Sound mute by default on fresh installation

Bug #574513 reported by Onkar Shinde on 2010-05-03
This bug affects 2 people
Affects Status Importance Assigned to Milestone
pulseaudio (Ubuntu)

Bug Description

Binary package hint: pulseaudio

This is a fresh installation of Ubuntu on my PC. On starting the PC after installation I observed that sound is muted by default. Not a major problem but can be confusing to new users.

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: pulseaudio 1:0.9.22~0.9.21+stable-queue-32-g8478-0ubuntu14
ProcVersionSignature: Ubuntu 2.6.32-21.32-generic
Uname: Linux 2.6.32-21-generic i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
Architecture: i386
 /dev/snd/controlC0: onkar 1283 F.... pulseaudio
 Card hw:0 'V8237'/'VIA 8237 with ALC658D at 0xe000, irq 22'
   Mixer name : 'Realtek ALC658D'
   Components : 'AC97a:414c4781'
   Controls : 45
   Simple ctrls : 27
 [ 22.480041] eth0: no IPv6 routers present
 [ 27.320048] end_request: I/O error, dev fd0, sector 0
 [ 27.364081] end_request: I/O error, dev fd0, sector 0
Date: Mon May 3 19:44:10 2010
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
SourcePackage: pulseaudio 12/19/2003
dmi.bios.vendor: Phoenix Technologies, LTD
dmi.bios.version: 3.06 Kamet2
dmi.board.vendor: ASUSTek Computer INC.
dmi.board.version: 2.01
dmi.chassis.type: 3
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias: dmi:bvnPhoenixTechnologies,LTD:bvr3.06:bd12/19/2003:svnCompaqPresario061:pnDT381A-ACJS6020ILIN430:pvr01H0411LX101KAME210:rvnASUSTekComputerINC.:rnKamet2:rvr2.01:cvnHewlett-Packard:ct3:cvr: DT381A-ACJ S6020IL IN430
dmi.product.version: 01H0411LX101KAME210
dmi.sys.vendor: Compaq Presario 061

Onkar Shinde (onkarshinde) wrote :
Onkar Shinde (onkarshinde) wrote :

Screenshot showing sound status.

I can't view the screenshot using a text-only MUA ;)

Is External Amplifier muted by default on a fresh install? Does it need to
be toggled for audible sound? If so, to which value?

On May 3, 2010 10:51 AM, "Onkar Shinde" <email address hidden> wrote:

Screenshot showing sound status.

** Attachment added: "mute_sound.png"

Sound mute by default on fresh installation
You received...

Onkar Shinde (onkarshinde) wrote :


What do you mean by 'External Amplifier'? Where do I check its status?

Daniel T Chen (crimsun) wrote :

It's an alsa control. Use amixer or alsamixer to query/set its value.

Onkar Shinde (onkarshinde) wrote :

External Amplifier is not muted by default. It has only two states, mute and unmute. Also it's state does not affect the sound output.

frizzle21 (frederik-nnaji) wrote :

the control can be unmuted via pulse..
myself on 2 machines and 1 other user from my local group report the same behaviour

tags: added: sound
Changed in pulseaudio (Ubuntu):
status: New → Confirmed
tags: added: alsa mixer
tags: added: mute
Detlef Lechner (detlef-lechner) wrote :

I am affected too but I did dist-upgrade from 09.10. It is a regression for me.
'~$ uname -a; Linux T43 2.6.32-22-generic #36-Ubuntu SMP Thu Jun 3 22:02:19 UTC 2010 i686 GNU/Linux'
After a reboot alsamixer shows the Master volume control muted. De-muting it and advancing this volume control solves the problem for me.

broe (erich-rupp) wrote :

this works for me, add the following line:

set-sink-mute 0 0

... to this file


tags: removed: mixer mute
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