java - 在 linux(PulseAudio) 上使用混音器打开一行时得到 java.lang.IllegalStateException

Question

这是我在 Ubuntu 11.04 上找到的混音器

Name: PulseAudio Mixer 
Vendor: IcedTea 
Version: 0.02 
Description: the ear-candy mixer

我收到这个错误

Exception in thread "PooledThread-14" java.lang.IllegalStateException: Mixer is already open
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openImpl(PulseAudioMixer.java:650)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:588)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:584)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.open(PulseAudioMixer.java:579)
    at org.classpath.icedtea.pulseaudio.PulseAudioDataLine.open(PulseAudioDataLine.java:95)
    at org.classpath.icedtea.pulseaudio.PulseAudioSourceDataLine.open(PulseAudioSourceDataLine.java:75)
    at sound.SoundManager.threadStarted(SoundManager.java:325)
    at util.ThreadPool$PooledThread.run(ThreadPool.java:141)
Exception in thread "PooledThread-20" java.lang.IllegalStateException: Mixer is already open
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openImpl(PulseAudioMixer.java:650)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:588)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:584)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.open(PulseAudioMixer.java:579)
    at org.classpath.icedtea.pulseaudio.PulseAudioDataLine.open(PulseAudioDataLine.java:95)
    at org.classpath.icedtea.pulseaudio.PulseAudioSourceDataLine.open(PulseAudioSourceDataLine.java:75)
    at sound.SoundManager.threadStarted(SoundManager.java:325)
    at util.ThreadPool$PooledThread.run(ThreadPool.java:141)
Exception in thread "PooledThread-7" java.lang.IllegalStateException: Mixer is already open
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openImpl(PulseAudioMixer.java:650)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:588)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:584)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.open(PulseAudioMixer.java:579)
    at org.classpath.icedtea.pulseaudio.PulseAudioDataLine.open(PulseAudioDataLine.java:95)
    at org.classpath.icedtea.pulseaudio.PulseAudioSourceDataLine.open(PulseAudioSourceDataLine.java:75)
    at sound.SoundManager.threadStarted(SoundManager.java:325)
    at util.ThreadPool$PooledThread.run(ThreadPool.java:141)
Exception in thread "PooledThread-8" java.lang.IllegalStateException: Mixer is already open
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openImpl(PulseAudioMixer.java:650)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:588)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:584)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.open(PulseAudioMixer.java:579)
    at org.classpath.icedtea.pulseaudio.PulseAudioDataLine.open(PulseAudioDataLine.java:95)
    at org.classpath.icedtea.pulseaudio.PulseAudioSourceDataLine.open(PulseAudioSourceDataLine.java:75)
    at sound.SoundManager.threadStarted(SoundManager.java:325)
    at util.ThreadPool$PooledThread.run(ThreadPool.java:141)
Exception in thread "PooledThread-19" java.lang.IllegalStateException: Mixer is already open
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openImpl(PulseAudioMixer.java:650)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:588)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:584)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.open(PulseAudioMixer.java:579)
    at org.classpath.icedtea.pulseaudio.PulseAudioDataLine.open(PulseAudioDataLine.java:95)
    at org.classpath.icedtea.pulseaudio.PulseAudioSourceDataLine.open(PulseAudioSourceDataLine.java:75)
    at sound.SoundManager.threadStarted(SoundManager.java:325)
    at util.ThreadPool$PooledThread.run(ThreadPool.java:141)
Exception in thread "PooledThread-31" java.lang.IllegalStateException: Mixer is already open
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openImpl(PulseAudioMixer.java:650)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:588)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:584)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.open(PulseAudioMixer.java:579)
    at org.classpath.icedtea.pulseaudio.PulseAudioDataLine.open(PulseAudioDataLine.java:95)
    at org.classpath.icedtea.pulseaudio.PulseAudioSourceDataLine.open(PulseAudioSourceDataLine.java:75)
    at sound.SoundManager.threadStarted(SoundManager.java:325)
    at util.ThreadPool$PooledThread.run(ThreadPool.java:141)
Exception in thread "PooledThread-9" java.lang.IllegalStateException: Mixer is already open
