Speakers + Microphone Volume Reset

[GitHub issues - opened <github@alsa-project.org>]

alsa-project/alsa-lib issue #144 was opened from rosenbergd:

Every time I start up, connect or disconnect headphones, my volume resets to 74%, I've also noticed the microphone is doing the same thing.

I'm not sure if this is a pulseaudio bug, but here are the logs from `pulseaudio -vv` which seems to show alsa increasing the volume to 74% after initially setting it to 25% which is the correct volume that it should be at:
```
D: [pulseaudio] module-alsa-card.c: Jack 'Headphone Jack' is now plugged in
D: [pulseaudio] device-port.c: Setting port analog-output-headphones to status yes
D: [pulseaudio] module-switch-on-port-available.c: Trying to switch to port analog-output-headphones
I: [pulseaudio] alsa-sink.c: Successfully enabled deferred volume.
I: [pulseaudio] alsa-sink.c: Hardware volume ranges from -179.00 dB to 0.00 dB.
I: [pulseaudio] alsa-sink.c: Fixing base volume to 0.00 dB
I: [pulseaudio] alsa-sink.c: Using hardware volume control. Hardware dB scale supported.
I: [pulseaudio] alsa-sink.c: Using hardware mute control.
D: [alsa-sink-ALC892 Analog] alsa-mixer.c: Activating path analog-output-headphones
D: [alsa-sink-ALC892 Analog] alsa-mixer.c: Path analog-output-headphones (Headphones), direction=1, priority=99, probed=yes, supported=yes, has_mute=yes, has_volume=yes, has_dB=yes, min_volume=0, max_volume=64, min_dB=-179, max_dB=0
D: [alsa-sink-ALC892 Analog] 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
D: [alsa-sink-ALC892 Analog] alsa-mixer.c: Element 'Headphone', direction=1, switch=1, volume=1, volume_limit=-1, enumeration=0, required=0, required_any=4, required_absent=0, mask=0x3600000000f66, n_channels=2, override_map=yes
D: [alsa-sink-ALC892 Analog] alsa-mixer.c: Element 'Speaker', direction=1, switch=2, volume=2, volume_limit=-1, enumeration=0, required=0, required_any=0, required_absent=0, mask=0x6, n_channels=2, override_map=no
D: [alsa-sink-ALC892 Analog] alsa-mixer.c: Element 'Bass Speaker', direction=1, switch=2, volume=2, volume_limit=-1, enumeration=0, required=0, required_any=0, required_absent=0, mask=0x6, n_channels=2, override_map=no
D: [alsa-sink-ALC892 Analog] 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
D: [alsa-sink-ALC892 Analog] alsa-mixer.c: Element 'IEC958', direction=1, switch=2, volume=0, volume_limit=-1, enumeration=0, required=0, required_any=0, required_absent=0, mask=0x0, n_channels=0, override_map=no
D: [alsa-sink-ALC892 Analog] alsa-mixer.c: Jack Dock Headphone, alsa_name='Dock Headphone Jack', index='0', detection unavailable
D: [alsa-sink-ALC892 Analog] alsa-mixer.c: Jack Dock Headphone Phantom, alsa_name='Dock Headphone Phantom Jack', index='0', detection unavailable
D: [alsa-sink-ALC892 Analog] alsa-mixer.c: Jack Front Headphone, alsa_name='Front Headphone Jack', index='0', detection unavailable
D: [alsa-sink-ALC892 Analog] alsa-mixer.c: Jack Front Headphone, alsa_name='Front Headphone Jack', index='1', detection unavailable
D: [alsa-sink-ALC892 Analog] alsa-mixer.c: Jack Front Headphone Front, alsa_name='Front Headphone Front Jack', index='0', detection unavailable
