Sound imbalance

Bug #969700 reported by Bob Merhebi on 2012-03-30
This bug affects 1 person
Affects Status Importance Assigned to Milestone
linux (Ubuntu)

Bug Description

The sound from the builtin speakers are imbalanced to the right.

I discovered from the Sound Setting's "Test Sound" is that the left speaker is leaking sound to the right speaker causing this towards-right-imbalance!

P.S.: This occurs in Ubuntu 10.04LTS too; not sure about later versions!

lsb_release -rd
Description: Ubuntu precise (development branch)
Release: 12.04

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-3.2.0-20-generic 3.2.0-20.33
ProcVersionSignature: Ubuntu 3.2.0-20.33-generic 3.2.12
Uname: Linux 3.2.0-20-generic x86_64
NonfreeKernelModules: wl
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 1.95-0ubuntu1
Architecture: amd64
CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
Date: Sat Mar 31 02:19:27 2012
HibernationDevice: RESUME=UUID=ca289df0-21d9-4446-88e6-7a0e7970674c
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120328)
MachineType: Dell Inc. Studio XPS 1640
ProcFB: 0 radeondrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-20-generic root=UUID=60fe93c2-69d8-4f58-b5ea-b65e06e7b3c8 ro quiet splash vt.handoff=7
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install) 03/29/2010
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A14 0Y536R
dmi.board.vendor: Dell Inc.
dmi.board.version: A14
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: A14
dmi.modalias: dmi:bvnDellInc.:bvrA14:bd03/29/2010:svnDellInc.:pnStudioXPS1640:pvrA143:rvnDellInc.:rn0Y536R:rvrA14:cvnDellInc.:ct8:cvrA14: Studio XPS 1640
dmi.product.version: A143
dmi.sys.vendor: Dell Inc.

Bob Merhebi (bobmerhebi) wrote :
Ubuntu QA Website (ubuntuqa) wrote :

This bug has been reported on the Ubuntu laptop testing tracker.

A list of all reports related to this bug can be found here:

tags: added: laptop-testing
Brad Figg (brad-figg) on 2012-03-31
Changed in linux (Ubuntu):
status: New → Confirmed
Bob Merhebi (bobmerhebi) wrote :

Bug *not* fixed in latest upstream kernel (v3.3)

$ uname -a
Linux astrobob-Studio-XPS-1640 3.3.0-030300-generic #201203182135 SMP Mon Mar 19 01:36:20 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

Thank you for taking the time to file a bug report on this issue.

However, given the number of bugs that the Kernel Team receives during any development cycle it is impossible for us to review them all. Therefore, we occasionally resort to using automated bots to request further testing. This is such a request.

We have noted that there is a newer version of the development kernel than the one you last tested when this issue was found. Please test again with the newer kernel and indicate in the bug if this issue still exists or not.

You can update to the latest development kernel by simply running the following commands in a terminal window:

    sudo apt-get update
    sudo apt-get dist-upgrade

If the bug still exists, change the bug status from Incomplete to Confirmed. If the bug no longer exists, change the bug status from Incomplete to Fix Released.

If you want this bot to quit automatically requesting kernel tests, add a tag named: bot-stop-nagging.

 Thank you for your help, we really do appreciate it.

Changed in linux (Ubuntu):
status: Confirmed → Incomplete
tags: added: kernel-request-3.2.0-21.34
Bob Merhebi (bobmerhebi) on 2012-03-31
Changed in linux (Ubuntu):
status: Incomplete → Confirmed
tags: added: bot-stop-nagging
removed: kernel-request-3.2.0-21.34
Joseph Salisbury (jsalisbury) wrote :

Would it be possible for you to test the latest upstream kernel? Refer to . Please test the latest v3.3 kernel[1] (Not a kernel in the daily directory). Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag(Only that one tag, please leave the other tags). This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs-upstream-testing' text.

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'.
Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.


Changed in linux (Ubuntu):
importance: Undecided → Medium
tags: added: needs-upstream-testing
Changed in linux (Ubuntu):
status: Confirmed → Incomplete
Bob Merhebi (bobmerhebi) on 2012-04-02
tags: added: kernel-bug-exists-upstream
removed: needs-upstream-testing
Changed in linux (Ubuntu):
status: Incomplete → Confirmed
Joseph Salisbury (jsalisbury) wrote :

This issue appears to be an upstream bug, since you tested the latest upstream kernel. Would it be possible for you to open an upstream bug report at [1]? That will allow the upstream Developers to examine the issue, and may provide a quicker resolution to the bug.

If you are comfortable with opening a bug upstream, It would be great if you can report back the upstream bug number in this bug report. That will allow us to link this bug to the upstream report.


Changed in linux (Ubuntu):
status: Confirmed → Triaged
Changed in linux:
importance: Unknown → Medium
status: Unknown → Confirmed

Bob Merhebi, as per an update is available for your BIOS (A15). If you update to this following , does it change anything?

If not, could you please both specify what happened, and provide the output of the following terminal command:
sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date

Please note your current BIOS is already in the Bug Description, so posting this on the old BIOS would not be helpful.

For more on BIOS updates and linux, please see .

Thank you for your understanding.

tags: added: bios-outdated-a15 needs-upstream-testing
tags: added: lucid
Changed in linux (Ubuntu):
status: Triaged → Incomplete
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