[pulseaudio-tickets] [Bug 88265] Incorrect volume in sound indicator

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=88265

--- Comment #8 from Raymond <superquad.vortex2 at gmail.com> ---
your usb audio only support 6 channel and has pcm playback volume control with
very small dB range from -3.12 dB to 0dB

the work around is ignore dB range by specify

 ignore_dB=1

http://www.freedesktop.org/wiki/Software/PulseAudio/Documentation/User/Modules/#index53h3


USB Mixer: usb_id=0x05a71020, ctrlif=0, ctlerr=0
Card: Bose Corporation Bose USB Audio at usb-0000:00:14.0-1, full speed
  Unit: 3
    Control: name="PCM Playback Volume", index=0
    Info: id=3, control=2, cmask=0x0, channels=1, type="S16"
    Volume: min=-801, max=-1, dBmin=-312, dBmax=0
  Unit: 3
    Control: name="PCM Playback Switch", index=0
    Info: id=3, control=1, cmask=0x0, channels=1, type="INV_BOOLEAN"
    Volume: min=0, max=1, dBmin=0, dBmax=0


post output of your usb audio device



lsusb -vvvv

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