[SOLVED] Sound recording doesn't work on HP ProBook 4710s,soundcard:Intel 82801I

[valera]

I have the following integrated sound card installed on HP ProBook 4710s:

$ lspcidrake -v | fgrep -i AUDIO
snd_hda_intel   : Intel Corporation|82801I (ICH9 Family) HD Audio Controller (vendor:8086 device:293e subv:103c subd:3076) (rev: 03)

Got no issues with audio playback, but sound recording is not working for some reason (tried SoX "rec" console tool and test audio call via Skype) - no errors shown but the resulting recorded sound file does not have any sound.
First I thought it could be a hardware issue, but I've tried to run a Live CD of another popular linux distro and the recording went fine out of the box.

I would appreciate if you guys could help me in resolving this issue.

[Was_Just19]

Check all mixer settings for 'Capture' and 'MIC' .......  make sure they are enabled and the sliders up.

Try using arecord from a command line .....  there are lots of options to determine the hardware  etc.

[valera]

Here's my mixer window:



Here's what I have with arecord:


$ arecord -f cd -d 5 file.wav
Recording WAVE 'file.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo

$ ll | grep file
-rw-r--r--  1 dev dev     882044 May 17 00:07 file.wav

$ aplay file.wav
Playing WAVE 'file.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo


But nothing is played.
Hexdump shows the file has a "RIFF" WAV header and the rest of the file is filled with zeroes.

Any suggestions?

[Was_Just19]

If you have a HDMI output on your graphics card then the sound may be being sent to that .... it seems either the audio stream is being misdirected or does not have any volume/muted.

Using aplay options you can determine what sinks are available and direct the output to a specific sink.

aplay -l  &  aplay -L  might give you some ideas.

What DE are you using?

Have you considered installing Pulse Audion to help with the management of the sound sources and sound sinks?

regards.

[valera]

Have you considered installing Pulse Audion to help with the management of the sound sources and sound sinks?

Yeah, I've spent a couple of hours trying to install/run pulseaudio daemon and finally encountered this post: http://www.pclinuxos.com/forum/index.php/topic,71385.msg733329.html#msg733329 and really the task-pulseaudio-remove/task-pulseaudio worked for me - after reboot microphone recording/Skype calls work like a charm!

Thanks for pointing me to pulseaudio.

[Was_Just19]

Glad it worked out for you