Mute LED not working on HP (Realtek ALC245)

[Takashi Iwai]

On Mon, 30 Nov 2020 00:53:54 +0100,
Soham Sen wrote:
> 
> Hello,
> 
> I've been trying to debug the issue related to the microphone LED not
> working under Linux. I've confirmed that the LED works in windows.
> Seems like most HP laptops have this problem, and they are fixed by
> adding a model= parameter, however I've tried all HP mute LED related
> models on https://www.kernel.org/doc/html/latest/sound/hd-audio/models.html
> to no success. A very similar model to my laptop, running Intel HD
> Audio can be fixed by using model=hp-mute-led-mic3 but this didn't
> work on my laptop either.
> 
> Can I get any help on how to further debug this issue? I tried
> searching for the documentation for this audio card, but wasn't able
> to find anything useful.
> 
> Output of alsa-info.sh:
> http://alsa-project.org/db/?f=4173cebd458b6badbc21668461e9ba2e890333c2

I guess you've already tried to pass the model option, but judging
from the alsa-info.sh output, you passed it wrongly.  As the onboard
analog output is from the AMD HD-audio controller that is the
secondary card (while the primary card is Nvidia HDMI), you'd need to
pass "model=,XXX" (see the comma before "XXX"), i.e. set in the second
entry of the array.


Takashi