D: [alsa-sink-ALC892 Analog] alsa-mixer.c: Jack Front Headphone Surround, alsa_name='Front Headphone Surround Jack', index='0', detection unavailable
D: [alsa-sink-ALC892 Analog] alsa-mixer.c: Jack Front Headphone Phantom, alsa_name='Front Headphone Phantom Jack', index='0', detection unavailable
D: [alsa-sink-ALC892 Analog] alsa-mixer.c: Jack Headphone, alsa_name='Headphone Jack', index='0', detection possible
D: [alsa-sink-ALC892 Analog] alsa-mixer.c: Jack Headphone Phantom, alsa_name='Headphone Phantom Jack', index='0', detection unavailable
D: [alsa-sink-ALC892 Analog] alsa-mixer.c: Jack Headphone Mic, alsa_name='Headphone Mic Jack', index='0', detection unavailable
D: [alsa-sink-ALC892 Analog] alsa-mixer.c: Jack Headphone - Output, alsa_name='Headphone - Output Jack', index='0', detection unavailable
I: [pulseaudio] sink.c: Changed port of sink 0 "alsa_output.pci-0000_00_1f.3.analog-stereo" to analog-output-headphones
I: [pulseaudio] module-device-restore.c: Restoring volume for sink alsa_output.pci-0000_00_1f.3.analog-stereo.
D: [pulseaudio] sink.c: The reference volume of sink alsa_output.pci-0000_00_1f.3.analog-stereo changed from front-left: 1369 /   2% / -100.80 dB,   front-right: 1369 /   2% / -100.80 dB to front-left: 16380 /  25% / -36.13 dB,   front-right: 16380 /  25% / -36.13 dB.
D: [pulseaudio] core-subscribe.c: Dropped redundant event due to change event.
D: [alsa-sink-ALC892 Analog] alsa-sink.c: Requested volume: front-left: 16380 /  25% / -36.13 dB,   front-right: 16380 /  25% / -36.13 dB
D: [alsa-sink-ALC892 Analog] alsa-sink.c: Got hardware volume: front-left: 16462 /  25% / -36.00 dB,   front-right: 16462 /  25% / -36.00 dB
D: [alsa-sink-ALC892 Analog] alsa-sink.c: Calculated software volume: front-left: 65210 / 100% / -0.13 dB,   front-right: 65210 / 100% / -0.13 dB (accurate-enough=yes)
D: [alsa-sink-ALC892 Analog] sink.c: Volume going up to 16380 at 263091695
D: [alsa-sink-ALC892 Analog] sink.c: Volume change to 16380 at 263091695 was written 5 usec late
I: [pulseaudio] module-device-restore.c: Restoring mute state for sink alsa_output.pci-0000_00_1f.3.analog-stereo.
D: [pulseaudio] sink.c: The mute of sink alsa_output.pci-0000_00_1f.3.analog-stereo changed from yes to no.
D: [pulseaudio] core-subscribe.c: Dropped redundant event due to change event.
D: [pulseaudio] device-port.c: Setting port analog-output-speaker to status no
D: [pulseaudio] core-subscribe.c: Dropped redundant event due to change event.
D: [pulseaudio] card.c: Setting card alsa_card.pci-0000_00_1f.3 profile output:analog-surround-21 to availability status no
D: [pulseaudio] core-subscribe.c: Dropped redundant event due to change event.
D: [pulseaudio] card.c: Setting card alsa_card.pci-0000_00_1f.3 profile output:analog-surround-21+input:analog-stereo to availability status no
D: [pulseaudio] core-subscribe.c: Dropped redundant event due to change event.
D: [pulseaudio] card.c: Setting card alsa_card.pci-0000_00_1f.3 profile output:analog-surround-40 to availability status no
D: [pulseaudio] core-subscribe.c: Dropped redundant event due to change event.
D: [pulseaudio] card.c: Setting card alsa_card.pci-0000_00_1f.3 profile output:analog-surround-40+input:analog-stereo to availability status no
