Bug 520155

Summary:	KDE sound system blocks other alsa output
Product:	[Fedora] Fedora	Reporter:	Andreas Schwab <schwab>
Component:	kdebase	Assignee:	Than Ngo <than>
Status:	CLOSED DUPLICATE	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	medium	Docs Contact:
Priority:	low
Version:	11	CC:	fedora, jreznik, kevin, lorenzo, ltinkl, rdieter, smparrish, than
Target Milestone:	---
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Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2009-08-28 21:21:59 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Andreas Schwab 2009-08-28 16:26:10 UTC

Description of problem:
While Amarok is playing no other process is able to open the alsa channel.  This is probably not a problem with Amarok, but with the KDE sound system.

Version-Release number of selected component (if applicable):
phonon-4.3.1-6.fc11.x86_64

Additional info:
$ aplay /usr/share/sounds/alsa/Front_Center.wav
ALSA lib pcm_dmix.c:1008:(snd_pcm_dmix_open) unable to open slave
aplay: main:608: audio open error: Device or resource busy

Comment 1 Rex Dieter 2009-08-28 16:32:00 UTC

Are you not using pulseaudio?

ie, is kde-settings-pulseaudio installed?

If not, that's the problem, and expectation when pa is not used.

Comment 2 Andreas Schwab 2009-08-28 16:53:18 UTC

With pulseaudio I get nothing but silence.

Comment 3 Andreas Schwab 2009-08-28 16:57:23 UTC

I have no problem with two parallel aplay once KDE has let off the device.

Comment 4 Kevin Kofler 2009-08-28 21:21:59 UTC

You have the default set up to dmix. This doesn't work with Phonon-Xine out of the box. Your options right now (until that bug gets fixed) are to either switch to Phonon-GStreamer or write a small config file to make dmix visible to Phonon-Xine. This is documented in the bug I'm closing this as a duplicate of.

*** This bug has been marked as a duplicate of bug 474259 ***