No LFE Output

[Malvazar]

Would anyone know why I"m not getting any output on the LFE channel on my desktop? All other channels work perfectly fine including the center channel. It just the LFE channel that's not reporting.
lspci reports my cards as:
Audio device: Advanced Micro Devices, Inc. [AMD/ATI] SBx00 Azalia (Intel HDA) (rev 40)
It's the built-in hardware on a MSI 970 Gaming motherboard. Specificity the 3.5mm jacks on the back.

[MrEen]

Hi Malvazar.

Let's get a look at your sound setup with this command:

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curl https://gitlab.freedesktop.org/pulseaudio/pulseaudio/raw/master/src/utils/pa-info?inline=false | bash | nc termbin.com 9999

The last line of output will have a URL pointing to the info.

[Malvazar]

Here is the output.
https://termbin.com/hjsu

[MrEen]

Everything looks like it should for the LFE output. PulseAudio volumes are all the same, alsamixer volumes are all the same, nothing is muted.

Have you tried fiddling with the jack itself? Give a little twist as you push on it.

And it looks like you tried HDAJackRetask. Did you find something other than 0x16 that could be changed to CLFE?

[Malvazar]

I've tried everything over the years. For some unknown to me reason, it just doesn't work. At least not on linux, seams to work fine in windows as far as I can remember.
As far jack retask goes 0x17 was not assigned anything, but I can't get it to work either. Just says its busy when you hit apply.

[MrEen]

0x17 was already your side channels, so that might explain the The codec is being used, can't reconfigure. errors.
Are you actually using a 7.1 system? If only 5.1, we could try changing 0x17 then using Install boot override and rebooting to test.

[Malvazar]

Yes, all my hardware is made for 7.1 surround.

[MrEen]

Okay, open HDAJackRetask again and check the box for Show unconnected pins. Can any other not connected pin be changed to CLFE? I realize you may have already done that, but I just want to make sure you looked at truly not connected pins.

[Malvazar]

Ya I did try that too. Unfortunately there doesn't seem to be any unconnected pins, as nothing new shows up when I check the box. I also noticed just a few minutes ago that my SPDIF connection only allows for stereo output for some reason.

[MrEen]

Okay, one more test we should try:

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speaker-test -t wav -c 8

Let that run through the channels. Use Ctrl+C to stop it afterwards. Any luck with LFE there?

For the S/PDIF surround options, read [urlhttps://forums.linuxmint.com/viewtopic.php?p=1770290#p1770290]this post[/url] and onward from another thread on the topic. I'll warn now that it works for some and doesn't for others.

[Malvazar]

YES! I actually hear something from the LFE channel from that test.

[MrEen]

Hey, progress!

I have to assume it's one of the settings in /etc/pulse/daemon.conf causing it then.

Mine looks like this:

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; resample-method = speex-float-1
; avoid-resampling = false
; enable-remixing = yes
; remixing-use-all-sink-channels = yes
; enable-lfe-remixing = no
; lfe-crossover-freq = 0

But yours looks like this:

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; resample-method = speex-float-1
; avoid-resampling = false
; enable-remixing = yes
; remixing-use-all-sink-channels = yes
; remixing-produce-lfe = no
; remixing-consume-lfe = no
; lfe-crossover-freq = 0

I'm honestly not sure what should be changed, but I'd give this a shot from memory:

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lfe-crossover-freq = 60

Note the semicolon is gone at the beginning of the line along with the number change.

Try that, then run pulseaudio -k to pick up the change.

[Malvazar]

Okay, I made the change and noticed something interesting when I tested again. Initially I wasn't getting anything from the channel again using to test panel in the sound setting gui. So I quickly tried the test in the terminal again, and it didn't want to work for a second then just all of a sudden at the last second sprang to life. Almost like something had to turn on, or the signal was delayed. Hope that makes sense.

[MrEen]

then just all of a sudden at the last second sprang to life. Almost like something had to turn on, or the signal was delayed. Hope that makes sense.

It might. Try this:

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sudo tee /etc/modprobe.d/snd-hda-intel.conf <<<'options snd-hda-intel power_save=0'

Run that then reboot and test s'more.

[MrEen]

This might help also:

Run xed admin:///etc/pulse/default.pa and find this section of the file:

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### Automatically suspend sinks/sources that become idle for too long
load-module module-suspend-on-idle

Change it to this:

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### Automatically suspend sinks/sources that become idle for too long
# load-module module-suspend-on-idle

Save the change then reboot and test.

[Malvazar]

Hey! That may have actually done it. Got it to fire off in the sound panel first try that time. After disabling the automatic suspend command that is.

[MrEen]

Fingers crossed here!

[Malvazar]

Everything fired off in Celluliod with a 7.1 test video. I'm pretty pleased with that! Now just wish firefox would do the same, but I'll fight that battle another day. lol
Thanks for all the amazing help!

[MrEen]

You're welcome.