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I have Asus Laptop model F6V with Ati Radeon HD 3470 graphics and Ubuntu 12.04.5 LTS (precise pargolin). I have set the the output to HDMI but get no sound. Speakers and headset are ok.

I tried several things but nothing: check with alsamixer if HDMI is unmuted, added

radeon.audio=1

to grub, added

options snd-hda-intel xxx model=xxx

with various options to /etc/modeprobe.d/alsa-base.conf. Reinstall pulseaudio, install pavucontrol, upgrade kernel to 3.13.0-46. HDMI audio was working with previous Ubuntu version (I think it was 11.10 Oneiric Ocelot).

aplay -l  
card 0 : Intel [ HDA Intel ] , device 0 : ALC662 rev1 Analog [ ALC662 rev1 Analog ]  
card 0 : Intel [ HDA Intel ] , device 1 : ALC662 rev1 Digital [ ALC662 rev1 Digital]  
card 1 : HDMI [ HDA ATI HDMI ] , device 3 : HDMI 0 [ HDMI 0 ] 

aplay -D plughw:1,3 ~/aa.wav  
Now Playing WAVE 'aa.wav' : Signed 16 bit Little Endian, Frequency 44100 Hz, Mono

I did't get any errors but no sound through HDMI

I tried also log on into guest session:

aplay -D plughw:1,3 ~/aa.wav  
Now Playing WAVE '/tmp/guest-8bTvdr/aa.wav : Signed 16 bit Little Endian, Frequency 44100 Hz, Mono

Same result, no errors but no sound through HDMI

cat /proc/asound/modules  
 0 snd_hda_intel  
 1 snd_hda_intel

I don't know if it is relevant but initially HDMI was not showed in the pulseaudio audio setting selection list. I had to edit /usr/share/pulseaudio/alsa-mixer/paths/hdmi-output-0.conf

  [Jack HDMI/DP,pcm=3]  
required -any = ignore

to be able to see audio setting selection list.

Hope to solve the problem

  • Welcome to Ask Ubuntu! ;-) Could you please give us a bit more information like: what version of Ubuntu you're currently running? What the previous version was? Does it work under the guest session? Please edit your question and add this information... – Fabby Mar 19 '15 at 17:18
  • @Fabby Thanks very much!! I have added the information – Alex Mar 20 '15 at 10:20

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