sound crackles when changing volume

[Cheezy]

Ubuntu 9.10
sound card: Asus Xonar DX
alsa 1.0.20-2ubuntu6

Whenever I adjust the sound through the gnome volume bar, the sound starts to crackle, and sometimes stop completely.

The sound cracks a bit when adjusting it in alsamixe. Usually just a hardly noticeable pop or two. Whenever I use the gnome volume bar, the sound tends to get really bad. Usually it starts by getting very distorted for about a second, then there will be a few seconds with practically no sound (usually a few pops), then sound comes back on with lots of distortion and the distortion fades away within about a second. It last around 5 seconds to over a minutes whenever I changed my volume.

The length of time the volume stops, or is distorted depends on how much I move the bar. if I drag it from 100% to 25%, I can expect over a minute wait before I can hear sound again.

This does not happen when I adjust the volume through Rythmbox, Movie Player or VLC player.

If I leave the volume in the gnome bar alone, the sound remains clear.

ProblemType: Bug
Architecture: amd64
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: DX [Xonar DX], device 0: Multichannel [Multichannel]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: cheez 2138 F.... pulseaudio
 /dev/snd/pcmC0D0p: cheez 2138 F...m pulseaudio
Card0.Amixer.info:
 Card hw:0 'DX'/'Asus Virtuoso 100 (rev 2) at 0xe800, irq 16'
   Mixer name : 'AV200'
   Components : 'CS4398 CS4362A CS5361 AV200'
   Controls : 16
   Simple ctrls : 9
Date: Fri Nov 6 02:35:37 2009
DistroRelease: Ubuntu 9.10
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
NonfreeKernelModules: fglrx
Package: alsa-base 1.0.20+dfsg-1ubuntu5
PackageArchitecture: all
ProcEnviron:
 LANG=en_CA.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
SourcePackage: alsa-driver
Uname: Linux 2.6.31-14-generic x86_64

[Daniel T Chen (crimsun)]

This symptom is likely due to the MMX code in PulseAudio as shipped in 9.10,
not the sound driver. Please change this bug to affect pulseaudio instead.

On Nov 6, 2009 3:05 AM, "Cheezy" <email address hidden> wrote:

** Attachment added: "AlsaDevices.txt"
  http://launchpadlibrarian.net/35222544/AlsaDevices.txt

** Attachment added: "AplayDevices.txt"
  http://launchpadlibrarian.net/35222546/AplayDevices.txt

** Attachment added: "BootDmesg.txt"
  http://launchpadlibrarian.net/35222547/BootDmesg.txt

** Attachment added: "Card0.Amixer.values.txt"
  http://launchpadlibrarian.net/35222548/Card0.Amixer.values.txt

** Attachment added: "CurrentDmesg.txt"
  http://launchpadlibrarian.net/35222549/CurrentDmesg.txt

** Attachment added: "Dependencies.txt"
  http://launchpadlibrarian.net/35222550/Dependencies.txt

** Attachment added: "PciMultimedia.txt"
  http://launchpadlibrarian.net/35222551/PciMultimedia.txt

** Attachment added: "XsessionErrors.txt"
  http://launchpadlibrarian.net/35222552/XsessionErrors.txt

** Description changed:

Ubuntu 9.10 - sound card: Asus Xonar
+ sound card: Asus Xonar DX

alsa 1.0.20-2ubuntu6 Whenever I adjust the sound through the gnome volume
bar, the sound st...
+ **** List of CAPTURE Hardware Devices ****

+ card 0: DX [Xonar DX], device 0: Multichannel [Multichannel] +
   Subdevices: 1/1 + Subdevice ...
+ USER PID ACCESS COMMAND

+ /dev/snd/controlC0: cheez 2138 F.... pulseaudio + /dev/snd/pcmC0D0p:
cheez 2138 F.....
+ Card hw:0 'DX'/'Asus Virtuoso 100 (rev 2) at 0xe800, irq 16'

+ Mixer name : 'AV200' + Components : 'CS4398 CS4362A CS5361 AV200' +
   Controls : 16 + ...
+ LANG=en_CA.UTF-8

+ SHELL=/bin/bash ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
SourcePackage: alsa-driver ...

-- sound crackles when changing volume
https://bugs.launchpad.net/bugs/476224 You received this bug...

[Jeremy Foshee (jeremyfoshee)]

Declining the Maverick specific nomination for now and leaving this open against the actively developed Ubuntu kernel (which happens to be Maverick at this time). Will re-open the nomination should a fix be narrowed down which we can confirm specifically resolves this issue in Maverick.

~JFo

[Brad Figg (brad-figg)]

This bug was filed against a series that is no longer supported and so is being marked as Won't Fix. If this issue still exists in a supported series, please file a new bug.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.