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openImpl(PulseAudioMixer.java:650)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:588)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:584)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.open(PulseAudioMixer.java:579)
    at org.classpath.icedtea.pulseaudio.PulseAudioDataLine.open(PulseAudioDataLine.java:95)
    at org.classpath.icedtea.pulseaudio.PulseAudioSourceDataLine.open(PulseAudioSourceDataLine.java:75)
    at sound.SoundManager.threadStarted(SoundManager.java:325)
    at util.ThreadPool$PooledThread.run(ThreadPool.java:141)
Exception in thread "PooledThread-10" java.lang.IllegalStateException: Mixer is already open
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openImpl(PulseAudioMixer.java:650)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:588)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:584)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.open(PulseAudioMixer.java:579)
    at org.classpath.icedtea.pulseaudio.PulseAudioDataLine.open(PulseAudioDataLine.java:95)
    at org.classpath.icedtea.pulseaudio.PulseAudioSourceDataLine.open(PulseAudioSourceDataLine.java:75)
    at sound.SoundManager.threadStarted(SoundManager.java:325)
    at util.ThreadPool$PooledThread.run(ThreadPool.java:141)
Exception in thread "PooledThread-17" java.lang.IllegalStateException: Mixer is already open
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openImpl(PulseAudioMixer.java:650)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:588)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:584)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.open(PulseAudioMixer.java:579)
    at org.classpath.icedtea.pulseaudio.PulseAudioDataLine.open(PulseAudioDataLine.java:95)
    at org.classpath.icedtea.pulseaudio.PulseAudioSourceDataLine.open(PulseAudioSourceDataLine.java:75)
    at sound.SoundManager.threadStarted(SoundManager.java:325)
    at util.ThreadPool$PooledThread.run(ThreadPool.java:141)
Exception in thread "PooledThread-12" java.lang.IllegalStateException: Mixer is already open
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openImpl(PulseAudioMixer.java:650)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:588)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:584)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.open(PulseAudioMixer.java:579)
    at org.classpath.icedtea.pulseaudio.PulseAudioDataLine.open(PulseAudioDataLine.java:95)
    at org.classpath.icedtea.pulseaudio.PulseAudioSourceDataLine.open(PulseAudioSourceDataLine.java:75)
    at sound.SoundManager.threadStarted(SoundManager.java:325)
    at util.ThreadPool$PooledThread.run(ThreadPool.java:141)
Exception in thread "PooledThread-11" java.lang.IllegalStateException: Mixer is already open
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openImpl(PulseAudioMixer.java:650)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:588)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:584)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.open(PulseAudioMixer.java:579)
    at org.classpath.icedtea.pulseaudio.PulseAudioDataLine.open(PulseAudioDataLine.java:95)
    at org.classpath.icedtea.pulseaudio.PulseAudioSourceDataLine.open(PulseAudioSourceDataLine.java:75)
    at sound.SoundManager.threadStarted(SoundManager.java:325)
    at util.ThreadPool$PooledThread.run(ThreadPool.java:141)
Exception in thread "PooledThread-18" java.lang.IllegalStateException: Mixer is already open
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openImpl(PulseAudioMixer.java:650)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:588)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:584)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.open(PulseAudioMixer.java:579)
    at org.classpath.icedtea.pulseaudio.PulseAudioDataLine.open(PulseAudioDataLine.java:95)
    at org.classpath.icedtea.pulseaudio.PulseAudioSourceDataLine.open(PulseAudioSourceDataLine.java:75)
    at sound.SoundManager.threadStarted(SoundManager.java:325)
    at util.ThreadPool$PooledThread.run(ThreadPool.java:141)
Exception in thread "PooledThread-13" java.lang.IllegalStateException: Mixer is already open
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openImpl(PulseAudioMixer.java:650)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:588)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:584)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.open(PulseAudioMixer.java:579)
    at org.classpath.icedtea.pulseaudio.PulseAudioDataLine.open(PulseAudioDataLine.java:95)
