Public bug reported:

Binary package hint: pulseaudio

Okay, until now nothing particularly dangerous happens, but potentially,
it might.

I upgraded to jaunty and it installed latest pulseaudio (0.9.13) and alsa 
(1.0.18).
After 20 minutes or so of playback using banshee, through pulseaudio, my laptop 
starts making a worrying noise, like when you try to set a video frequency too 
high. It's a low "frigging" sound. Needless to say, it makes me frightened 
something's going to heaven.

It's also quite audible and annoying to hear, also leaving the volume
on.

Killing pulseaudio from the console does stop it. Exiting banshee or whatever 
else doesn't help, though.
Maybe something with the new gapless-playback pulseaudio stuff?


00:1f.5 Multimedia audio controller: Intel Corporation 82801DB/DBL/DBM 
(ICH4/ICH4-L/ICH4-M) AC'97 Audio Controller (rev 01)

** Affects: pulseaudio (Ubuntu)
     Importance: Undecided
         Status: New

-- 
[jaunty] hardware starts making worrying noise after some audio playback
https://bugs.launchpad.net/bugs/300293
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