I have the same with my external USB sound card (Terratec Aureon 5.1 USB MKII) on Ubuntu Studio 15.10. I tried the version that comes with Ubuntu 15.10 and also Audacity 2.1.1
I noticed this since i installed Ubuntu Studio 15.10. Before that i was using Ubuntu Studio 14.04 LTS and never had problems with this soundcard and Audacity. The output when is start Audacity from terminal: nj@Latitude:~$ audacity ALSA lib pcm_dsnoop.c:614:(snd_pcm_dsnoop_open) unable to open slave ALSA lib pcm_dmix.c:1024:(snd_pcm_dmix_open) unable to open slave ALSA lib pcm.c:2267:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear ALSA lib pcm.c:2267:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe ALSA lib pcm.c:2267:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side ALSA lib pcm_dmix.c:1024:(snd_pcm_dmix_open) unable to open slave Cannot connect to server socket err = Datei oder Verzeichnis nicht gefunden Cannot connect to server request channel jack server is not running or cannot be started Expression 'stream->playback.pcm' failed in 'src/hostapi/alsa/pa_linux_alsa.c', line: 4611 Expression 'stream->playback.pcm' failed in 'src/hostapi/alsa/pa_linux_alsa.c', line: 4611 ALSA lib pcm.c:7905:(snd_pcm_recover) underrun occurred ALSA lib pcm.c:7905:(snd_pcm_recover) underrun occurred ALSA lib pcm.c:7905:(snd_pcm_recover) underrun occurred ALSA lib pcm.c:7905:(snd_pcm_recover) underrun occurred ALSA lib pcm.c:7905:(snd_pcm_recover) underrun occurred Audacity freezes sometimes and the last line occurs very often until i have to kill Audacity. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1460498 Title: Unable to play back sound or plays back too fast with Audacity on Ubuntu 15.04 with wireless USB Headset To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/audacity/+bug/1460498/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