    at org.classpath.icedtea.pulseaudio.PulseAudioSourceDataLine.open(PulseAudioSourceDataLine.java:75)
    at sound.SoundManager.threadStarted(SoundManager.java:325)
    at util.ThreadPool$PooledThread.run(ThreadPool.java:141)
Exception in thread "PooledThread-16" java.lang.IllegalStateException: Mixer is already open
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openImpl(PulseAudioMixer.java:650)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:588)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:584)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.open(PulseAudioMixer.java:579)
    at org.classpath.icedtea.pulseaudio.PulseAudioDataLine.open(PulseAudioDataLine.java:95)
    at org.classpath.icedtea.pulseaudio.PulseAudioSourceDataLine.open(PulseAudioSourceDataLine.java:75)
    at sound.SoundManager.threadStarted(SoundManager.java:325)
    at util.ThreadPool$PooledThread.run(ThreadPool.java:141)
Exception in thread "PooledThread-15" java.lang.IllegalStateException: Mixer is already open
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openImpl(PulseAudioMixer.java:650)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:588)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:584)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.open(PulseAudioMixer.java:579)
    at org.classpath.icedtea.pulseaudio.PulseAudioDataLine.open(PulseAudioDataLine.java:95)
    at org.classpath.icedtea.pulseaudio.PulseAudioSourceDataLine.open(PulseAudioSourceDataLine.java:75)
    at sound.SoundManager.threadStarted(SoundManager.java:325)
    at util.ThreadPool$PooledThread.run(ThreadPool.java:141)
Exception in thread "PooledThread-25" java.lang.IllegalStateException: Mixer is already open
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openImpl(PulseAudioMixer.java:650)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:588)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:584)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.open(PulseAudioMixer.java:579)
    at org.classpath.icedtea.pulseaudio.PulseAudioDataLine.open(PulseAudioDataLine.java:95)
    at org.classpath.icedtea.pulseaudio.PulseAudioSourceDataLine.open(PulseAudioSourceDataLine.java:75)
    at sound.SoundManager.threadStarted(SoundManager.java:325)
    at util.ThreadPool$PooledThread.run(ThreadPool.java:141)
Exception in thread "PooledThread-21" java.lang.IllegalStateException: Mixer is already open
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openImpl(PulseAudioMixer.java:650)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:588)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:584)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.open(PulseAudioMixer.java:579)
    at org.classpath.icedtea.pulseaudio.PulseAudioDataLine.open(PulseAudioDataLine.java:95)
    at org.classpath.icedtea.pulseaudio.PulseAudioSourceDataLine.open(PulseAudioSourceDataLine.java:75)
    at sound.SoundManager.threadStarted(SoundManager.java:325)
    at util.ThreadPool$PooledThread.run(ThreadPool.java:141)
Exception in thread "PooledThread-29" java.lang.IllegalStateException: Mixer is already open
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openImpl(PulseAudioMixer.java:650)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:588)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:584)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.open(PulseAudioMixer.java:579)
    at org.classpath.icedtea.pulseaudio.PulseAudioDataLine.open(PulseAudioDataLine.java:95)
    at org.classpath.icedtea.pulseaudio.PulseAudioSourceDataLine.open(PulseAudioSourceDataLine.java:75)
    at sound.SoundManager.threadStarted(SoundManager.java:325)
    at util.ThreadPool$PooledThread.run(ThreadPool.java:141)
Exception in thread "PooledThread-26" java.lang.IllegalStateException: Mixer is already open
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openImpl(PulseAudioMixer.java:650)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:588)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:584)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.open(PulseAudioMixer.java:579)
    at org.classpath.icedtea.pulseaudio.PulseAudioDataLine.open(PulseAudioDataLine.java:95)
    at org.classpath.icedtea.pulseaudio.PulseAudioSourceDataLine.open(PulseAudioSourceDataLine.java:75)
    at sound.SoundManager.threadStarted(SoundManager.java:325)
    at util.ThreadPool$PooledThread.run(ThreadPool.java:141)
Exception in thread "PooledThread-23" java.lang.IllegalStateException: Mixer is already open
