Hi,

I'm trying to solve a strange problem with my USB audio interface 
(M-Audio Audiophile USB) and ALSA.  It only works if the snd-usb-audio 
module is unloaded, and I then plug in the interface and let hotplug 
load snd-usb-audio.

If I plug in the interface when snd-usb-audio is already loaded, OR I 
manually modprobe snd-usb-audio (or /etc/init.d/alsasound start) when 
the interface is already plugged in, any sound I try to play comes out 
as noise.  I also get a bunch of lines like this periodically in 
/var/log/debug:

Aug  7 01:58:12 pured8a kernel: usb.c: usb-check-bandwidth would have 
FAILED: was 826, would be 940, bustime = 114 us

What could be the difference between hotplug loading the driver and a 
modprobe that happens any other way?  I've asked the developers on the 
alsa-devel mailinglist about the noise problem and they don't know 
what's causing it.

I'm using ALSA 0.9.6 with kernel 2.4.21, hotplug 0.0.20030501.

Thanks,
Ben



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