usb2 and audio?

I get the following when I plug my headphones into my usb2 hub:

uaudio0: Logitech Logitech USB Headset, rev 1.10/10.12, addr 5
uaudio0: ignored input endpoint of type adaptive
uaudio0: audio rev 1.00
pcm1: <USB Audio> on uaudio0
record channel supported format list invalid
pcm1: chn_init(pcm1:record:0) failed: err = 19
pcm1: pcm_chn_create(ua_chan, -1, 0xc401f880) failed
usb3: *** WARNING: opening low/full speed device, this does not work yet.
usb3: *** WARNING: opening low/full speed device, this does not work yet.
usb3: *** WARNING: opening low/full speed device, this does not work yet.

... whereas my mouse (low speed) and other usb 2.0 devices work.

Also... when I plug the headset into the laptops port directly, it
works ... and the probe looks identical (includingt the complaints).

Dave.

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|David Gilbert, Independent Contractor.       | Two things can only be     |
|Mail:       dave_at_daveg.ca                    |  equal if and only if they |
|http://daveg.ca                              |   are precisely opposite.  |
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