Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: alsa-driver (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1782597
Title:
Output of my USB audio device gets progressively bitcrushed
Status in alsa-driver package in Ubuntu:
Confirmed
Bug description:
After a while (between 5 and 10min), the output of my MOTU Ultralite
AVB usb sound card gets dirtier and faintier (sounds like a
bitcrushing effect) until there is no sound anymore. Sometimes muting
the sound and switching to internal audio device and back to the motu
will make the sound clean again, sometimes not. The Motu works ok with
windows.
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: alsa-base (not installed)
ProcVersionSignature: Ubuntu 4.15.0-23.25-generic 4.15.18
Uname: Linux 4.15.0-23-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.9-0ubuntu7.2
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Thu Jul 19 16:52:34 2018
InstallationDate: Installed on 2016-05-01 (809 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64
(20160420.1)
SourcePackage: alsa-driver
Symptom: audio
Symptom_Card: UltraLite AVB Baptiste - UltraLite AVB Baptiste
Symptom_PulseAudioLog:
juil. 19 16:29:48 multivac pulseaudio[1945]: [autospawn] core-util.c: Home
directory not accessible: Permission non accordée
juil. 19 16:29:48 multivac pulseaudio[1945]: [autospawn] lock-autospawn.c:
Impossible d'accèder au verrou autonome.
juil. 19 16:29:48 multivac pulseaudio[1945]: [pulseaudio] main.c: Failed to
acquire autospawn lock
juil. 19 16:30:00 multivac dbus-daemon[1441]: [system] Activating via
systemd: service name='org.freedesktop.RealtimeKit1'
unit='rtkit-daemon.service' requested by ':1.52' (uid=108 pid=3980
comm="/usr/bin/pulseaudio --start --log-target=syslog " label="unconfined")
juil. 19 16:30:06 multivac systemd[1]: session-c1.scope: Killing process
3980 (pulseaudio) with signal SIGTERM.
Symptom_Type: Sound works for a while, then breaks
Title: [USB-Audio - UltraLite AVB Baptiste, playback] fails after a while
UpgradeStatus: Upgraded to bionic on 2018-05-29 (50 days ago)
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