As an update, I found the following from dmesg:
snd-bt-sco revision 1.12 $
snd-bt-sco: snd-bt-scod thread starting
snd-bt-sco: playback_open
snd-bt-sco: prepare ok bps: 16000 size: 16002 count: 4000
snd-bt-sco: playback_trigger 1
snd-bt-sco: setting playback to bspcm
Bluetooth: SCO (Voice Link) ver 0.5
Bluetooth: SCO socket layer initialized
snd-bt-sco: Shift problem detected! Fixing to 1.
snd-bt-sco: Shift problem detected! Fixing to 0.
... (continued for a while)
snd-bt-sco: Shift problem detected! Fixing to 0.
snd-bt-sco: Shift problem detected! Fixing to 1.
snd-bt-sco: Shift problem detected! Fixing to 0.
snd-bt-sco: Shift problem detected! Fixing to 1.
snd-bt-sco: Shift problem detected! Fixing to 0.
snd-bt-sco: playback_trigger 0
snd-bt-sco: setting playback to NULL
snd-bt-sco: Disposing of previous socket count 3
snd-bt-sco: file_count is 1 (expected 3)


On Sat, 2006-11-04 at 10:30 -0500, Jon Barnett wrote:
> I have kernel 2.6.18.1. I recently upgraded alsa both in the kernel
> and userland to 1.0.13.