[UX301LAA, Realtek ALC282, Black Headphone Out, Left] Microphone in headset not detected

[Claes]

I asked my question on askubuntu.com, and it was suggested that my problem was a bug, so reporting here.

According to the specs (http://www.asus.com/us/Notebooks_Ultrabooks/ASUS_ZENBOOK_UX301LA/specifications/), my laptop has a Microphone-in/Headphone-out jack.

I also have two different headsets, both of which works just fine as a headset when used with my phone.

However, Ubuntu doesn't appear to recognize the headset as having a microphone.

Under Sound and the Output tab, the only item listed changes from "Speakers Built-in Audio" to "Headphones Built-in Audio" when connected.

The input tab shows no reaction at all to the headset being connected. It lists "Microphone Build-in Audio" and "Analog input Built-in Audio." Both the input options clearly take audio from the computers built in microphone, rather the headsets. Tapping the laptop gives large spikes on the Input level indicator, while tapping the microphone on the headset gives little to no response.

What can I do to get the headset recognized?

$ lspci -k | grep -A2 Audio
00:03.0 Audio device: Intel Corporation Haswell-ULT HD Audio Controller (rev 09)
    Subsystem: Intel Corporation Device 2010
    Kernel driver in use: snd_hda_intel
--
00:1b.0 Audio device: Intel Corporation Lynx Point-LP HD Audio Controller (rev 04)
    Subsystem: ASUSTeK Computer Inc. Device 13bd
    Kernel driver in use: snd_hda_intel

$ lsb_release -rd
Description: Ubuntu 14.04.1 LTS
Release: 14.04

$ apt-cache policy alsa-base
alsa-base:
  Installed: 1.0.25+dfsg-0ubuntu4
  Candidate: 1.0.25+dfsg-0ubuntu4
  Version table:
 *** 1.0.25+dfsg-0ubuntu4 0
        500 http://se.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages
        100 /var/lib/dpkg/status

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: alsa-base 1.0.25+dfsg-0ubuntu4
ProcVersionSignature: Ubuntu 3.13.0-36.63-generic 3.13.11.6
Uname: Linux 3.13.0-36-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.4
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: letharion 2923 F.... pulseaudio
 /dev/snd/pcmC1D0c: letharion 2923 F...m pulseaudio
 /dev/snd/pcmC1D0p: letharion 2923 F...m pulseaudio
 /dev/snd/controlC0: letharion 2923 F.... pulseaudio
CurrentDesktop: Unity
Date: Thu Sep 25 10:22:36 2014
PackageArchitecture: all
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:PCH successful
Symptom_Card: Built-in Audio - HDA Intel PCH
Symptom_Jack: Black Headphone Out, Left
Symptom_PulsePlaybackTest: PulseAudio playback test successful
Symptom_Type: Only some of outputs are working
Title: [UX301LAA, Realtek ALC282, Black Headphone Out, Left] Playback problem
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/31/2013
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: UX301LAA.206
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: UX301LAA
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: 1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK COMPUTER INC.
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrUX301LAA.206:bd12/31/2013:svnASUSTeKCOMPUTERINC.:pnUX301LAA:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnUX301LAA:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
dmi.product.name: UX301LAA
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC.
mtime.conffile..etc.modprobe.d.alsa.base.conf: 2014-09-24T22:41:16.052566

[Claes (letharion)]

The change done to alsa-base.conf was a suggestion from askubuntu.com. The mic input worked neither before nor after the change, which was:

echo options snd-hda-intel model=laptop-dmic | sudo tee -a /etc/modprobe.d/alsa-base.conf
sudo alsa force-reload

[Claes (letharion)]

Problem persists on 14.10.

[Marcus Tomlinson (marcustomlinson)]

This release of Ubuntu is no longer receiving maintenance updates. If this is still an issue on a maintained version of Ubuntu please let us know.

[Launchpad Janitor (janitor)]

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

[lemrm (lemrm)]

Problem persists on 20.04.