Tempotary fix.
1) Put the notebook to sleep mode. 
2) After wake up sound level is correct.

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https://bugs.launchpad.net/bugs/1597280

Title:
  [SVS1512Z9EB, Realtek ALC275, Black Headphone Out, Left] volume slider
  problem

Status in alsa-driver package in Ubuntu:
  Confirmed

Bug description:
  Very low sound level. Alsamixer and pavucontrol did not help.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: alsa-base 1.0.25+dfsg-0ubuntu5
  ProcVersionSignature: Ubuntu 4.4.0-24.43-generic 4.4.10
  Uname: Linux 4.4.0-24-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  hoofoo     1877 F.... pulseaudio
  CurrentDesktop: GNOME
  Date: Wed Jun 29 13:37:49 2016
  InstallationDate: Installed on 2016-06-18 (10 days ago)
  InstallationMedia: Ubuntu-GNOME 16.04 LTS "Xenial Xerus" - Release amd64 
(20160421)
  PackageArchitecture: all
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=ru_RU.UTF-8
   SHELL=/bin/bash
  SourcePackage: alsa-driver
  Symptom: audio
  Symptom_Card: Built-in Audio - HDA Intel PCH
  Symptom_Jack: Black Headphone Out, Left
  Symptom_Type: Volume slider, or mixer problems
  Title: [SVS1512Z9EB, Realtek ALC275, Black Headphone Out, Left] volume slider 
problem
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 09/18/2012
  dmi.bios.vendor: Insyde Corp.
  dmi.bios.version: R0081C8
  dmi.board.asset.tag: N/A
  dmi.board.name: VAIO
  dmi.board.vendor: Sony Corporation
  dmi.board.version: N/A
  dmi.chassis.asset.tag: N/A
  dmi.chassis.type: 10
  dmi.chassis.vendor: Sony Corporation
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnInsydeCorp.:bvrR0081C8:bd09/18/2012:svnSonyCorporation:pnSVS1512Z9EB:pvrC60B4TX4:rvnSonyCorporation:rnVAIO:rvrN/A:cvnSonyCorporation:ct10:cvrN/A:
  dmi.product.name: SVS1512Z9EB
  dmi.product.version: C60B4TX4
  dmi.sys.vendor: Sony Corporation
  mtime.conffile..etc.modprobe.d.alsa-base.conf: 2016-06-29T12:57:00.907312

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