find definition 'cards.Loopback.pcm.modem.0:CARD=0' ALSA lib conf.c:4555:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory ALSA lib conf.c:5034:(snd_config_expand) Evaluate error: No such file or directory ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.phoneline:CARD=0,DEV=0 ALSA lib confmisc.c:1281:(snd_func_refer) Unable to find definition 'cards.Loopback.pcm.modem.0:CARD=0' ALSA lib conf.c:4555:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory ALSA lib conf.c:5034:(snd_config_expand) Evaluate error: No such file or directory ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.phoneline:CARD=0,DEV=0 ALSA lib confmisc.c:1281:(snd_func_refer) Unable to find definition 'cards.Loopback.pcm.modem.0:CARD=0' ALSA lib conf.c:4555:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory ALSA lib conf.c:5034:(snd_config_expand) Evaluate error: No such file or directory ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM phoneline ALSA lib confmisc.c:1281:(snd_func_refer) Unable to find definition 'cards.Loopback.pcm.modem.0:CARD=0' ALSA lib conf.c:4555:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory ALSA lib conf.c:5034:(snd_config_expand) Evaluate error: No such file or directory ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM phoneline connect(2) call to /dev/shm/jack-1000/default/jack_0 failed (err=No such file or directory) attempt to connect to server failed connect(2) call to /dev/shm/jack-1000/default/jack_0 failed (err=No such file or directory) attempt to connect to server failed ALSA lib pcm_oss.c:377:(_snd_pcm_oss_open) Unknown field port ALSA lib pcm_oss.c:377:(_snd_pcm_oss_open) Unknown field port Expression 'alsa_snd_pcm_hw_params_set_period_size_near( pcm, hwParams, &alsaPeriodFrames, &dir )' failed in 'src/hostapi/alsa/pa_linux_alsa.c', line: 924 ALSA lib pcm_usb_stream.c:486:(_snd_pcm_usb_stream_open) Invalid type for card ALSA lib pcm_usb_stream.c:486:(_snd_pcm_usb_stream_open) Invalid type for card ALSA lib pcm_dmix.c:1099:(snd_pcm_dmix_open) unable to open slave Expression 'alsa_snd_pcm_hw_params_set_period_size_near( pcm, hwParams, &alsaPeriodFrames, &dir )' failed in 'src/hostapi/alsa/pa_linux_alsa.c', line: 924 connect(2) call to /dev/shm/jack-1000/default/jack_0 failed (err=No such file or directory) attempt to connect to server failed

Even though I'm not sure if those errors are because of ALSA and maybe completely unrelated to the PulseAudio issue.

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2
  • This is very old but I am having the same problem on an up-to-date system. If anyone else has any ideas what else it could be then that would be helpful. Commented Mar 29, 2020 at 18:44
  • @Jachdich There's a not-too-little chance that it is a similar bug that will be fixed in a future update. Have you tried downgrading alsa-lib to a previous (known to be working) version as suggested in the answer below? Commented Mar 29, 2020 at 19:00

2 Answers 2

Reset to default
5

From the forums I found this bug. This is an issue with the latest (1.1.7) version of alsa-lib. Downgrading it to your previous version should work around the issue for now:

pacman -U /var/cache/pacman/pkg/alsa-lib-1.1.6-1-x86_64.pkg.tar.xz

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I'm running 1.1.8-1 of alsalibs and had a similar issue.  Starting audacity changed my output to the internal speaker.  I got it working with alsactl restore, then pulseaudio -k, but it's wonkey.  VLC and audacity can't seem to both use the output at once.

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  • Sounds like one of the two are trying to access the hardware directly, rather than using pulseaudio (which will lock it up, as in other devices can not access it at the same time). Seems very unrelated to the issue my question is about though. Commented May 10, 2019 at 3:25

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