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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:

gstreamer-properties

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

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11 Answers

I had a similar problem - no sound input device driver detected. I used pavucontrol, as explained in this Ask Ubuntu answer and it solved the problem:

  • Install pavucontrol: sudo apt-get install pavucontrol
  • Run:pavucontrol
  • Go to the Input Devices tab
  • Click the lock icon to unlock the channels
  • Under Port, select the correct microphone (front or rear)
3

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

The following 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.

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

4

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

alsamixer

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.

alsa-gain-up

5

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.

1

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

Restart your machine.

*Tried in Ubuntu 16.04 LTS

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: and 

sudo nano /etc/modprobe.d/alsa-base.conf

add this line:

options snd-hda-intel index=0 model=laptop-dmic
1

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.

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!

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.

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
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