[SOLVED] Getting audio out HDMI port

interndan · 09-28-2016, 02:32 PM

This may turn into a multi-part multi-thread issue. I have my computer connect to a TV via HDMI. Originally I was using the NVIDIA drivers from SBO and managed to get audio working for most things I do. After the last upgrade the NVIDI drivers broke (of course, because the kernel changed). After the upgrade I got into a terminal and uninstalled the proprietary drivers and reverted to the nouveau drivers. Since doing that I have had no sound out of my system. I installed pulseaudio and pavucontrol but have had no success.

So I'll start by asking if the NVIDA proprietary drivers are required to make this work. If so I will rebuild and install them and go from there.

bassmadrigal · 09-28-2016, 02:53 PM

Is this 14.1 like your profile states or 14.2 (I ask because sometimes people forget to update them)? If so, you would likely need to change the order of devices through alsa. Since you installed Pulseaudio, things might be different, as I'm not familiar with how it works with alsa being the primary backend.

Can you provide the output of aplay -l?

interndan · 09-28-2016, 03:25 PM

Yes it is 14.1

Code:

bash-4.2$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: STAC9200 Analog [STAC9200 Analog]
  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
card 1: NVidia [HDA NVidia], device 7: HDMI 1 [HDMI 1]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
bash-4.2$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: STAC9200 Analog [STAC9200 Analog]
  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
card 1: NVidia [HDA NVidia], device 7: HDMI 1 [HDMI 1]
  Subdevices: 0/1
  Subdevice #0: subdevice #0

I meant to add which version but forgot. It isn't completely stock as I use LXDE and have installed other programs from SBO. (video editing, etc.)

interndan · 09-28-2016, 04:49 PM

Update. I seem to have a start now. Thanks to Bassmadrigal pointing me in the right direction. I modified my .asounrc and now have sound out the HDMI port. What I don't have now is any real control over volume. This may be an issue with my pulseaudio configuration but I'm not sure. I had to run alsamixer and re-select the correct card for output. Pavucontrol seems to have no effect. For some reason alsamixer keeps reverting to the analog output. Alsamixer also has no control over volume. I'm still don't know if proprietary drivers from NVIDIA would be any help.

bassmadrigal · 09-28-2016, 05:22 PM

Great, I'm glad I was able to nudge you along

What did you put in your .asoundrc?

To be honest, I doubt the proprietary drivers are needed for proper sound output, but I'm not terribly familiar Nvidia.

interndan · 09-28-2016, 05:27 PM

Here is current .asoundrc.

Code:

pcm.!default {
    type hw
    card 1
    device 7

Device was set to 3. I took a guess from looking a pavucontrol which says device two is connected.

bassmadrigal · 09-28-2016, 05:32 PM

Try this instead:

Code:

defaults.pcm.card 1
defaults.pcm.device 7
defaults.ctl.card 1

BTW, I just noticed your first post's code tags are screwed up. You used curly brackets for the opening and square brackets for the closing. This forum uses square brackets for tags

interndan · 09-28-2016, 05:43 PM

Fixed the code issue. That gives me control with alsamixer, but not with pavucontrol (pulseaudio controller)

bassmadrigal · 09-28-2016, 05:49 PM

pavucontrol on 14.1 is beyond my knowledge. I never used pulseaudio on 14.1, so I'm not sure how to make sure it's properly running along with pavucontrol in comparison to alsa. Hopefully someone else can come and chime in.

interndan · 09-28-2016, 05:55 PM

Thanks for the help you have given me. I at least have sound now so I can play my great-grandbabies cartoons for him.

I may need another thread for pulseaudio.

interndan · 09-29-2016, 11:08 AM

I'm going to mark this thread solved and open a new one for the pulseaudio issues.

dugan · 09-29-2016, 11:51 AM

Don't use an .asoundrc if you're using Pulseaudio.