I am also experiencing this bug. Playback in Audacity is fast/garbled and causes Audacity to crash external usb soundcard - Behringer UCA202 Ubuntu 15.10 Audacity 2.0.6 from repos or 2.1.2 manually installed
similar to N.J, my terminal is filled with the warning: ALSA lib pcm.c:7905:(snd_pcm_recover) underrun occurred (workaround) open the file ~/.config/pulse/daemon.conf - if that file doesn't exist, create it: cp /etc/pulse/daemon.conf ~/.config/pulse/daemon.conf - add this line to the bottom of the file and save it: default-fragment-size-msec = 2 - restart pulse: pulseaudio -k decreasing the fragment size from the default of 25ms to 2ms probably increases the likelihood of stuttering if the system is under load, but I have not noticed any problems yet. The "default-fragments" value also has an influence, some values generate the problem and some don't, regardless of the fragment size value. I don't experience the error when default-fragments is on the default of 4 so I leave it unset. (references) https://bbs.archlinux.org/viewtopic.php?id=185736 http://forums.linuxmint.com/viewtopic.php?f=42&t=44862 -- You received this bug notification because you are a member of Ubuntu Studio Bugs, which is subscribed to audacity in Ubuntu. Matching subscriptions: Ubuntu Studio Bugs 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 Status in audacity package in Ubuntu: Confirmed Bug description: I can record my voice just fine with my headset, but Audacity doesn't detect my headset's output. So it records fine, but when it's set to "default" or "pulse", I can't play back ANYTHING OR it just plays back too fast, trying to play back to my headset, either way is unacceptable. I have a Logitech Wireless Headset H600 ( USB ). Audacity 2.0.6 Ubuntu 15.04 nothing_much@nothingmuchheretosay:~$ audacity ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side ALSA lib pcm_route.c:947:(find_matching_chmap) Found no matching channel map ALSA lib pcm_route.c:947:(find_matching_chmap) Found no matching channel map bt_audio_service_open: connect() failed: Connection refused (111) bt_audio_service_open: connect() failed: Connection refused (111) bt_audio_service_open: connect() failed: Connection refused (111) bt_audio_service_open: connect() failed: Connection refused (111) Cannot connect to server socket err = No such file or directory Cannot connect to server request channel jack server is not running or cannot be started 21:43:19: Debug: DirManager: Created new instance. 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 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 Expression 'stream->playback.pcm' failed in 'src/hostapi/alsa/pa_linux_alsa.c', line: 4611 21:43:25: Debug: AudioIO::GetBestRate() for capture 21:43:25: Debug: GetBestRate() suggested rate 44100 Hz 21:43:25: Debug: GetBestRate() Returning 44100 Hz ALSA lib pcm.c:7843:(snd_pcm_recover) underrun occurred ALSA lib pcm.c:7843:(snd_pcm_recover) underrun occurred The ALSA lib pcm thing repeats after every attempt to play back, happens when it attempts to play back. ProblemType: Bug DistroRelease: Ubuntu 15.04 Package: audacity 2.0.6-2 [modified: usr/share/applications/audacity.desktop] ProcVersionSignature: Ubuntu 3.19.0-18.18-generic 3.19.6 Uname: Linux 3.19.0-18-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.17.2-0ubuntu1.1 Architecture: amd64 CurrentDesktop: Unity Date: Sun May 31 21:33:16 2015 InstallationDate: Installed on 2015-05-15 (16 days ago) InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1) SourcePackage: audacity UpgradeStatus: Upgraded to vivid on 2015-05-15 (16 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/audacity/+bug/1460498/+subscriptions -- Mailing list: https://launchpad.net/~ubuntustudio-bugs Post to : [email protected] Unsubscribe : https://launchpad.net/~ubuntustudio-bugs More help : https://help.launchpad.net/ListHelp
