[pulseaudio-tickets] [Bug 86676] Audio skips and repeats when increasing volume in applications

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=86676

--- Comment #3 from Raymond <superquad.vortex2 at gmail.com> ---
(   0.113|   0.000) D: [pulseaudio] alsa-mixer.c: Path analog-output (Analog
Output), direction=1, priority=99, probed=yes, supported=yes, has_mute=yes,
has_volume=yes, has_dB=yes, min_volume=0, max_volume=87, min_dB=-116.25,
max_dB=0
(   0.113|   0.000) D: [pulseaudio] alsa-mixer.c: Element Master, direction=1,
switch=1, volume=1, volume_limit=-1, enumeration=0, required=0, required_any=0,
required_absent=0, mask=0x7ffffffffffff, n_channels=1, override_map=yes
(   0.113|   0.000) D: [pulseaudio] alsa-mixer.c: Element Headphone,
direction=1, switch=1, volume=3, volume_limit=-1, enumeration=0, required=0,
required_any=0, required_absent=0, mask=0x6, n_channels=2, override_map=no
(   0.113|   0.000) D: [pulseaudio] alsa-mixer.c: Element Speaker, direction=1,
switch=1, volume=2, volume_limit=-1, enumeration=0, required=0, required_any=0,
required_absent=0, mask=0x6, n_channels=2, override_map=no
(   0.113|   0.000) D: [pulseaudio] alsa-mixer.c: Element PCM, direction=1,
switch=0, volume=1, volume_limit=-1, enumeration=0, required=0, required_any=0,
required_absent=0, mask=0x3600000000f66, n_channels=2, override_map=yes
(   0.113|   0.000) D: [pulseaudio] alsa-mixer.c: Jack Line Out,
alsa_name='Line Out Jack', detection unavailable
(   0.113|   0.000) D: [pulseaudio] alsa-mixer.c: Jack Line Out Phantom,
alsa_name='Line Out Phantom Jack', detection unavailable
(   0.113|   0.000) I: [pulseaudio] alsa-sink.c: Successfully enabled deferred
volume.
(   0.114|   0.000) I: [pulseaudio] alsa-sink.c: Hardware volume ranges from
-116.25 dB to 0.00 dB.
(   0.114|   0.000) I: [pulseaudio] alsa-sink.c: Fixing base volume to 0.00 dB
(   0.114|   0.000) I: [pulseaudio] alsa-sink.c: Using hardware volume control.
Hardware dB scale supported.
(   0.114|   0.000) I: [pulseaudio] alsa-sink.c: Using hardware mute control.
(   0.114|   0.000) D: [pulseaudio] alsa-util.c: snd_pcm_dump():
(   0.114|   0.000) D: [pulseaudio] alsa-util.c: Soft volume PCM
(   0.114|   0.000) D: [pulseaudio] alsa-util.c: Control: PCM Playback Volume
(   0.114|   0.000) D: [pulseaudio] alsa-util.c: min_dB: -51
(   0.114|   0.000) D: [pulseaudio] alsa-util.c: max_dB: 0
(   0.114|   0.000) D: [pulseaudio] alsa-util.c: resolution: 256

softvol plugin is -51dB to 0 dB,  

as hp and speaker are different path and you cannot add dB range of hp and
speaker

a) the vitrual master playback volume and hp playback volume
b) the virtual master playback volume and speaker volume

the dB range of these two paths are -116.25 +51 = -55.25 dB to 0dB


what are the stepsize of the hp and speaker playback volume controls? the
stepsize of hda codecs are multiple of 0.25dB


seem always use software volume as the hardware volume alone cannot set to
-5.81 dB




   6.182|   0.000) D: [alsa-sink-ALC269VB Analog] alsa-sink.c: Requested
volume: front-left: 52428 /  80% / -5.81 dB,   front-right: 52428 /  80% /
-5.81 dB
(   6.183|   0.000) D: [alsa-sink-ALC269VB Analog] alsa-sink.c: Got hardware
volume: front-left: 52761 /  81% / -5.65 dB,   front-right: 52761 /  81% /
-5.65 dB
(   6.183|   0.000) D: [alsa-sink-ALC269VB Analog] alsa-sink.c: Calculated
software volume: front-left: 65122 /  99% / -0.17 dB,   front-right: 65122 / 
99% / -0.17 dB (accurate-enough=yes)
(   6.183|   0.000) D: [alsa-sink-ALC269VB Analog] sink.c: Volume going down to
52428 at 4188579532

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