Comment 2 for bug 461521

Please reassign this bug to the linux package. It's really a hardware issue
that we can attempt to work around in the sound driver. In the meantime, try
passing ignore_dB=1 to module-udev-detect in /etc/pulse/default.pa (or
~/.pulse/default.pa).

On Oct 26, 2009 6:50 PM, "Cristian KLEIN" <email address hidden> wrote:

Public bug reported:

When I use the multimedia keys and let pulseaudio set the volume, the
sound is already distorted halfway. 100% Master volume means 0dB, but
100% PCM volume means +35dB, which produced distorted output.

ProblemType: Bug
Architecture: i386
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: cristi 12720 F.... pulseaudio
 /dev/snd/pcmC0D0p: cristi 12720 F...m pulseaudio
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xfc300000 irq 22'
  Mixer name : 'Conexant CX20549 (Venice)'
  Components : 'HDA:14f15045,1734110e,00100100'
  Controls : 19
  Simple ctrls : 9
Date: Mon Oct 26 23:34:17 2009
DistroRelease: Ubuntu 9.10
NonfreeKernelModules: fglrx
Package: alsa-base 1.0.20+dfsg-1ubuntu5
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=fr_FR.UTF-8
 PATH=(custom, user)
 LANG=fr_FR.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
SourcePackage: alsa-driver
Uname: Linux 2.6.31-14-generic i686

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

** Tags: apport-bug i386

--
[karmic] CX20549 100% volume means 35dB (distorted output)
https://bugs.launchpad.net/bugs/461521
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Status in “alsa-driver” package in Ubuntu: New

Bug description:
When I use the multimedia keys and let pulseaudio set the volume, the sound
is already distorted halfway. 100% Master volume means 0dB, but 100% PCM
volume means +35dB, which produced distorted output.

ProblemType: Bug
Architecture: i386
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: cristi 12720 F.... pulseaudio
 /dev/snd/pcmC0D0p: cristi 12720 F...m pulseaudio
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xfc300000 irq 22'
  Mixer name : 'Conexant CX20549 (Venice)'
  Components : 'HDA:14f15045,1734110e,00100100'
  Controls : 19
  Simple ctrls : 9
Date: Mon Oct 26 23:34:17 2009
DistroRelease: Ubuntu 9.10
NonfreeKernelModules: fglrx
Package: alsa-base 1.0.20+dfsg-1ubuntu5
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=fr_FR.UTF-8
 PATH=(custom, user)
 LANG=fr_FR.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
SourcePackage: alsa-driver
Uname: Linux 2.6.31-14-generic i686