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Audio Over HDMI in Linhes 7
http://forum.linhes.org/viewtopic.php?f=21&t=22178		 Page 1 of 1
Author:  mediathreat [ Wed Jul 06, 2011 10:18 am ]
Post subject:  Audio Over HDMI in Linhes 7
Anyone running audio over HDMI under Linhes 7? I have a Nvidia gt240 and the aplay-l reads:

Code:
**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: ALC888 Analog [ALC888 Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: Intel [HDA Intel], device 1: ALC888 Digital [ALC888 Digital]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 3: HDMI 0 [HDMI 0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0


I can even play out audio on the command line out from
Code:
 speaker-test -c6 -twav -Dplughw:1,3

or
Code:
aplay -D plughw:1,3 /usr/share/sounds/alsa/Noise.wav


I've checked alsamixer and everything is unmuted.

I can't seem to get it playing under MythTV though except for ISO files - all other formats MP4, AVI, MOV etc - there is no audio.

Anyone have a solution or an idea how to get this up and running? I feel like it's pretty close.
Author:  snaproll [ Wed Jul 06, 2011 10:57 am ]
Post subject: 
I've tried a couple of 210 cards with no luck so far... :(
Author:  mediathreat [ Wed Jul 06, 2011 11:03 am ]
Post subject: 
Ahh, I had it working under LinHes 6 - all GT210-240 cards.
Somehow I don't quite know how to force the internal player to pipe to hw:1,3 in linhes 7
Author:  brfransen [ Wed Jul 06, 2011 1:18 pm ]
Post subject: 
I have audio over hdmi in LH7 on one of my machines with a 210 to a TV so it is stereo only. I am using using ALSA:hw:1,7 in the Myth General audio output device settings.

Britney
Author:  snaproll [ Wed Jul 06, 2011 1:58 pm ]
Post subject: 
What card ?
I have a couple of 210 cards that aren't recognized as an audio device.
Author:  brfransen [ Wed Jul 06, 2011 2:47 pm ]
Post subject: 
I think it is an EVGA but it may be a Sparkle 210. I have a Sparkle 220 in another machine and both the 210s and 220 won't show up on that machine until I disable the onboard audio and then they work.

Britney
Author:  snaproll [ Wed Jul 06, 2011 3:33 pm ]
Post subject: 
brfransen wrote:
..... until I disable the onboard audio and then they work.

Britney

Done how ?

I get one device showing up in the ALSA setup window (there would be the Nvidia card too if it read it, but it didn't) How to disable the ALSA device ?
Author:  brfransen [ Wed Jul 06, 2011 3:50 pm ]
Post subject: 
Disable it in the BIOS.
Author:  tjc [ Wed Jul 06, 2011 5:59 pm ]
Post subject: 
I've had it working with an Nvidia GeForce 210 (GT218 GPU) under both 7.0 and 6.04. I switched back to 6.04 due to some other issues with 7.0, but sound over HDMI works fine with 6.04 and updated ALSA drivers. Detailed directions are under one of the 210 threads...
Author:  mediathreat [ Fri Jul 08, 2011 10:42 pm ]
Post subject: 
Nailed it Again. Linhes 7 / GT240.

Code:
 aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: NVidia [HDA NVidia], device 3: HDMI 0 [HDMI 0]
  Subdevices: 0/1
  Subdevice #0: subdevice #0


My route. Disable Onboard Audio. Then put in this in /etc/modprobe.d/sound.conf

Code:
# cat sound.conf
alias snd-card-0 snd-ca0106
alias sound-slot-0 snd-ca0106
alias snd-card-1 snd-hda-intel
alias sound-slot-1 snd-hda-intel
options snd-hda-intel enable_msi=0 probe_mask=0xfff2


The alias isn't what's needed but the probe mask will isolate the working device/channel.

Then mythtv recognizes it as the default audio path when there is absolutely no competition.

Lastly - put this in your asound.conf to make sure you pump everything through HDMI

Code:
cat asound.conf
pcm.!default hdmi:NVidia
pcm:iec958 hdmi:NVidia


Oh yeah. Hope that helps.
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