I have recently updated my laptop OS from Ubuntu 12.04 to 14.04

After updating the OS, my laptop's input device ie., microphone is not working.

Earlier it was working with Ubuntu 12.04.

Also there is no sound input device driver detected

Sound setting

I am using Dell Vostro 1014.

after running command $ gstreamer-properties, output is:


I think my microphone is working but is not being betected by ubuntu as in above screenshot.

But after running Pulse Audio Sound Control, it shows input sound progress, it means input device is working but not being detected. Even by Sound Recorder. Pulse Audio Sound Control

After running alsamixer the output is: alsamixer

  • Updated my question with the output asked for – Anuj TBE Aug 7 '14 at 17:20
  • gstreamer plugins are already installed, as click the link opens software-center and asks to remove instead of install – Anuj TBE Aug 7 '14 at 17:33
  • I think there is some setting to select sound input device/profile. But, I don't know where it is. – Anuj TBE Aug 9 '14 at 7:00
  • 1
    What outputs do you have available? Have you checked if your onboard sound card was disabled at the BIOS? – Waldir Leoncio Apr 5 '15 at 11:42
  • 2
    I have windows 7 parallel to ubuntu. and sound input is working good in windows. If it was disabled in BIOS it must not work with windows as well. This issue is only with Ubuntu – Anuj TBE Apr 5 '15 at 13:18

11 Answers 11


I had a similar problem - no sound input device driver detected. I used pavucontrol, as explained here and it solved the problem:

  • Install pavucontrol: sudo apt-get install pavucontrol
  • Run: sudo pavucontrol
  • Go to the "Input Devices" tab
  • Click the lock icon to unlock the channels
  • Under "Port", select the correct microphone (front or rear)
| improve this answer | |
  • 7
    I don't think sudo is required when running pavucontrol, is it? – anderstood Aug 12 '16 at 1:56
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    In this particular case using sudo did solve the problem for me: I had to go to the Configuration tab to re-enable the "output + input" mode of my device, and said option wasn't available without sudo. – Enrico Nov 16 '16 at 14:32
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    I won't able to run sudo pavucontrol. It stops on "Establishing connection to PulseAudio. Please wait...". Without sudo all works smoothly. – spirit Mar 10 '17 at 10:04
  • This fixed the problem for me in Pop OS 18.10 – Matt West Apr 9 '19 at 2:23
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    The problem was almost fixed after installing pavucontrol (all devices went mute). One step was left for me and I struggled a lot trying to figure out why I was getting false positives: Re-plug your I/O sound devices to get them working again. – George Dimitriadis Nov 16 '19 at 9:28

try this in terminal for no sound:

sudo alsa force-reload

restart device and check if sound is workin?

if it doesnt do this:

sudo apt-get remove --purge alsa-base pulseaudio

sudo apt-get install alsa-base pulseaudio

Restart device and check ..This should probably do the job!

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  • I tried this, but still nothing happend.... – Anuj TBE Aug 9 '14 at 5:29
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    These commands will also remove some important dependencies that may break Ubuntu. Type in the command sudo apt-get install ubuntu-desktop to reinstall the removed files. – authentictech Mar 29 '16 at 22:09
  • Warning!!!!! what @authentictech said is correct, remember that. – Mohd Abdul Mujib Jun 16 '16 at 14:38
  • 'force-reload' worked for me, thanks – Mitul Shah Apr 21 '17 at 8:43

Open a terminal and issue the command alsamixer you will get a screen like this:


use the right arrow to highlight the Front Microphone

if it's muted as shown above, hit the 'M' key to toggle Mute off.

then use the up arrow to increase the gain (sensitivity) your end result should look similar to this. Hit the Esc key to exit. Your Microphone should now work as advertised.


| improve this answer | |
  • 1
    Can you please elaborate on how to use alsamixer and how to open it for those who don't know. A screenshot would improve your answer as well!! – v2r Aug 21 '14 at 15:36
  • @NoTime Answers like this are not more appropriate as comments. – Eliah Kagan Aug 21 '14 at 16:20
  • @EliahKagan you are right I should have just put I am unsure if this would solve any issue, already downvoted and flagged as low quality. – No Time Aug 21 '14 at 16:24
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    In my case, after running alsamixer, there are only three columns of Master,PCM and Beep. There is no column for microphone. – Anuj TBE Aug 22 '14 at 16:38
  • it worked! but You can barely hear the sound! – Salim Ibrogimov May 3 '18 at 17:07

Had the same problem. Solved it like this:

  • Run pavucontrol from the terminal window.
  • Check microphone level and mute switch in tab Input Devices.
  • Open tab Recording.
  • In parallel, start the recording function in the wanted application. E.g. press record in Audacity or start a test call in Skype.
  • In the Recording tab of pavucontrol, now a source selection becomes available. Select the right one. Worked for me.

To me it is (was) confusing that the source selector is not always present in pavucontrol.

| improve this answer | |
  • @JuanAntonio, Could you please review my edits and also review the editing help to improve the readability of your own edits in the future... ;-) – Fabby Jan 17 '17 at 21:39

Goto PulseAudio volume control --> Configuration, choose "Analog Stereo Duplex" under the Profile section.

Restart your machine.

*Tried in Ubuntu 16.04 LTS

| improve this answer | |

The following might work for you:

  1. Run gksudo gedit /etc/modprobe.d/alsa-base.conf on terminal (if you have no access to a graphical interface in the moment, use sudo nano instead of gksudo gedit.
  2. Add options snd-hda-intel position_fix=1 or position_fix=2 to the end of the file.
  3. Reboot

Sources: http://ubuntuforums.org/showthread.php?t=1893142 and https://wiki.ubuntu.com/Audio/PositionReporting

| improve this answer | |
sudo nano /etc/modprobe.d/alsa-base.conf

add this line:

options snd-hda-intel index=0 model=laptop-dmic
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I had the same problem. I found the solution after I upgraded to 16.04, but I think it works on 14.04 too! In Skype click "Open PulseAudio Volume Control". From there on move to "Input Devices" and change the Port. By some miracle my microphone started working after I changed my port to "Microphone (unplugged)". Good luck!

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For me everything looked correct, input device was selected correctly however I was unable to use the inner or the external mic. I solved it by enabling the webcam using the Fn keys. Apparently they are enabled and disabled by the same Fn key.

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If you don't see your Microphone in the Port selection under the input devices in pavucontrol: use pavucontrol -> configuration -> built_in Audio. Check if you have * Output + * Input choosen in your profile, otherwise your microphone isn't shown in the input devices section and cannot be used.

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I had a similar problem on 14.04, sound input source was blank in the 'Sound Settings'. I did the following, what did the trick is installing 'Audacity', for more info check the following link

sudo apt-get remove --purge alsa-base pulseaudio
sudo apt-get install alsa-base pulseaudio
sudo apt-get install audacity
| improve this answer | |
  • 8
    Doind this somehow completely screwed with my system. Now I don't even have sound settings or a sound icon on the panel. Fixed it after reading askubuntu.com/q/453440/48105 and reinstalling ubuntu-desktop. – Waldir Leoncio Apr 5 '15 at 11:35

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