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I have installed ubuntu 14.04 LTS dual boot with windows 8. Sound doesn't work in ubuntu. I checked all answers for all similar questions but nothing helped me.

I have an asus n-550jk notebook.

In sound settings I can see speakers and analog output.

In PulseAudio Volume Control I can see that the volume bar is changing but there is no sound.

In Output devices tab of PAVUcontrol there are DIgital Stereo HDMI (all unplugged) and Analog Stereo (ports Speakers and Analog Output). The volume bar for analog stereo is also working.

The output for lspci | grep -i 'audio' is:

 00:03.0 Audio device: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor HD Audio Controller (rev 06)

 00:1b.0 Audio device: Intel Corporation 8 Series/C220 Series Chipset High Definition Audio Controller (rev 05)

The output for aplay -l is:

 **** List of PLAYBACK Hardware Devices ****
 card 0: HDMI [HDA Intel HDMI], device 3: HDMI 0 [HDMI 0]
   Subdevices: 0/1
   Subdevice #0: subdevice #0

 card 0: HDMI [HDA Intel HDMI], device 7: HDMI 1 [HDMI 1]
   Subdevices: 1/1
   Subdevice #0: subdevice #0

 card 1: PCH [HDA Intel PCH], device 0: ALC668 Analog [ALC668 Analog]
   Subdevices: 0/1
   Subdevice #0: subdevice #0

I have alsa and pulseaudio installed.

Please help!

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Since it seems to me that you have a dualboot setup this thread might have an answer to your problem.

Right here: No sound from laptop speakers in Ubuntu 14.04 after booting into Windows 8.1

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