Public bug reported:

I have tried all the online sites and still cannot get any sound out of
my speakers. The speakers do work when I launch the MacOSX platform.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: alsa-base 1.0.25+dfsg-0ubuntu5
ProcVersionSignature: Ubuntu 4.15.0-101.102~16.04.1-generic 4.15.18
Uname: Linux 4.15.0-101-generic i686
ApportVersion: 2.20.1-0ubuntu2.23
Architecture: i386
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  uday       1536 F.... pulseaudio
CurrentDesktop: Unity
Date: Tue May 19 13:42:22 2020
InstallationDate: Installed on 2020-05-18 (0 days ago)
InstallationMedia: Ubuntu 16.04.6 LTS "Xenial Xerus" - Release i386 (20190227.1)
PackageArchitecture: all
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:Intel failed
Symptom_Card: Built-in Audio - HDA Intel
Symptom_DevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  uday       1536 F.... pulseaudio
Symptom_Jack: White Speaker, Internal
Symptom_Type: No sound at all
Title: [MacBookPro1,2, SigmaTel STAC9221 A1, White Speaker, Internal] No sound 
at all
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 10/12/06
dmi.bios.vendor: Apple Computer, Inc.
dmi.bios.version: MBP12.88Z.0061.B03.0610121334
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: Mac-F42DBEC8
dmi.board.vendor: Apple Computer, Inc.
dmi.board.version: PVT
dmi.chassis.asset.tag: Asset Tag
dmi.chassis.type: 8
dmi.chassis.vendor: Apple Computer, Inc.
dmi.chassis.version: Mac-F42DBEC8
dmi.modalias: 
dmi:bvnAppleComputer,Inc.:bvrMBP12.88Z.0061.B03.0610121334:bd10/12/06:svnAppleComputer,Inc.:pnMacBookPro1,2:pvr1.0:rvnAppleComputer,Inc.:rnMac-F42DBEC8:rvrPVT:cvnAppleComputer,Inc.:ct8:cvrMac-F42DBEC8:
dmi.product.family: Napa Mac
dmi.product.name: MacBookPro1,2
dmi.product.version: 1.0
dmi.sys.vendor: Apple Computer, Inc.

** Affects: alsa-driver (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug i386 xenial

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You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to alsa-driver in Ubuntu.
https://bugs.launchpad.net/bugs/1879495

Title:
  [MacBookPro1,2, SigmaTel STAC9221 A1, White Speaker, Internal] No
  sound at all

Status in alsa-driver package in Ubuntu:
  New

Bug description:
  I have tried all the online sites and still cannot get any sound out
  of my speakers. The speakers do work when I launch the MacOSX
  platform.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: alsa-base 1.0.25+dfsg-0ubuntu5
  ProcVersionSignature: Ubuntu 4.15.0-101.102~16.04.1-generic 4.15.18
  Uname: Linux 4.15.0-101-generic i686
  ApportVersion: 2.20.1-0ubuntu2.23
  Architecture: i386
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  uday       1536 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Tue May 19 13:42:22 2020
  InstallationDate: Installed on 2020-05-18 (0 days ago)
  InstallationMedia: Ubuntu 16.04.6 LTS "Xenial Xerus" - Release i386 
(20190227.1)
  PackageArchitecture: all
  SourcePackage: alsa-driver
  Symptom: audio
  Symptom_AlsaPlaybackTest: ALSA playback test through plughw:Intel failed
  Symptom_Card: Built-in Audio - HDA Intel
  Symptom_DevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  uday       1536 F.... pulseaudio
  Symptom_Jack: White Speaker, Internal
  Symptom_Type: No sound at all
  Title: [MacBookPro1,2, SigmaTel STAC9221 A1, White Speaker, Internal] No 
sound at all
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 10/12/06
  dmi.bios.vendor: Apple Computer, Inc.
  dmi.bios.version: MBP12.88Z.0061.B03.0610121334
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: Mac-F42DBEC8
  dmi.board.vendor: Apple Computer, Inc.
  dmi.board.version: PVT
  dmi.chassis.asset.tag: Asset Tag
  dmi.chassis.type: 8
  dmi.chassis.vendor: Apple Computer, Inc.
  dmi.chassis.version: Mac-F42DBEC8
  dmi.modalias: 
dmi:bvnAppleComputer,Inc.:bvrMBP12.88Z.0061.B03.0610121334:bd10/12/06:svnAppleComputer,Inc.:pnMacBookPro1,2:pvr1.0:rvnAppleComputer,Inc.:rnMac-F42DBEC8:rvrPVT:cvnAppleComputer,Inc.:ct8:cvrMac-F42DBEC8:
  dmi.product.family: Napa Mac
  dmi.product.name: MacBookPro1,2
  dmi.product.version: 1.0
  dmi.sys.vendor: Apple Computer, Inc.

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