Comment 0 for bug 1316518

Internal Mic of Samsung Ativ book 9 (NP900X3G) is recording silence and occasional clicks.

When selecting different levels for L and R channel of internal mic in pulse audio mixer or alsamixer, sometimes audio is recorded but very bad quality.

alsa-info.sh output: http://www.alsa-project.org/db/?f=064f0b536a1b068efd30d58c2641b5ec2348f059

Ubuntu Gnome 14.04

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: alsa-base 1.0.25+dfsg-0ubuntu4
ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
Uname: Linux 3.13.0-24-generic x86_64
ApportVersion: 2.14.1-0ubuntu3
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: sarah 2014 F.... pulseaudio
                      sarah 8509 F.... alsamixer
 /dev/snd/controlC0: sarah 2014 F.... pulseaudio
CurrentDesktop: GNOME
Date: Tue May 6 11:55:36 2014
InstallationDate: Installed on 2014-04-29 (6 days ago)
InstallationMedia: Ubuntu-GNOME 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.2)
PackageArchitecture: all
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaRecordingTest: ALSA recording test through plughw:PCH failed
Symptom_Card: Internes Audio - HDA Intel PCH
Symptom_Jack: Mic, Internal
Symptom_Type: None of the above
Title: [900X3G, Realtek ALC282, Mic, Internal] Recording problem
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/14/2014
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: P04ADU.023.140414.PS
dmi.board.asset.tag: No Asset Tag
dmi.board.name: NP900X3G-K02DE
dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.board.version: SAMSUNG_SW_REVISION_1234567890ABCD
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 9
dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP04ADU.023.140414.PS:bd04/14/2014:svnSAMSUNGELECTRONICSCO.,LTD.:pn900X3G:pvrP04ADU:rvnSAMSUNGELECTRONICSCO.,LTD.:rnNP900X3G-K02DE:rvrSAMSUNG_SW_REVISION_1234567890ABCD:cvnSAMSUNGELECTRONICSCO.,LTD.:ct9:cvrN/A:
dmi.product.name: 900X3G
dmi.product.version: P04ADU
dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD.