[pulseaudio-tickets] [Bug 46236] Microsoft LifeChat LX-3000 USB Audio Headset DB issue with Volume Scale

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=46236

--- Comment #7 from Raymond <superquad.vortex2 at gmail.com> ---


(   0.284|   0.000) I: [pulseaudio] source.c:     udev.id =
"usb-045e_Microsoft_LifeChat_LX-3000-00-LX3000"
(   0.284|   0.000) I: [pulseaudio] source.c:     device.bus = "usb"
(   0.284|   0.000) I: [pulseaudio] source.c:     device.vendor.id = "045e"
(   0.284|   0.000) I: [pulseaudio] source.c:     device.vendor.name =
"Microsoft Corp."
(   0.284|   0.000) I: [pulseaudio] source.c:     device.product.id = "070f"
(   0.284|   0.000) I: [pulseaudio] source.c:     device.product.name =
"Microsoft LifeChat LX-3000 "
(   0.284|   0.000) I: [pulseaudio] source.c:     device.serial =
"045e_Microsoft_LifeChat_LX-3000"
(   0.284|   0.000) I: [pulseaudio] source.c:     device.string = "3"
(   0.284|   0.000) I: [pulseaudio] source.c:     module-udev-detect.discovered
= "1"
(   0.284|   0.000) I: [pulseaudio] source.c:     device.icon_name =
"audio-card-usb"
(   0.284|   0.000) I: [pulseaudio] alsa-sink.c: Using 2.0 fragments of size
176400 bytes (1000.00ms), buffer size is 352800 bytes (2000.00ms)
(   0.284|   0.000) I: [pulseaudio] alsa-sink.c: Time scheduling watermark is
20.00ms
(   0.284|   0.000) D: [pulseaudio] alsa-sink.c: hwbuf_unused=0
(   0.284|   0.000) D: [pulseaudio] alsa-sink.c: setting avail_min=87319
(   0.284|   0.000) D: [pulseaudio] alsa-mixer.c: Activating path
analog-output-speaker
(   0.284|   0.000) D: [pulseaudio] alsa-mixer.c: Path analog-output-speaker
(Speakers), direction=1, priority=100, probed=yes, supported=yes, has_mute=yes,
has_volume=yes, has_dB=yes, min_volume=0, max_volume=151, min_dB=-28.37,
max_dB=-0.06


seem pulseaudio present a dB range from -inf to 0dB to the user while the
hardware only support -28.37 to -0.06 

do you mean you cannot hear any sound at dB min -28.37 dB ?

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