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[Launchpad Bug Tracker <407299@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package openjdk-6 - 6b16-1.6.1-1ubuntu1

---------------
openjdk-6 (6b16-1.6.1-1ubuntu1) karmic; urgency=low

  * Fix dependency on the java bridge packages.
  * debian/rules: Conditionalize stuff so that the recent release
    is never mentioned.
  * Remove obsolete patches in debian/patches.
  * Rebuild on armel to fix up libffi for the soft float abi.
  * For jaunty builds, fix IcedTeaPlugin failure to start with xulrunner 1.9.1
    (LP: #359407).
    - debian/patches/icedtea-plugin-use-runtime-nsIProcess-IID.diff: Add.
    - debian/rules: Apply it for jaunty builds.
  * Use pulseaudio as default serviceprovider for
    javax.sound.midi.MidiSystem and javax.sound.sampled.AudioSystem.
    LP: #407299.

 -- Matthias Klose <doko@xxxxxxxxxx>   Sat, 26 Sep 2009 16:01:48 +0200

** Changed in: openjdk-6 (Ubuntu)
       Status: New => Fix Released

-- 
openjdk should use pulseaudio by default
https://bugs.launchpad.net/bugs/407299
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Status in “openjdk-6” package in Ubuntu: Fix Released

Bug description:
openjdk-6-jre-headless use alsa by default. This brake things on karmic where pulseaudio is default sound system (choppy sound and more). The fix is simple:
edit /etc/java-6-openjdk/sound.properties and change 

javax.sound.sampled.Clip=com.sun.media.sound.DirectAudioDeviceProvider
javax.sound.sampled.Port=com.sun.media.sound.PortMixerProvider
javax.sound.sampled.SourceDataLine=com.sun.media.sound.DirectAudioDeviceProvider
javax.sound.sampled.TargetDataLine=com.sun.media.sound.DirectAudioDeviceProvider

to

javax.sound.sampled.Clip=org.classpath.icedtea.pulseaudio.PulseAudioMixerProvider
javax.sound.sampled.Port=org.classpath.icedtea.pulseaudio.PulseAudioMixerProvider
javax.sound.sampled.SourceDataLine=org.classpath.icedtea.pulseaudio.PulseAudioMixerProvider
javax.sound.sampled.TargetDataLine=org.classpath.icedtea.pulseaudio.PulseAudioMixerProvider


To reproduce try to use josm (javaopenstreetmap)  and load some sound file... this will brake sound if you press pause and play again. After this fix, every thing working fine.


lsb_release -rd
Description:	Ubuntu karmic (development branch)
Release:	9.10

apt-cache policy openjdk-6-jre-headless
openjdk-6-jre-headless:
  Installiert: 6b16~pre4-0ubuntu7
  Kandidat: 6b16~pre4-0ubuntu7
  Versions-Tabelle:
 *** 6b16~pre4-0ubuntu7 0
        500 http://de.archive.ubuntu.com karmic/main Packages
        100 /var/lib/dpkg/status