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I have my PC hooked up to speakers and a monitor. In addition it is hooked up to my Vizio 37' LCD Telivision. When I was on Windows 7 I could choose to output sound via HDMI. I have the choice in Ubuntu but no sound is outputted. Any Ideas? I don't know how to get system specs on Ubuntu so if you need them please tell me how to get them.

PS. Sorry for the horrible grammar, It's 2:15 in the morning.

aplay -l output:

**** List of PLAYBACK Hardware Devices **** 
card 0: Intel [HDA Intel], 
device 0: ALC887 Analog [ALC887 Analog] 
Subdevices: 0/1 
Subdevice #0: 
subdevice #0 card 0: Intel [HDA Intel], device 3: ALC887 Digital [ALC887 Digital] Subdevices: 1/1 
Subdevice #0: subdevice #0 card 1: HDMI [HDA ATI HDMI], device 3: HDMI 0 [HDMI 0] Subdevices: 1/1 Subdevice #0: subdevice #0 
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I don't know how to provide any more data. –  Michael Mar 13 '12 at 18:12
    
At the very least we need to know what kind of sound card you're using: aplay -l –  hbdgaf Mar 13 '12 at 18:14
    
Any simple to use programs I can use that can provide such information? –  Michael Mar 13 '12 at 18:29
    
Stupid me, Sorry about that. **** List of PLAYBACK Hardware Devices **** card 0: Intel [HDA Intel], device 0: ALC887 Analog [ALC887 Analog] Subdevices: 0/1 Subdevice #0: subdevice #0 card 0: Intel [HDA Intel], device 3: ALC887 Digital [ALC887 Digital] Subdevices: 1/1 Subdevice #0: subdevice #0 card 1: HDMI [HDA ATI HDMI], device 3: HDMI 0 [HDMI 0] Subdevices: 1/1 Subdevice #0: subdevice #0 –  Michael Mar 13 '12 at 18:35
    
Have you checked that it's not muted in alsamixer? crunchbang is ubuntu derived and has a report of it being accidentally muted –  hbdgaf Mar 13 '12 at 18:43
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4 Answers

With the HDMI cable plugged in, run the following utility:

speaker-test -c 2 -r 48000 -D hw:0,3

(for others, the hw:x,y is x = card, y = device)

This just runs a sound test with static bouncing back and forth. Once it has played out of each speaker, hit Ctrl+c to stop it, and then check in your sound settings to see if the HDMI output is now listed under the internal device.

That was all I had to do to get it working. If it doesn't work for you, check out this tutorial for upgrading alsa to the ppa version.

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5  
This is ridiculous, but works admirably. Thanks. –  Pedro Werneck Mar 24 '13 at 2:50
1  
Upgrading alsa + installing pavucontrol as suggested by @gsdej 's post (instead of the speaker test) worked for me –  nariknahom Oct 28 '13 at 11:46
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You can try installing program "PulseAudio Volume Control" (sudo apt-get install pavucontrol)

In tab Configuration select profile mentioning HDMI.

The desktop sound output should immediately switch to HDMI.

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Thank you, this worked for me on 12.10, Intel HD 4000. For me, HDMI was not listed as an output device in the system's sound settings. But once I selected the HDMI profile in the configuration tab of the "Pulse Audio Volume Control", sound through HDMI worked and HDMI was even listed as an output device in the standard sound settings. Bryan's approach didn't work for me. –  Tobold Feb 28 '13 at 22:14
    
This also worked for me - ALSA could see it but Ubuntu's desktop couldn't. –  Tom Dalton Sep 10 '13 at 18:54
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"You can try installing program "PulseAudio Volume Control" (sudo apt-get install pavucontrol) and in tab "Configuration" select profile mentioning HDMI"

i try this and try update the kernel but nothing yet...

"$ aplay -l
**** Lista de Dispositivos PLAYBACK Hardware ****
placa 0: MID [HDA Intel MID], dispositivo 0: ALC269 Analog [ALC269 Analog]
  Dispositivo secundário: 1/1
  Dispositivo secundário #0: subdevice #0
placa 0: MID [HDA Intel MID], dispositivo 3: HDMI 0 [HDMI 0]
  Dispositivo secundário: 1/1
  Dispositivo secundário #0: subdevice #0
"
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install GNOME alsa mixer , unmute everything, check IEC958

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2  
While this may theoretically answer the question, it is too vague to be useful. Please expand it to include the steps needed to accomplish what you are suggesting. While experienced user may know how to do this, new user likely will not; it needs to be useful to all users. –  TrailRider Aug 18 '13 at 16:40
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