Ubuntu
pulseaudio package

[Karmic] Audio is nothing but static

Bug #432506 reported by Taylor "Ripps" LeMasurier-Wren
26
This bug affects 4 people
Affects Status Importance Assigned to Milestone
pulseaudio (Ubuntu)
Fix Released
Undecided
Unassigned

Bug Description

Binary package hint: pulseaudio

To be honest, I'm not sure if this is actually a pulse issue, but the problem began with a pulseaudio upgrade this morning.
When using either alsa or pulseaudio output, sound is nothing but static. However, if I use OSS, than sound is correct.

I get this over and over again in my messages log:
Sep 18 08:26:41 ripps-desktop pulseaudio[2674]: reserve-wrap.c: Failed to acquire reservation lock on device 'Audio0': Input/output error
Sep 18 08:26:46 ripps-desktop pulseaudio[2674]: ratelimit.c: 383 events suppressed

ProblemType: Bug
Architecture: i386
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: ripps 2674 F.... pulseaudio
 /dev/snd/controlC1: ripps 2674 F.... pulseaudio
Card0.Amixer.info:
 Card hw:0 'Live'/'SB Live! 5.1 (rev.7, serial:0x80641102) at 0xc000, irq 16'
   Mixer name : 'eMicro EM28028'
   Components : 'AC97a:454d4328'
   Controls : 216
   Simple ctrls : 38
Card1.Amixer.info:
 Card hw:1 'CX8801'/'Conexant CX8801 at 0xeb000000'
   Mixer name : 'CX88'
   Components : ''
   Controls : 3
   Simple ctrls : 2
Date: Fri Sep 18 08:57:00 2009
DistroRelease: Ubuntu 9.10
Package: pulseaudio 1:0.9.17-0ubuntu2
ProcEnviron:
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-10.34-generic
SourcePackage: pulseaudio
Uname: Linux 2.6.31-10-generic i686

Revision history for this message
Taylor "Ripps" LeMasurier-Wren (ripps818) wrote :
Revision history for this message
Taylor "Ripps" LeMasurier-Wren (ripps818) wrote :

Okay, I found out that I can use alsa, but only when I specifically specify device 0, otherwise programs that just use generic alsa interface will switch between static and sound as volume changes.
So, this might be an issue with how pulseaudio interfaces with alsa.

Revision history for this message
NeverMind (agathe-durieux) wrote :

Same bug, my sound card make a ugly noise since my last update.
If I downgrade it works.

sudo dpkg -i /var/cache/apt/archives/pulseaudio-esound-compat_1%3a0.9.17-0ubuntu1_i386.deb
sudo dpkg -i /var/cache/apt/archives/pulseaudio-module-udev_1%3a0.9.17-0ubuntu1_i386.deb
sudo dpkg -i /var/cache/apt/archives/pulseaudio-utils_1%3a0.9.17-0ubuntu1_i386.deb
sudo dpkg -i /var/cache/apt/archives/pulseaudio-module-x11_1%3a0.9.17-0ubuntu1_i386.de

sudo dpkg -i /var/cache/apt/archives/libpulse0_1%3a0.9.17-0ubuntu1_i386.deb
sudo dpkg -i /var/cache/apt/archives/libpulse-browse0_1%3a0.9.17-0ubuntu1_i386.deb
sudo dpkg -i /var/cache/apt/archives/libpulse-dev_1%3a0.9.17-0ubuntu1_i386.deb
sudo dpkg -i /var/cache/apt/archives/libpulse-mainloop-glib0_1%3a0.9.17-0ubuntu1_i386.deb

sudo dpkg -i /var/cache/apt/archives/pulseaudio_1%3a0.9.17-0ubuntu1_i386.deb
sudo dpkg -i /var/cache/apt/archives/pulseaudio-module-udev_1%3a0.9.17-0ubuntu1_i386.deb

Revision history for this message
Taylor "Ripps" LeMasurier-Wren (ripps818) wrote :

Okay, following the advice of someone on IRC, I added tsched=0 after "load module module-udev-detect" in /etc/pulse/default.pa and added "export PULSE_NO_SIMD=1" to my .bashrc. However it didn't seem to fix it until I ran "pulseaudio -k; pulseaudio -vvv".

After that I though sound was fixed, however, when I killed pulse again and allowed it to be autospawn, the static came back.

It turns out that pulseaudio only works when I start it manually, but not when it's autospawned.

Revision history for this message
Taylor "Ripps" LeMasurier-Wren (ripps818) wrote :

There seems to have been a similar problem in Mandriva:
https://qa.mandriva.com/show_bug.cgi?id=53870

It seems to have been fixed by removing commit 3d5a572694388008fd4cf522699fc6c431f97325 from pulseaudio 0.9.18.

Revision history for this message
Taylor "Ripps" LeMasurier-Wren (ripps818) wrote :

I reinstalled my system and installed the latest pulseaudio and the problem seems to have been resolved.
It looks like the latest update removed the commit I mentioned in my previous post.

Daniel T Chen (crimsun)
Changed in pulseaudio (Ubuntu):
status: New → Fix Released
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