[pulseaudio-tickets] [Bug 94061] New: Volume set below -27 db (35 per centage) makes Creative HS-720 absolutely silent

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=94061

            Bug ID: 94061
           Summary: Volume set below -27 db (35 per centage) makes
                    Creative HS-720 absolutely silent
           Product: PulseAudio
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: alsa
          Assignee: pulseaudio-bugs at lists.freedesktop.org
          Reporter: yanpaso at gmail.com
        QA Contact: pulseaudio-bugs at lists.freedesktop.org
                CC: lennart at poettering.net

Without pulseaudio volume level is detected correctly. (I 've changed default
card in /etc/asound.conf, then ran `speaker-test -c6 -twav` and set volume in
alsamixer to 3 per centages)
With pulseaudio:
1) Headset is loud, even on lowest possible volume level
2) If I set volume below 35 per centages (below -27 db) the output becomes
silent immediately.
3) On some computers, there is possibility to change analog mode to digital
(S/PDIF). With digital mode it becomes calmer: the loudest volume level
produces low volume, it is the same as 35% of analog mode, and the lowest
volume level may be still determined.

Tested with latest versions (ubuntu xenial):
Version 7.1
kernel 4.4

cat /proc/asound/card3/pcm0p/info 
card: 3
device: 0
subdevice: 0
stream: PLAYBACK
id: USB Audio
name: USB Audio
subname: subdevice #0
class: 0
subclass: 0
subdevices_count: 1
subdevices_avail: 1

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