Bug 709402

Summary:	pulseaudio dies and only crackles after multiple sound sources play at once.
Product:	[Fedora] Fedora	Reporter:	Kev 'Kyrian' Green <kyrian>
Component:	pulseaudio	Assignee:	Lennart Poettering <lpoetter>
Status:	CLOSED WONTFIX	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	low	Docs Contact:
Priority:	unspecified
Version:	14	CC:	g0tt, lkundrak, lpoetter, skr
Target Milestone:	---
Target Release:	---
Hardware:	x86_64
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2012-08-16 14:08:15 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:

Description Kev 'Kyrian' Green 2011-05-31 15:58:42 UTC

Description of problem:

Whenever multiple sound sources happened at the same time, eg. youtube, and rhythmbox, pidgin/skype and rhythmbox, pulseaudio would somehow die and only generate crackling instead of the right sounds. This was with an intel 'hda' built-in soundcard.

Version-Release number of selected component (if applicable):

pulseaudio-0.9.21-7.fc14.x86_64
kernel-2.6.35.13-91.fc14.x86_64

How reproducible:

Happens 3-10 times a day or so in normal use for me.

Steps to Reproduce:
1. Play a song in rhythmbox.
2. Play something else in a flash plugin page, or make pidgin/skype beep at you, or cause a keyboard/system bell warning.
3. Crackling instead of sound.
  
Actual results:

Crackling instead of sound, only correctable by stopping all sound, then doing 'pulseaudio -k' and waiting a while and then reloading the flash page or restarting the song in rhytmbox as applicable.

Expected results:

Multiple things play at once, it's messy and you can't hear things properly, but you can hear what you'd expect, rather than just crackling.

Additional info:

It seems that it works fine with an SB Live card and the 'hda' thing disabled.

I've already tried the whole kernel options thing, and this happens even with all the following kernel args:

acpi=off snd_hda_intel.enable_msi=1 pci=msi,check_enable_amd_mmconf noapic snd_hda_intel.power_save=0 snd_hda_intel.position_fix=1

Comment 1 Thomas Arnold 2012-01-10 07:42:33 UTC

My sound crackles too. In F15 on my EeePC 901, but it seems nobody cares. 
Killing pulse audio and letting systemd start it again fixes the issue for a while.

Comment 2 Sebastian Krämer 2012-05-16 09:00:40 UTC

One more.

Thanks to this bug report, I noticed that indeed the sound starts being "static" after a second sound source kicks in (play mp3 + open youtube video). I also have this issue sometimes after resuming from suspend-to-ram (where I still can't pinpoint a reprodicible scenario).

I'm on F17 Beta (blocker?!) with audio being from a "ATI Technologies Inc RS880 Audio Device [Radeon HD 4200]" device. The snd_hda_intel module is loaded so I assume it's using that one.

Could anyone else check with recent Fedora versions and then bump the version number in the bug report?

Comment 3 Sebastian Krämer 2012-05-18 11:19:53 UTC

Maybe it's helpful for problem-solving that this issue also often appears after skipping audio (mplayer, youtube).

Comment 4 Fedora End Of Life 2012-08-16 14:08:18 UTC

This message is a notice that Fedora 14 is now at end of life. Fedora 
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