[80E3, Conexant CX20751/2, Mic, Internal] No sound at all

[Rahul]

When Skype or viber starts, the internal mic stops to work and Pavucontrol input seection shows no response to any sound...

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: alsa-base 1.0.25+dfsg-0ubuntu4
ProcVersionSignature: Ubuntu 3.16.0-50.66~14.04.1-generic 3.16.7-ckt16
Uname: Linux 3.16.0-50-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.15
Architecture: amd64
CurrentDesktop: LXDE
Date: Wed Oct 7 17:22:13 2015
InstallationDate: Installed on 2015-05-16 (144 days ago)
InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
PackageArchitecture: all
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaRecordingTest: ALSA recording test through plughw:Generic successful
Symptom_Card: Built-in Audio - HD-Audio Generic
Symptom_Jack: Mic, Internal
Symptom_PulseAudioRecordingTest: PulseAudio recording test through plughw:Generic successful
Symptom_Type: No sound at all
Title: [80E3, Conexant CX20751/2, Mic, Internal] No sound at all
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/12/2014
dmi.bios.vendor: LENOVO
dmi.bios.version: A2CN27WW(V1.09)
dmi.board.asset.tag: No Asset Tag
dmi.board.name: Lancer 5B2
dmi.board.vendor: LENOVO
dmi.board.version: SDK0F82993 WIN
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Lenovo G50-45
dmi.modalias: dmi:bvnLENOVO:bvrA2CN27WW(V1.09):bd12/12/2014:svnLENOVO:pn80E3:pvrLenovoG50-45:rvnLENOVO:rnLancer5B2:rvrSDK0F82993WIN:cvnLENOVO:ct10:cvrLenovoG50-45:
dmi.product.name: 80E3
dmi.product.version: Lenovo G50-45
dmi.sys.vendor: LENOVO

[Raymond (superquad-vortex2)]

APLAY

**** List of PLAYBACK Hardware Devices ****
card 0: HDMI [HDA ATI HDMI], device 3: HDMI 0 [HDMI 0]
  Subdevices: 0/1
  Subdevice #0: subdevice #0
card 1: Generic [HD-Audio Generic], device 0: CX20751/2 Analog [CX20751/2 Analog]
  Subdevices: 0/1
  Subdevice #0: subdevice #0

ARECORD

**** List of CAPTURE Hardware Devices ****
card 1: Generic [HD-Audio Generic], device 0: CX20751/2 Analog [CX20751/2 Analog]
  Subdevices: 0/1
  Subdevice #0: subdevice #0

it is strange that your HDMI and analog playback are using by pulseaudio at same time

but

Default sink name: alsa_output.pci-0000_00_14.2.analog-stereo
Default source name: alsa_input.pci-0000_00_14.2.analog-stereo

USER PID ACCESS COMMAND
/dev/snd/pcmC1D0c: rahul 2036 F...m pulseaudio
/dev/snd/pcmC1D0p: rahul 2036 F...m pulseaudio
/dev/snd/controlC1: rahul 2036 F.... pulseaudio
/dev/snd/pcmC0D3p: rahul 2036 F...m pulseaudio
/dev/snd/controlC0: rahul 2036 F.... pulseaudio

[Raymond (superquad-vortex2)]

https://wiki.ubuntu.com/PulseAudio/Log

[Launchpad Janitor (janitor)]

[Expired for alsa-driver (Ubuntu) because there has been no activity for 60 days.]

[harpreet bhatia (bluepicaso)]

any solution?