D: [pulseaudio] core-subscribe.c: Dropped redundant event due to change event.
D: [alsa-sink-ALC892 Analog] alsa-sink.c: Read hardware volume: front-left: 5578 /   9% / -64.20 dB,   front-right: 5578 /   9% / -64.20 dB
D: [pulseaudio] sink.c: The reference volume of sink alsa_output.pci-0000_00_1f.3.analog-stereo changed from front-left: 16380 /  25% / -36.13 dB,   front-right: 16380 /  25% / -36.13 dB to front-left: 5578 /   9% / -64.20 dB,   front-right: 5578 /   9% / -64.20 dB.
D: [pulseaudio] sink.c: The mute of sink alsa_output.pci-0000_00_1f.3.analog-stereo changed from no to yes.
D: [pulseaudio] core-subscribe.c: Dropped redundant event due to change event.
D: [alsa-sink-ALC892 Analog] alsa-sink.c: Read hardware volume: front-left: 49714 /  76% / -7.20 dB,   front-right: 49714 /  76% / -7.20 dB
D: [pulseaudio] sink.c: The reference volume of sink alsa_output.pci-0000_00_1f.3.analog-stereo changed from front-left: 5578 /   9% / -64.20 dB,   front-right: 5578 /   9% / -64.20 dB to front-left: 49714 /  76% / -7.20 dB,   front-right: 49714 /  76% / -7.20 dB.
D: [pulseaudio] core-subscribe.c: Dropped redundant event due to change event.
D: [pulseaudio] sink.c: The mute of sink alsa_output.pci-0000_00_1f.3.analog-stereo changed from yes to no.
D: [pulseaudio] core-subscribe.c: Dropped redundant event due to change event.
D: [alsa-sink-ALC892 Analog] alsa-sink.c: Read hardware volume: front-left: 48583 /  74% / -7.80 dB,   front-right: 48583 /  74% / -7.80 dB
D: [pulseaudio] sink.c: The reference volume of sink alsa_output.pci-0000_00_1f.3.analog-stereo changed from front-left: 49714 /  76% / -7.20 dB,   front-right: 49714 /  76% / -7.20 dB to front-left: 48583 /  74% / -7.80 dB,   front-right: 48583 /  74% / -7.80 dB.
D: [pulseaudio] core-subscribe.c: Dropped redundant event due to change event.
D: [alsa-sink-ALC892 Analog] alsa-sink.c: Read hardware volume: front-left: 48583 /  74% / -7.80 dB,   front-right: 48583 /  74% / -7.80 dB
D: [alsa-sink-ALC892 Analog] alsa-sink.c: Read hardware volume: front-left: 48583 /  74% / -7.80 dB,   front-right: 48583 /  74% / -7.80 dB
D: [alsa-sink-ALC892 Analog] alsa-sink.c: Read hardware volume: front-left: 48583 /  74% / -7.80 dB,   front-right: 48583 /  74% / -7.80 dB
D: [alsa-sink-ALC892 Analog] alsa-sink.c: Read hardware volume: front-left: 48583 /  74% / -7.80 dB,   front-right: 48583 /  74% / -7.80 dB
D: [alsa-sink-ALC892 Analog] alsa-sink.c: Read hardware volume: front-left: 48583 /  74% / -7.80 dB,   front-right: 48583 /  74% / -7.80 dB
D: [alsa-sink-ALC892 Analog] alsa-sink.c: Read hardware volume: front-left: 48583 /  74% / -7.80 dB,   front-right: 48583 /  74% / -7.80 dB
D: [alsa-sink-ALC892 Analog] alsa-sink.c: Read hardware volume: front-left: 48583 /  74% / -7.80 dB,   front-right: 48583 /  74% / -7.80 dB
I: [pulseaudio] module-device-restore.c: Storing volume/mute for device+port sink:alsa_output.pci-0000_00_1f.3.analog-stereo:analog-output-headphones.
I: [pulseaudio] module-device-restore.c: Synced.
```

Issue URL     : https://github.com/alsa-project/alsa-lib/issues/144
Repository URL: https://github.com/alsa-project/alsa-lib