Re: [PATCH] ALSA: hda/realtek: Add mute LED fixup for HP Pavilion 15-cs1xxx

[Takashi Iwai <tiwai@suse.de>]

On Mon, 04 May 2026 16:53:37 +0200,
Rodrigo Faria wrote:
> 
> Add a new fixup for the mute LED on the HP Pavilion 15-cs series
> using the VREF on NID 0x1b. These models will no longer fall back
> to the generic 103c:0000.

So your model has a PCI SSID *:0000?  Or what does this mean exactly?

> Signed-off-by: Rodrigo Faria <rodrigofilipefaria@gmail.com>
> ---
>  sound/hda/codecs/realtek/alc269.c | 20 ++++++++++++++++++++
>  1 file changed, 20 insertions(+)
> 
> diff --git a/sound/hda/codecs/realtek/alc269.c b/sound/hda/codecs/realtek/alc269.c
> index a9cd03bb7..1db72bf28 100644
> --- a/sound/hda/codecs/realtek/alc269.c
> +++ b/sound/hda/codecs/realtek/alc269.c
> @@ -1669,6 +1669,20 @@ static void alc295_fixup_hp_mute_led_coefbit11(struct hda_codec *codec,
>  	}
>  }
>  
> +static void alc295_fixup_hp_pavilion_mute_led_1b(struct hda_codec *codec,
> +						 const struct hda_fixup *fix,
> +						 int action)
> +{
> +	struct alc_spec *spec = codec->spec;
> +
> +	alc269_fixup_hp_mute_led(codec, fix, action);
> +
> +	if (action == HDA_FIXUP_ACT_PRE_PROBE) {
> +		spec->mute_led_nid = 0x1b;
> +		spec->mute_led_polarity = 0;
> +	}

Hm, the BIOS gives a wrong pin number via DMI?
This bug pattern is new.

I can take the patch, but I'd like to understand better what's going
on.


thanks,

Takashi