[EasyNote_MX45, Analog Devices AD1986A, Other Speaker, Internal] volume slider problem

[pietro]

hello, I'm new with Ubuntu so I'll try
to make you figure out what my problem is, as best as I can.
I'm also sorry for my English is not so good...

PC: Packard Bell EasyNote
CPU: Genuine Intel CPU T2050 @ 1.60 GHz x2
OS: Ubuntu 16.04.1 LTS
Release: 16.04
OS Type: 32-bit
Package: alsa-driver
Audio Hardware: HDA Intel
Processor: Analog devices AD1986A

Description:

On my old laptop the volume slider indicator on the right top of the desktop still always active and starts to flash continuously after I'm logged into the OS. I can verify this also through the AlsaMixer v1.1.0 control panel, once I launched the command 'alsamixer' from terminal.
Master,Headphones,Speakers and PCM faders flash continuously, the db gain move from 0,00 to -46,50.
Audio doesn't work correctly, when I try to watch a video or listen to a song I can only hear little and costant clips.
Is there any solution to my problem?

Peter

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: alsa-base 1.0.25+dfsg-0ubuntu5
ProcVersionSignature: Ubuntu 3.13.0-98.145-generic 3.13.11-ckt39
Uname: Linux 3.13.0-98-generic i686
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: i386
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: peter 1331 F.... pulseaudio
CurrentDesktop: Unity
Date: Fri Nov 18 10:58:00 2016
InstallationDate: Installed on 2016-10-13 (35 days ago)
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release i386 (20120423)
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=it_IT
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=it_IT.UTF-8
 SHELL=/bin/bash
SourcePackage: alsa-driver
Symptom: audio
Symptom_Card: Audio interno - HDA Intel
Symptom_Jack: Other Speaker, Internal
Symptom_Type: Volume slider, or mixer problems
Title: [EasyNote_MX45, Analog Devices AD1986A, Other Speaker, Internal] volume slider problem
UpgradeStatus: Upgraded to xenial on 2016-10-14 (35 days ago)
dmi.bios.date: 10/11/2006
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: T12FvNC.203
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: EasyNote_MX45
dmi.board.vendor: Packard Bell BV
dmi.board.version: 1.0
dmi.chassis.type: 10
dmi.chassis.vendor: Packard Bell BV
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrT12FvNC.203:bd10/11/2006:svnPackardBellBV:pnEasyNote_MX45:pvrPB64H00206:rvnPackardBellBV:rnEasyNote_MX45:rvr1.0:cvnPackardBellBV:ct10:cvr:
dmi.product.name: EasyNote_MX45
dmi.product.version: PB64H00206
dmi.sys.vendor: Packard Bell BV