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Ubuntu 14.04 no sound neither headphones nor laptop speaker.

I've no other operating system installed details attached.

I've removed & reinstall the alsamixer & stuffs. I also installed audio dkms packages.

My Rthymbox vlc shows it's playing but no sounds can be heard.

I got HDA Intel MID sound card are attached details.

Screenshots enter image description here

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To check the sound configuration install pavucontrol for pulseaudio:

sudo apt-get install pavucontrol

Now start it and check if the output has the right configuration, it might be something like audio duplex

Check if the output device is muted and also check that the application use the right sound card. Could you add screen shots to your posts from pavucontrol?

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