kern/158979: [snd_uadio] snd_uaudio fails to initialize built-in microphone in Logitech Webcam C160

[Dmytro Pryanyshnikov]

The following reply was made to PR kern/158979; it has been noted by GNATS.

From: Dmytro Pryanyshnikov <lynx.ripe at gmail.com>
To: Hans Petter Selasky <hselasky at c2i.net>
Cc: bug-followup at freebsd.org
Subject: Re: kern/158979: [snd_uadio] snd_uaudio fails to initialize built-in
 microphone in Logitech Webcam C160
Date: Sun, 17 Jul 2011 18:08:13 +0300

 On Sun, Jul 17, 2011 at 2:01 PM, Hans Petter Selasky <hselasky at c2i.net> wrote:
 > I think one of the following requests should do the trick. Please let me know
 > the test result:
 
 Yes, that's it! So, after plugging the device in, the following steps
 make the microphone working with the normal sensitivity:
 
 1) launch and exit pwcview;
 
 2) usbconfig -d ugen4.2 do_request 0x22 0x01 0x100 0x86 0x03 0x80 0xBB 0x00
 
 3) one of the following (I don't hear differences - either command
 "unlocks" the microphone sensitivity):
 
 > usbconfig -d X.Y do_request 0x21 0x01 0x0200 0x0502 0x0002 0x01 0x1b
 > usbconfig -d X.Y do_request 0x21 0x01 0x0200 0x0502 0x0002 0x00 0x1b
 >
 > --HPS
 >
 
 
 
 -- 
 Sincerely, Dmytro