Public bug reported:

I have upgraded to the latest UBUNTU and now my laptop has no sound
output.

ProblemType: Bug
DistroRelease: Ubuntu 18.10
Package: pulseaudio 1:12.2-0ubuntu4
ProcVersionSignature: Ubuntu 4.18.0-11.12-generic 4.18.12
Uname: Linux 4.18.0-11-generic x86_64
ApportVersion: 2.20.10-0ubuntu13.1
Architecture: amd64
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/dsp', 
'/dev/snd/by-path', '/dev/snd/controlC0', '/dev/snd/hwC0D2', '/dev/snd/hwC0D0', 
'/dev/snd/pcmC0D10p', '/dev/snd/pcmC0D9p', '/dev/snd/pcmC0D8p', 
'/dev/snd/pcmC0D7p', '/dev/snd/pcmC0D3p', '/dev/snd/pcmC0D0c', 
'/dev/snd/pcmC0D0p', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
CurrentDesktop: MATE
Date: Fri Nov 30 23:10:57 2018
InstallationDate: Installed on 2018-04-28 (216 days ago)
InstallationMedia: Ubuntu-MATE 17.10 "Artful Aardvark" - Release amd64 
(20180106)
SourcePackage: pulseaudio
Symptom: audio
Symptom_Card: HDA-Intel - HDA Intel PCH
Symptom_Jack: Speaker, Internal
Title: [SATELLITE PRO A50-C, Realtek ALC255, Speaker, Internal] Pulseaudio 
fails to detect card
UpgradeStatus: Upgraded to cosmic on 2018-11-30 (0 days ago)
dmi.bios.date: 02/07/2017
dmi.bios.vendor: TOSHIBA
dmi.bios.version: Version 7.70
dmi.board.asset.tag: 0000000000
dmi.board.name: SATELLITE PRO A50-C
dmi.board.vendor: TOSHIBA
dmi.board.version: Version A0
dmi.chassis.asset.tag: 0000000000
dmi.chassis.type: 10
dmi.chassis.vendor: TOSHIBA
dmi.chassis.version: Version 1.0
dmi.modalias: 
dmi:bvnTOSHIBA:bvrVersion7.70:bd02/07/2017:svnTOSHIBA:pnSATELLITEPROA50-C:pvrPS575E-0U106EEN:rvnTOSHIBA:rnSATELLITEPROA50-C:rvrVersionA0:cvnTOSHIBA:ct10:cvrVersion1.0:
dmi.product.family: 0000000000
dmi.product.name: SATELLITE PRO A50-C
dmi.product.sku: PS575E
dmi.product.version: PS575E-0U106EEN
dmi.sys.vendor: TOSHIBA

** Affects: pulseaudio (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug cosmic

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You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to pulseaudio in Ubuntu.
https://bugs.launchpad.net/bugs/1806145

Title:
  [SATELLITE PRO A50-C, Realtek ALC255, Speaker, Internal] Pulseaudio
  fails to detect card

Status in pulseaudio package in Ubuntu:
  New

Bug description:
  I have upgraded to the latest UBUNTU and now my laptop has no sound
  output.

  ProblemType: Bug
  DistroRelease: Ubuntu 18.10
  Package: pulseaudio 1:12.2-0ubuntu4
  ProcVersionSignature: Ubuntu 4.18.0-11.12-generic 4.18.12
  Uname: Linux 4.18.0-11-generic x86_64
  ApportVersion: 2.20.10-0ubuntu13.1
  Architecture: amd64
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/dsp', 
'/dev/snd/by-path', '/dev/snd/controlC0', '/dev/snd/hwC0D2', '/dev/snd/hwC0D0', 
'/dev/snd/pcmC0D10p', '/dev/snd/pcmC0D9p', '/dev/snd/pcmC0D8p', 
'/dev/snd/pcmC0D7p', '/dev/snd/pcmC0D3p', '/dev/snd/pcmC0D0c', 
'/dev/snd/pcmC0D0p', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
  CurrentDesktop: MATE
  Date: Fri Nov 30 23:10:57 2018
  InstallationDate: Installed on 2018-04-28 (216 days ago)
  InstallationMedia: Ubuntu-MATE 17.10 "Artful Aardvark" - Release amd64 
(20180106)
  SourcePackage: pulseaudio
  Symptom: audio
  Symptom_Card: HDA-Intel - HDA Intel PCH
  Symptom_Jack: Speaker, Internal
  Title: [SATELLITE PRO A50-C, Realtek ALC255, Speaker, Internal] Pulseaudio 
fails to detect card
  UpgradeStatus: Upgraded to cosmic on 2018-11-30 (0 days ago)
  dmi.bios.date: 02/07/2017
  dmi.bios.vendor: TOSHIBA
  dmi.bios.version: Version 7.70
  dmi.board.asset.tag: 0000000000
  dmi.board.name: SATELLITE PRO A50-C
  dmi.board.vendor: TOSHIBA
  dmi.board.version: Version A0
  dmi.chassis.asset.tag: 0000000000
  dmi.chassis.type: 10
  dmi.chassis.vendor: TOSHIBA
  dmi.chassis.version: Version 1.0
  dmi.modalias: 
dmi:bvnTOSHIBA:bvrVersion7.70:bd02/07/2017:svnTOSHIBA:pnSATELLITEPROA50-C:pvrPS575E-0U106EEN:rvnTOSHIBA:rnSATELLITEPROA50-C:rvrVersionA0:cvnTOSHIBA:ct10:cvrVersion1.0:
  dmi.product.family: 0000000000
  dmi.product.name: SATELLITE PRO A50-C
  dmi.product.sku: PS575E
  dmi.product.version: PS575E-0U106EEN
  dmi.sys.vendor: TOSHIBA

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