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

[Uday Trivedi]

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.