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I have a fresh install of 14.04.1 on a Asus N550J and I have no sound whatsoever. I have googled and found the original culprit was because the HDMI was set to the default output, this was solved (I think) by following instructions I found on a site by creating /etc/asound.conf and adding the lines:

defaults.pcm.card 1 defaults.pcm.device 0 defaults.ctl.card 1

Now when I run alsamixer in a terminal, the first device it shows is the HDA Intel PCH device, but still I get no sound.

I have also tried following other instructions I found on another site which involved purging alsabase and pulseaudio and then reinstalling them (which also required running apt-get install ubuntu-desktop too as it removed a few things). The only other instruction I can find is to edit /etc/default/speech-dispatcher and change RUN=yes to RUN=no, but it was already set to NO after installation.

I also tried a fresh install with 14.10 but no difference.

I have also realised that the sound works fine with headphones plugged in, just not when they are not.

This is the output of aplay -l:

**** List of PLAYBACK Hardware Devices ****
card 0: HDMI [HDA Intel HDMI], device 3: HDMI 0 [HDMI 0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: HDMI [HDA Intel HDMI], device 7: HDMI 1 [HDMI 1]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: HDMI [HDA Intel HDMI], device 8: HDMI 2 [HDMI 2]
  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

Please let me know if there is any more info you need to diagnose, or what other tips you have to fix this

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  • asound.conf affects only programs using ALSA. Tell PulseAudio that you want to use the PCH device (pavucontrol).
    – CL.
    Dec 18, 2014 at 16:24
  • I have installed pavucontrol and the pch device is set to master and all is unmuted. But still no sound
    – Barry Grant
    Dec 18, 2014 at 16:36
  • So when you plug in headphones the speakers start playing? (I'm confused)
    – Fabby
    Dec 18, 2014 at 22:33
  • No, if I plug in headphones then I get sound through the headphones. But with no headphones plugged in, there is no sound through the speakers
    – Barry Grant
    Dec 19, 2014 at 4:07

1 Answer 1

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  • Check , in alsamixer, "speaker" fader is not muted and try to tweak "automute" control state ( using arrow keys)

  • Check also in pavucontrol ( install it is not present) "output device" tab : you should have 2 ports available(headphone and speaker )

  • It seems some people have problem with standby mode : sometime speaker works coming from standby : look this recent question : Realtek ALC662 rev3 speaker problem

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