I think the dBmin and dBmax values provided in the mixer description are
incorrect, both are 0.
$ cat /proc/asound/CameraB409241/usbmixer
USB Mixer: usb_id=0x14152000, ctrlif=1, ctlerr=0
Card: OmniVision Technologies, Inc. USB Camera-B4.09.24.1 at
usb-0000:00:1a.7-5.2, hi
Unit: 3
Control: name="Mic Capture Volume", index=0
Info: id=3, control=2, cmask=0xf, channels=4, type="S16"
Volume: min=0, max=1, dBmin=0, dBmax=0
Also note 'Mic Gain' control in my previous post is the result of my .asoundrc
configuration, not an actual Playstation Eye control.
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https://bugs.launchpad.net/bugs/886449
Title:
[USB-Audio - USB Camera-B4.04.27.1, recording] Pulseaudio fails to
detect card
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