Public bug reported:
I have a EDIROL UA-1A USB soundcard which for the most part under 12.04
worked however after a period of uptime, ALSA calls started failing with
messages of this nature:
ALSA lib pcm_dmix.c:1022:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm_dmix.c:1022:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm_dmix.c:1022:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm_dmix.c:1022:(snd_pcm_dmix_open) unable to open slave
and the kernel ring buffer would have streams of:
[673754.825092] xhci_hcd 0000:02:00.0: ERROR Transfer event TRB DMA ptr not
part of current TD
[673754.830412] xhci_hcd 0000:02:00.0: ERROR Transfer event TRB DMA ptr not
part of current TD
and:
[673429.575699] retire_capture_urb: 596 callbacks suppressed
sometimes unplugging/plugging the card would fix this, other times a
system reboot was required.
Since the upgrade to 14.04 this seems to have got worse in that most of
the time it behaves in this manner and the unplugging/plugging approach
never works. From a kernel perspective, I was already running a 3.13.x
release with 12.04 so there's not been a major update on this front
since the upgrade.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: pulseaudio 1:4.0-0ubuntu11.1
ProcVersionSignature: Ubuntu 3.13.0-106.153-generic 3.13.11-ckt39
Uname: Linux 3.13.0-106-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.23
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: jon 25970 F.... pulseaudio
/dev/snd/pcmC0D0c: jon 25970 F...m pulseaudio
/dev/snd/pcmC0D0p: jon 25970 F...m pulseaudio
CurrentDesktop: LXDE
Date: Fri Jan 13 12:56:13 2017
InstallationDate: Installed on 2013-07-25 (1268 days ago)
InstallationMedia: Ubuntu-Server 12.04.2 LTS "Precise Pangolin" - Release amd64
(20130214)
ProcEnviron:
LANGUAGE=en_GB:en
TERM=xterm
PATH=(custom, no user)
LANG=en_GB.UTF-8
SHELL=/bin/bash
SourcePackage: pulseaudio
Symptom: audio
UpgradeStatus: Upgraded to trusty on 2016-12-28 (15 days ago)
dmi.bios.date: 02/22/2013
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 4.6.5
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: X9SBAA
dmi.board.vendor: Supermicro
dmi.board.version: 0123456789
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 17
dmi.chassis.vendor: Supermicro
dmi.chassis.version: 0123456789
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvr4.6.5:bd02/22/2013:svnSupermicro:pnX9SBAA:pvr0123456789:rvnSupermicro:rnX9SBAA:rvr0123456789:cvnSupermicro:ct17:cvr0123456789:
dmi.product.name: X9SBAA
dmi.product.version: 0123456789
dmi.sys.vendor: Supermicro
** Affects: ubuntu
Importance: Undecided
Status: New
** Tags: amd64 apport-bug third-party-packages trusty
** Package changed: pulseaudio (Ubuntu) => ubuntu
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https://bugs.launchpad.net/bugs/1656302
Title:
USB sound card intermittant/unable to play audio
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