[MacBook4,1, Realtek ALC889A, Speaker, Internal] Only right bass speaker is working, left is not.
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
alsa-driver (Ubuntu) |
Expired
|
Undecided
|
Unassigned |
Bug Description
1) I'm using Ubuntu 12.10 64bit+mac release on a Macbook 4.1 2GB RAM Intel Core 2 Duo 2.4GHz
2) There's no package information due it's a system audio issue.
3) Macbook 4.1 comes with 2 built-in speakers for high tones and 2 bass speakers for bass tones. On Ubuntu, the left bass peaker isn't working, even testing every audio channel on ALSAMIXER.
4) Since this bass speaker isn't working, sound produced is unbalanced and overall weak.
ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: alsa-base 1.0.25+
ProcVersionSign
Uname: Linux 3.5.0-17-generic x86_64
NonfreeKernelMo
ApportVersion: 2.6.1-0ubuntu3
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/
Date: Tue Oct 23 15:36:38 2012
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64+mac (20121017.3)
PackageArchitec
SourcePackage: alsa-driver
Symptom: audio
Symptom_
Symptom_Card: Audio Interno - HDA Intel
Symptom_Jack: Speaker, Internal
Symptom_Type: Only some of outputs are working
Title: [MacBook4,1, Realtek ALC889A, Speaker, Internal] Playback problem
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 02/09/08
dmi.bios.vendor: Apple Inc.
dmi.bios.version: MB41.88Z.
dmi.board.
dmi.board.name: Mac-F22788A9
dmi.board.vendor: Apple Inc.
dmi.board.version: PVT
dmi.chassis.
dmi.chassis.type: 2
dmi.chassis.vendor: Apple Inc.
dmi.chassis.
dmi.modalias: dmi:bvnAppleInc
dmi.product.name: MacBook4,1
dmi.product.
dmi.sys.vendor: Apple Inc.
I'd like to add some comments:
·Under Mac OS X 10.6.8 all 4 speakers are working fine, sound has bass and is correctly balanced, sounding strong and clear.
·Performing the "left speaker" and "right speaker" tests from this page [ http:// www.richardfarr ar.com/ are-your- speakers- wired-correctly / ] reveals differences between Ubuntu and Mac OS X.