Bug 195459 - Surround sound failure 4.0/5.1 - all apps
Summary: Surround sound failure 4.0/5.1 - all apps
Status: RESOLVED FIXED
Alias: None
Product: Phonon
Classification: Frameworks and Libraries
Component: Xine backend (show other bugs)
Version: 4.3.0 (KDE 4.2.0)
Platform: Slackware Linux
: NOR normal
Target Milestone: ---
Assignee: Matthias Kretz
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2009-06-06 14:34 UTC by Andrew
Modified: 2010-12-05 21:42 UTC (History)
1 user (show)

See Also:
Latest Commit:
Version Fixed In: 4.4.2


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Description Andrew 2009-06-06 14:34:26 UTC
Version:            (using KDE 4.2.3)
OS:                Linux
Installed from:    Slackware Packages

Phonon or it's backend to Xine-lib does not support surround sound (only stereo).

To test so as follows. Use xine-ui (direct interface to xine-lib) and select "Speaker 4.0" or 5.1 as output. Play a source and it will work (you will have to use xine-ui without loading ANY phonon app otherwise Phonon locks the output and xine-ui will have no sound).

After doing this check the xine config file and copy over the speaker-output line to Phonon-xine.xine.conf in .config/kde-org/Phonon...

Now logout and login so that Phonon is refreshed. Run Xaffeine or Dragon Player and run a 5.1 source. The application will freeze or "stop" after 2 or 3 seconds. No audio output will be heard.

Cause: Phonon is opening the pcm "default" device and ignoring the correct plug:surround40 and plug:surround51 setting.

Symptoms: Surround sound in KDE4 is not possible.

Other notes: xine-ui and any other app that uses the xine-ui interface will no longer work while phonon has locked the output. A logout & login will cure it.
Comment 1 Myriam Schweingruber 2010-04-06 12:46:54 UTC
Is this still valid with KDE SC 4.4.2/Phonon 4.4.0?
Comment 2 Myriam Schweingruber 2010-05-03 10:17:14 UTC
Closing for lack of feedback.