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I'm trying to output 5.1 audio thru hdmi to a 5.1 home theatre receiver, but can only get stereo out to it. I have another laptop that can output 5.1 to it just fine.

Under Sound Settings > Output > HDMI, I don't see the drop down menu for 5.1 Surround like I do in my other laptop.

aplay -l :

**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: ALC272 Analog [ALC272 Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: Intel [HDA Intel], device 3: HDMI 0 [HDMI 0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

speaker-test -l 4 -c 6 -r 48000 -D hw:0,3 :

speaker-test 1.0.27.1

Playback device is hw:0,3
Stream parameters are 48000Hz, S16_LE, 6 channels
Using 16 octaves of pink noise
Channels count (6) not available for playbacks: Invalid argument
Setting of hwparams failed: Invalid argument

Any help appreciated

share|improve this question
    
Are you sure that the hardware in that laptop actually supports six channels of LPCM data? –  CL. Jan 27 at 15:47
    
Oh that's a good question, how do I find out? –  Adam Jan 27 at 15:57

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