Date: Sun, 17 Jul 2011 10:40:11 GMT From: Dmytro Pryanyshnikov <lynx.ripe@gmail.com> To: freebsd-multimedia@FreeBSD.org Subject: Re: kern/158979: [snd_uadio] snd_uaudio fails to initialize built-in microphone in Logitech Webcam C160 Message-ID: <201107171040.p6HAeB7F030179@freefall.freebsd.org>
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The following reply was made to PR kern/158979; it has been noted by GNATS. From: Dmytro Pryanyshnikov <lynx.ripe@gmail.com> To: Hans Petter Selasky <hselasky@c2i.net> Cc: bug-followup@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 13:33:24 +0300 On Sun, Jul 17, 2011 at 12:48 PM, Hans Petter Selasky <hselasky@c2i.net> wrote: > > HI, > > If you are running this in a VM, then try using usbdump to figure out which > control endpoint requests are issued for this device. > > Probably you can make a similar usbconfig do_request line to change the > microphone volume back to normal! Yes, I've recorded packet interchange on the USB bus during the (device) <-> (Linux kernel in the VirtualBox) data exchange with the command: usbdump -i usbus4 -s 0 -w 20110717_1320.dmp and placed the resulting file at https://sites.google.com/site/lynxripe/freebsd/pr/158979/20110717_1320.dmp Alas, I haven't got sufficient USB protocol knowlege in order to comprehend this data ;( > > --HPS > -- Sincerely, Dmytro
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