Comment 0 for bug 1127872

On Ubuntu 13.04 after the latest pulseaudio update (1.3.0), my sound keeps breaking intermittently. The problem seems to be related to multiple audio sources playing/pausing at once. The way I can most reliably reproduce it is playing a song in Rhythmbox while getting Pidgin notification sounds; after pausing the song in Rhythmbox, audio stops functioning completely and pulseaudio must be terminated for it to come back. (Sometimes, even after terminating and restarting pulseaudio, sound still does not work until logout/login or reboot.)

I ran pulseaudio with logging enabled and saw that after sound stopped working, this output repeated itself every time I tried to produce a sound:

( 282.746| 3.257) D: [alsa-sink] protocol-native.c: Requesting rewind due to end of underrun.

These errors were also frequent after the malfunction:

( 279.489| 0.000) D: [pulseaudio] module-suspend-on-idle.c: Sink alsa_output.pci-0000_00_1b.0.analog-stereo becomes busy.
( 284.375| 0.000) D: [alsa-sink] sink-input.c: Requesting rewind due to corking

I've attached my entire pulseaudio log. There's a lot there because I threw a lot of sounds at it to reproduce the error, but hopefully it's helpful.

ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: pulseaudio 1:3.0-0ubuntu1
ProcVersionSignature: Ubuntu 3.8.0-6.13-generic 3.8.0-rc7
Uname: Linux 3.8.0-6-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.8-0ubuntu4
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: polarimetric 7411 F.... pulseaudio
Date: Sun Feb 17 02:24:44 2013
InstallationDate: Installed on 2013-02-09 (8 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Alpha amd64+mac (20130208)
MarkForUpload: True
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: pulseaudio
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/24/12
dmi.bios.vendor: Apple Inc.
dmi.bios.version: MBP81.88Z.0047.B27.1201241646
dmi.board.asset.tag: Base Board Asset Tag#
dmi.board.name: Mac-94245A3940C91C80
dmi.board.vendor: Apple Inc.
dmi.board.version: MacBookPro8,2
dmi.chassis.type: 10
dmi.chassis.vendor: Apple Inc.
dmi.chassis.version: Mac-94245A3940C91C80
dmi.modalias: dmi:bvnAppleInc.:bvrMBP81.88Z.0047.B27.1201241646:bd01/24/12:svnAppleInc.:pnMacBookPro8,2:pvr1.0:rvnAppleInc.:rnMac-94245A3940C91C80:rvrMacBookPro8,2:cvnAppleInc.:ct10:cvrMac-94245A3940C91C80:
dmi.product.name: MacBookPro8,2
dmi.product.version: 1.0
dmi.sys.vendor: Apple Inc.