[ThinkPad X1 Yoga 4th Gen][20QGZ4MTUS, Realtek ALC285, Speaker, Internal] The Volume remains the same value.

[Gabriel Zhi Chen]

[Steps to reproduce]
1. Install Ubuntu 19.10 on ThinkPad X1 Yoga 4th Gen
2. Login system
3. Navigate to 'System Settings' -> 'Sound'
4. Adjust the 'System Volume' bar and verify the sound result
5. Press 'F2 and F3' to adjust system volume

[Expected result]
System volume should be heard with several sound level.

[Actual result]
No matter what adjusted, the volume remains the same value.

[Notes]
Navigate to 'System Settings' -> 'Sound' -> 'Over-Amplification', turn it 'On'
Then adjust the sound, we could hear the different volume value beyond 100%, but it could remains the same value from 0 ~ 100%

ProblemType: Bug
DistroRelease: Ubuntu 19.10
Package: alsa-base 1.0.25+dfsg-0ubuntu5
ProcVersionSignature: Ubuntu 5.3.0-13.14-generic 5.3.0
Uname: Linux 5.3.0-13-generic x86_64
ApportVersion: 2.20.11-0ubuntu7
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: u 1747 F.... pulseaudio
 /dev/snd/pcmC0D0p: u 1747 F...m pulseaudio
CurrentDesktop: ubuntu:GNOME
Date: Fri Oct 11 12:01:52 2019
InstallationDate: Installed on 2019-10-09 (1 days ago)
InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Beta amd64 (20190926)
PackageArchitecture: all
SourcePackage: alsa-driver
Symptom: audio
Symptom_Card: Built-in Audio - HDA Intel PCH
Symptom_Jack: Speaker, Internal
Symptom_PulseAudioLog:
 10月 11 10:57:40 u-ThinkPad-X1-Yoga-4th dbus-daemon[745]: [system] Activating via systemd: service name='org.freedesktop.RealtimeKit1' unit='rtkit-daemon.service' requested by ':1.36' (uid=124 pid=952 comm="/usr/bin/pulseaudio --daemonize=no " label="unconfined")
 10月 11 10:57:57 u-ThinkPad-X1-Yoga-4th systemd[938]: pulseaudio.service: Succeeded.
 10月 11 10:57:59 u-ThinkPad-X1-Yoga-4th dbus-daemon[745]: [system] Rejected send message, 2 matched rules; type="method_call", sender=":1.785" (uid=124 pid=2441 comm="/usr/bin/pulseaudio --daemonize=no " label="unconfined") interface="org.freedesktop.DBus.ObjectManager" member="GetManagedObjects" error name="(unset)" requested_reply="0" destination="org.bluez" (uid=0 pid=734 comm="/usr/lib/bluetooth/bluetoothd " label="unconfined")
 10月 11 10:58:07 u-ThinkPad-X1-Yoga-4th systemd[938]: pulseaudio.service: Succeeded.
 10月 11 10:58:07 u-ThinkPad-X1-Yoga-4th systemd[938]: pulseaudio.socket: Succeeded.
Symptom_Type: Volume slider, or mixer problems
Title: [20QGZ4MTUS, Realtek ALC285, Speaker, Internal] volume slider problem
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 10/04/2019
dmi.bios.vendor: LENOVO
dmi.bios.version: N2HET39W (1.22 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20QGZ4MTUS
dmi.board.vendor: LENOVO
dmi.board.version: SDK0J40697 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 31
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.modalias: dmi:bvnLENOVO:bvrN2HET39W(1.22):bd10/04/2019:svnLENOVO:pn20QGZ4MTUS:pvrThinkPadX1Yoga4th:rvnLENOVO:rn20QGZ4MTUS:rvrSDK0J40697WIN:cvnLENOVO:ct31:cvrNone:
dmi.product.family: ThinkPad X1 Yoga 4th
dmi.product.name: 20QGZ4MTUS
dmi.product.sku: LENOVO_MT_20QG_BU_Think_FM_ThinkPad X1 Yoga 4th
dmi.product.version: ThinkPad X1 Yoga 4th
dmi.sys.vendor: LENOVO

[Gabriel Zhi Chen (gabrielzchen)]

The issue reproduces on Eoan final release version.