Public bug reported:
Sometimes in 14.04 I don't have any audible sound. Checking volume
applet > Sound Settings I can see that output is set to S/PDIF. Even
though the audio previously was through HDMI. Switching it back to HDMI
makes the sound audible again.
I have no speakers connected either through analog or S/PDIF. Only HDMI.
After initial install, it was set to HDMI.
Why does this happen automatically?
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: pulseaudio 1:4.0-0ubuntu10
ProcVersionSignature: Ubuntu 3.13.0-19.40-generic 3.13.6
Uname: Linux 3.13.0-19-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.13.3-0ubuntu1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: thnov 1875 F.... pulseaudio
/dev/snd/controlC0: thnov 1875 F.... pulseaudio
CurrentDesktop: Unity
Date: Sun Mar 30 16:50:57 2014
EcryptfsInUse: Yes
InstallationDate: Installed on 2014-03-28 (2 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Beta amd64 (20140326)
SourcePackage: pulseaudio
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 06/04/2013
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1302
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: P8H77-M LE
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: Rev X.0x
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvr1302:bd06/04/2013:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnP8H77-MLE:rvrRevX.0x:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer
** Affects: pulseaudio (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug trusty
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https://bugs.launchpad.net/bugs/1299786
Title:
Sometimes no audio, output changed to S/PDIF
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