Public bug reported:

Binary package hint: pulseaudio

Release: Ubuntu 8.10 Intrepid on x86, Thinkpad T43p laptop.
pulseaudio version: 0.9.10-2ubuntu9

When a USB audio box (M-Audio Audiophile USB) is inserted, pulseaudio HAL 
module correctly notices it and adds it. It gets named "front:1", shows up in 
pavucontrol, I can send or move audio streams to it, etc. When the USB device 
is removed (regardless of whether any streams or clients are connected to the 
server) it isn't removed; it remains visible in pavucontrol, you can still 
assign streams to it.  If you reattach the USB device, a new instance is 
detected and probed, 
and also named "front:1". I can remove and reattach it over and over, and 
accumulate many "front:1" instances. 

This isn't happening from the point of view of ALSA - /proc/asound/cards
lists only one instance when the device is attached, and none when it
isn't.

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

-- 
pulseaudio doesn't notice removal of USB audio device
https://bugs.launchpad.net/bugs/295015
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