Quoting Hans Petter Selasky <h...@selasky.org> (from Sun, 8 Oct 2017 23:44:27 +0200):

Can you trace that with:

usbdump -i usbusX -f Y -v

?

What rates are supported. Can you try 48000 Hz?

44100 and 48000. The attached usbdumps are with 48000 Hz. The "1" is with 32bit audio output, the "2" with 16bit audio output.

This is what is reported in dmesg:
---snip---
uaudio0 on uhub3
uaudio0: <Creative Technology SB Live 24-bit External, class 0/0, rev 1.10/1.00, addr 2> on usbus5
uaudio0: Play: 48000 Hz, 4 ch, 24-bit S-LE PCM format, 2x8ms buffer.
uaudio0: Play: 44100 Hz, 4 ch, 24-bit S-LE PCM format, 2x8ms buffer.
uaudio0: Record: 96000 Hz, 2 ch, 24-bit S-LE PCM format, 2x8ms buffer.
uaudio0: Record: 48000 Hz, 2 ch, 24-bit S-LE PCM format, 2x8ms buffer.
uaudio0: Record: 44100 Hz, 2 ch, 24-bit S-LE PCM format, 2x8ms buffer.
uaudio0: No MIDI sequencer.
pcm2: <USB audio> on uaudio0
uaudio0: No HID volume keys found.
---snip---

As this is a 5.1 device, I would expect 6 channels, not 4 (the config descriptor dump is in my initial mail).

Bye,
Alexander.

--
http://www.Leidinger.net alexan...@leidinger.net: PGP 0x8F31830F9F2772BF
http://www.FreeBSD.org    netch...@freebsd.org  : PGP 0x8F31830F9F2772BF

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