[Dell Latitude E5450, Realtek ALC293] Microphone is being detected as headphone

[kaxing]

External microphone is not working when plugged into the headset(combo) jack, even plugging headset(four rings) into the jack the headset micrphone will not working.
However built-in (next to webcam) micrphone works perfectly, with above situation.

Step to reproduce:

1. plug the headset or microphone connector into the headset jack on the side of laptop

Expected result:

Recording voice with plugged/exertnal microphone

Actual result:

Recording only went throug the buil-in microphone.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: alsa-base 1.0.25+dfsg-0ubuntu4
ProcVersionSignature: Ubuntu 3.13.0-43.72-generic 3.13.11.11
Uname: Linux 3.13.0-43-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.6
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: ubuntu 1385 F.... pulseaudio
 /dev/snd/controlC1: ubuntu 1385 F.... pulseaudio
CurrentDesktop: Unity
Date: Mon Jan 12 05:38:33 2015
InstallationDate: Installed on 2015-01-12 (0 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
PackageArchitecture: all
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaRecordingTest: ALSA recording test through plughw:PCH successful
Symptom_Card: Built-in Audio - HDA Intel PCH
Symptom_Jack: Mic, Internal
Symptom_PulseAudioRecordingTest: PulseAudio recording test through plughw:PCH successful
Symptom_Type: None of the above
Title: [Latitude E5450, Realtek ALC293, Mic, Internal] Recording problem
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/06/2014
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A00
dmi.board.name: 013BI5
dmi.board.vendor: Dell Inc.
dmi.board.version: X03
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA00:bd08/06/2014:svnDellInc.:pnLatitudeE5450:pvr01:rvnDellInc.:rn013BI5:rvrX03:cvnDellInc.:ct9:cvr:
dmi.product.name: Latitude E5450
dmi.product.version: 01
dmi.sys.vendor: Dell Inc.

[Anthony Wong (anthonywong)]

This should have been fixed in bug 1297581. Hui, could you take a look?

[Hui Wang (hui.wang)]

This problem was fixed and was in the upstream already. This fix used Codec pin quirk framework,but this framework was not in the linux-3.13, so this fix was not backported to Trusty kernel.

If users install the latest alsa daily dkms, this problem will disappear.

[kaxing (kaxing)]

Hi @Hui ,

Got two questions here:

Can I get the latest alsa package you mentioned about, I would like to check this in advance.

And does this planning to be backported for kernel-3.13?

[Hui Wang (hui.wang)]

@kaxing,

you can get the latest alsa dkms at https://launchpad.net/~ubuntu-audio-dev/+archive/ubuntu/alsa-daily/+packages

so far, there is no plan to backport to kernel-3.13.