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openImpl(PulseAudioMixer.java:650)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:588)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:584)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.open(PulseAudioMixer.java:579)
    at org.classpath.icedtea.pulseaudio.PulseAudioDataLine.open(PulseAudioDataLine.java:95)
    at org.classpath.icedtea.pulseaudio.PulseAudioSourceDataLine.open(PulseAudioSourceDataLine.java:75)
    at sound.SoundManager.threadStarted(SoundManager.java:325)
    at util.ThreadPool$PooledThread.run(ThreadPool.java:141)
Exception in thread "PooledThread-24" java.lang.IllegalStateException: Mixer is already open
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openImpl(PulseAudioMixer.java:650)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:588)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:584)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.open(PulseAudioMixer.java:579)
    at org.classpath.icedtea.pulseaudio.PulseAudioDataLine.open(PulseAudioDataLine.java:95)
    at org.classpath.icedtea.pulseaudio.PulseAudioSourceDataLine.open(PulseAudioSourceDataLine.java:75)
    at sound.SoundManager.threadStarted(SoundManager.java:325)
    at util.ThreadPool$PooledThread.run(ThreadPool.java:141)
Exception in thread "PooledThread-22" java.lang.IllegalStateException: Mixer is already open
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openImpl(PulseAudioMixer.java:650)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:588)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:584)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.open(PulseAudioMixer.java:579)
    at org.classpath.icedtea.pulseaudio.PulseAudioDataLine.open(PulseAudioDataLine.java:95)
    at org.classpath.icedtea.pulseaudio.PulseAudioSourceDataLine.open(PulseAudioSourceDataLine.java:75)
    at sound.SoundManager.threadStarted(SoundManager.java:325)
    at util.ThreadPool$PooledThread.run(ThreadPool.java:141)
Exception in thread "PooledThread-1" java.lang.IllegalStateException: Mixer is already open
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openImpl(PulseAudioMixer.java:650)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:588)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:584)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.open(PulseAudioMixer.java:579)
    at org.classpath.icedtea.pulseaudio.PulseAudioDataLine.open(PulseAudioDataLine.java:95)
    at org.classpath.icedtea.pulseaudio.PulseAudioSourceDataLine.open(PulseAudioSourceDataLine.java:75)
    at sound.SoundManager.threadStarted(SoundManager.java:325)
    at util.ThreadPool$PooledThread.run(ThreadPool.java:141)
Exception in thread "PooledThread-27" java.lang.IllegalStateException: Mixer is already open
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openImpl(PulseAudioMixer.java:650)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:588)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:584)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.open(PulseAudioMixer.java:579)
    at org.classpath.icedtea.pulseaudio.PulseAudioDataLine.open(PulseAudioDataLine.java:95)
    at org.classpath.icedtea.pulseaudio.PulseAudioSourceDataLine.open(PulseAudioSourceDataLine.java:75)
    at sound.SoundManager.threadStarted(SoundManager.java:325)
    at util.ThreadPool$PooledThread.run(ThreadPool.java:141)
Exception in thread "PooledThread-0" java.lang.IllegalStateException: Mixer is already open
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openImpl(PulseAudioMixer.java:650)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:588)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:584)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.open(PulseAudioMixer.java:579)
    at org.classpath.icedtea.pulseaudio.PulseAudioDataLine.open(PulseAudioDataLine.java:95)
    at org.classpath.icedtea.pulseaudio.PulseAudioSourceDataLine.open(PulseAudioSourceDataLine.java:75)
    at sound.SoundManager.threadStarted(SoundManager.java:325)
    at util.ThreadPool$PooledThread.run(ThreadPool.java:141)
Exception in thread "PooledThread-2" java.lang.IllegalStateException: Mixer is already open
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openImpl(PulseAudioMixer.java:650)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:588)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:584)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.open(PulseAudioMixer.java:579)
    at org.classpath.icedtea.pulseaudio.PulseAudioDataLine.open(PulseAudioDataLine.java:95)
