On October 29, 2009 06:49:53 pm Shawn Starr wrote:

Hello ALSA developers,

I seem have noticed a problem with USB audio buffering. Prior to using *buntu, which uses ALSA 1.2.20 I had no problems with using my USB webcam for audio. When I switched to Debian, which uses ALSA 1.2.21a I noticed USB audio became choppy.

The device in question is a QuickCam Pro 9000 webcam.

I can confirm this to be the case since taking the 1.2.20 source and rebuilding it on Debian causes the audio choppiness problem to stop.

Thanks, Shawn.

The ID in question is:

Bus 002 Device 003: ID 046d:0990 Logitech, Inc. QuickCam Pro 9000

I am looking at .20 and .21[a] code to see what the regression is,

Thanks, Shawn.