[Inspiron 5457, Realtek ALC3234, Mic, Internal] No autoswitch

[Mário Valney]

After upgrade Ubuntu stopped work audio switch.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: alsa-base 1.0.25+dfsg-0ubuntu5
ProcVersionSignature: Ubuntu 4.4.0-36.55-generic 4.4.16
Uname: Linux 4.4.0-36-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: valney 2695 F.... pulseaudio
CurrentDesktop: Unity
Date: Wed Sep 14 11:48:59 2016
DistributionChannelDescriptor:
 # This is a distribution channel descriptor
 # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor
 canonical-oem-somerville-trusty-amd64-osp1-20150720-0
InstallationDate: Installed on 2016-09-01 (13 days ago)
InstallationMedia: Ubuntu 14.04 "Trusty" - Build amd64 LIVE Binary 20150720-04:06
PackageArchitecture: all
SourcePackage: alsa-driver
Symptom: audio
Symptom_Card: Áudio interno - HDA Intel PCH
Symptom_Jack: Mic, Internal
Symptom_Type: No auto-switch between inputs
Title: [Inspiron 5457, Realtek ALC3234, Mic, Internal] No autoswitch
UpgradeStatus: Upgraded to xenial on 2016-09-14 (0 days ago)
dmi.bios.date: 04/25/2016
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.1.9
dmi.board.name: 0WT51R
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvr1.1.9:bd04/25/2016:svnDellInc.:pnInspiron5457:pvr:rvnDellInc.:rn0WT51R:rvrA00:cvnDellInc.:ct9:cvr:
dmi.product.name: Inspiron 5457
dmi.sys.vendor: Dell Inc.