[Latitude E7240, Realtek ALC292, Mic, Internal] Internal Mic not visible

[Dan Poler]

Sound Settings panel shows "Headset microphone" and "Dock microphone". Headset when plugged in works fine (the little dialogue pops up etc). Internal microphone is not visible anywhere within the GUI.

alsamixer "sees" the internal microphone and I can adjust its levels but this does not affect the desktop environment.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: alsa-base 1.0.25+dfsg-0ubuntu4
ProcVersionSignature: Ubuntu 3.13.0-30.55-generic 3.13.11.2
Uname: Linux 3.13.0-30-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.2
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: dpoler 2022 F.... pulseaudio
 /dev/snd/controlC0: dpoler 2022 F.... pulseaudio
CurrentDesktop: Unity
Date: Fri Jul 11 17:48:09 2014
InstallationDate: Installed on 2014-07-11 (0 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
PackageArchitecture: all
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaRecordingTest: ALSA recording test through plughw:PCH failed
Symptom_Card: Built-in Audio - HDA Intel PCH
Symptom_Jack: Mic, Internal
Symptom_Type: Only some of inputs are working
Title: [Latitude E7240, Realtek ALC292, Mic, Internal] Recording problem
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 10/05/2013
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A05
dmi.board.name: 0414F8
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA05:bd10/05/2013:svnDellInc.:pnLatitudeE7240:pvr01:rvnDellInc.:rn0414F8:rvrA00:cvnDellInc.:ct9:cvr:
dmi.product.name: Latitude E7240
dmi.product.version: 01
dmi.sys.vendor: Dell Inc.

[Raymond (superquad-vortex2)]

control.19 {
  iface CARD
  name 'Dock Mic Jack'
  value true
  comment {
   access read
   type BOOLEAN
   count 1
  }
 }

dock Mic seem plugged

[Raymond (superquad-vortex2)]

/sys/class/sound/hwC1D0/init_pin_configs:
0x12 0x90a60140
0x13 0x411111f0
0x14 0x90170110
0x15 0x0221401f
0x16 0x01014020
0x18 0x411111f0
0x19 0x01a19030
0x1a 0x411111f0
0x1b 0x411111f0
0x1d 0x40700001
0x1e 0x411111f0

/sys/class/sound/hwC1D0/driver_pin_configs:
0x16 0x21014020
0x19 0x21a19030
0x1a 0x01a1913c

driver seem add pin complex

   4.983518] autoconfig: line_outs=1 (0x16/0x0/0x0/0x0/0x0) type:line
[ 4.983522] speaker_outs=1 (0x14/0x0/0x0/0x0/0x0)
[ 4.983525] hp_outs=1 (0x15/0x0/0x0/0x0/0x0)
[ 4.983527] mono: mono_out=0x0
[ 4.983529] inputs:
[ 4.983532] Dock Mic=0x19
[ 4.983536] Headset Mic=0x1a
[ 4.983539] Internal Mic=0x12

[Dan Poler (l-dan)]

(there's no dock attached to the system - I don't even own one!)

[Dan Poler (l-dan)]

Retested with latest firmware - no change.

[Raymond (superquad-vortex2)]

c: Realtek ALC292
Address: 0
AFG Function Id: 0x1 (unsol 1)
Vendor Id: 0x10ec0292
Subsystem Id: 0x102805ca
Revision Id: 0x100001

https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/sound/pci/hda/patch_realtek.c?id=73bdd597823e2231dc882577dbbaf8df92fe1775

you have to ask the author since this patch add the fixup for your notebook

+ SND_PCI_QUIRK(0x1028, 0x05ca, "Dell", ALC269_FIXUP_DELL2_MIC_NO_PRESENCE),

+ [ALC269_FIXUP_DELL2_MIC_NO_PRESENCE] = {
+ .type = HDA_FIXUP_PINS,
+ .v.pins = (const struct hda_pintbl[]) {
+ { 0x16, 0x21014020 }, /* dock line out */
+ { 0x19, 0x21a19030 }, /* dock mic */
+ { 0x1a, 0x01a1913c }, /* use as headset mic, without its own jack detect */
+ { }
+ },
+ .chained = true,
+ .chain_id = ALC269_FIXUP_HEADSET_MODE_NO_HP_MIC

[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.]