[pulseaudio-tickets] [Bug 75395] Second sound hardware turned off makes pulseaudio hang

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=75395

--- Comment #14 from Raymond <superquad.vortex2 at gmail.com> ---
http://git.alsa-project.org/?p=alsa-lib.git;a=blob;f=include/control.h;hb=HEAD

TLV_DB_GAIN_MUTE    -9999999

it is strange that the virtual master playback volume has min dB -99999.99 but
dB of slaves (e.g. headphone and speaker only have -95.25dB)

pulseaudio min_dB=-100146 which is even less than  SND_CTL_TLV_DB_GAIN_MUTE     

D: [pulseaudio] alsa-mixer.c: Removing path 'analog-output' as it is a subset
of 'analog-output-speaker'.
D: [pulseaudio] alsa-mixer.c: Available mixer paths (after tidying):
D: [pulseaudio] alsa-mixer.c: Path Set 0x80e19b8, direction=1
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=127, min_dB=-100146,
max_dB=0


MID {
    control.1 {
        iface MIXER
        name 'Headphone Playback Volume'
        value.0 127
        value.1 127
        comment {
            access 'read write'
            type INTEGER
            count 2
            range '0 - 127'
            dbmin -9525
            dbmax 0
            dbvalue.0 0
            dbvalue.1 0
        }
    }


    control.3 {
        iface MIXER
        name 'Speaker Playback Volume'
        value.0 0
        value.1 0
        comment {
            access 'read write'
            type INTEGER
            count 2
            range '0 - 127'
            dbmin -9525
            dbmax 0
            dbvalue.0 -9525
            dbvalue.1 -9525
        }
    }




    control.15 {
        iface MIXER
        name 'Master Playback Volume'
        value 0
        comment {
            access 'read write'
            type INTEGER
            count 1
            range '0 - 127'
            dbmin -9999999
            dbmax 0
            dbvalue.0 -9999999
        }

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