    at org.classpath.icedtea.pulseaudio.PulseAudioSourceDataLine.open(PulseAudioSourceDataLine.java:75)
    at sound.SoundManager.threadStarted(SoundManager.java:325)
    at util.ThreadPool$PooledThread.run(ThreadPool.java:141)
Exception in thread "PooledThread-4" java.lang.IllegalStateException: Mixer is already open
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openImpl(PulseAudioMixer.java:650)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:588)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:584)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.open(PulseAudioMixer.java:579)
    at org.classpath.icedtea.pulseaudio.PulseAudioDataLine.open(PulseAudioDataLine.java:95)
    at org.classpath.icedtea.pulseaudio.PulseAudioSourceDataLine.open(PulseAudioSourceDataLine.java:75)
    at sound.SoundManager.threadStarted(SoundManager.java:325)
    at util.ThreadPool$PooledThread.run(ThreadPool.java:141)
Exception in thread "PooledThread-28" Exception in thread "PooledThread-3" java.lang.IllegalStateException: Mixer is already open
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openImpl(PulseAudioMixer.java:650)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:588)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:584)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.open(PulseAudioMixer.java:579)
    at org.classpath.icedtea.pulseaudio.PulseAudioDataLine.open(PulseAudioDataLine.java:95)
    at org.classpath.icedtea.pulseaudio.PulseAudioSourceDataLine.open(PulseAudioSourceDataLine.java:75)
    at sound.SoundManager.threadStarted(SoundManager.java:325)
    at util.ThreadPool$PooledThread.run(ThreadPool.java:141)
Exception in thread "PooledThread-5" java.lang.IllegalStateException: Mixer is already open
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openImpl(PulseAudioMixer.java:650)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:588)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:584)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.open(PulseAudioMixer.java:579)
    at org.classpath.icedtea.pulseaudio.PulseAudioDataLine.open(PulseAudioDataLine.java:95)
    at org.classpath.icedtea.pulseaudio.PulseAudioSourceDataLine.open(PulseAudioSourceDataLine.java:75)
    at sound.SoundManager.threadStarted(SoundManager.java:325)
    at util.ThreadPool$PooledThread.run(ThreadPool.java:141)
Exception in thread "PooledThread-6" java.lang.IllegalStateException: Mixer is already open
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openImpl(PulseAudioMixer.java:650)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:588)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:584)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.open(PulseAudioMixer.java:579)
    at org.classpath.icedtea.pulseaudio.PulseAudioDataLine.open(PulseAudioDataLine.java:95)
    at org.classpath.icedtea.pulseaudio.PulseAudioSourceDataLine.open(PulseAudioSourceDataLine.java:75)
    at sound.SoundManager.threadStarted(SoundManager.java:325)
    at util.ThreadPool$PooledThread.run(ThreadPool.java:141)
java.lang.IllegalStateException: Mixer is already open
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openImpl(PulseAudioMixer.java:650)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:588)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.openLocal(PulseAudioMixer.java:584)
    at org.classpath.icedtea.pulseaudio.PulseAudioMixer.open(PulseAudioMixer.java:579)
    at org.classpath.icedtea.pulseaudio.PulseAudioDataLine.open(PulseAudioDataLine.java:95)
    at org.classpath.icedtea.pulseaudio.PulseAudioSourceDataLine.open(PulseAudioSourceDataLine.java:75)
    at sound.SoundManager.threadStarted(SoundManager.java:325)
    at util.ThreadPool$PooledThread.run(ThreadPool.java:141)

当我使用 linux（ubuntu 11.04）测试时，我使用 JAVA 创建游戏，混音器只有 1 行，所以我不能同时播放声音。我从网上得知 pulseAudio 有 -1 线，这意味着它有无限的线，所以我尝试使用那个混音器。但是当我打开一条线时，我得到了那个错误。

怎么解决？？？

score 2 · Accepted Answer

I've got a similar error. It seems that the PulseAudio Mixer is not thread safe in this manner. I solved it by externally synchonizing on the AudioSystem.getSourceDataLine() call.

score 1 · Accepted Answer

我在我的 linux box (mint) 上也遇到了类似的问题，这在 windows 上没有发生。我发现从 openJDK 和 JRE 切换到 sunJDK 和 JRE 解决了我的问题。

你可以去这里https://askubuntu.com/questions/21131/how-to-correctly-remove-openjdk-and-jre-and-set-the-system-use-only-and-only-sun了解更多信息.

java - 在 linux(PulseAudio) 上使用混音器打开一行时得到 java.lang.IllegalStateException

2 回答 2

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