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[أحمد المحمودي (Ahmed El-Mahmoudy) <aelmahmoudy@xxxxxxxxxxxxxxxxxxxxx>]

Hello,

  I had a problem with the default setting of pulseaudio being the
default serviceprovider for audio in openjdk, so I alternate values in
/etc/java-6-openjdk/sound.properties to get my problem fixed.

Please look at LP: #491784

-- 
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