Re: [PATCH 1/2] ALSA: hda/realtek: Limit Star Labs internal mic boost

From: Eric Naim

Date: Mon Aug 03 2026 - 03:24:25 EST


On 8/3/26 2:12 PM, Eric Naim wrote:
> Hi Sean,
>
> On 8/1/26 4:13 AM, Sean Rhodes wrote:
>> The 30 dB internal mic boost is too high for laptops, especially with fans. Limit Star Labs internal mic boost to 10 dB.
>>
>> Signed-off-by: Sean Rhodes <sean@starlabs.systems>
>> ---
>> sound/hda/codecs/realtek/alc269.c | 6 ++++++
>> 1 file changed, 6 insertions(+)
>>
>> diff --git a/sound/hda/codecs/realtek/alc269.c b/sound/hda/codecs/realtek/alc269.c
>> index 379e1458f4ac..42756a3f3f8e 100644
>> --- a/sound/hda/codecs/realtek/alc269.c
>> +++ b/sound/hda/codecs/realtek/alc269.c
>> @@ -4188,6 +4188,7 @@ enum {
>> ALC245_FIXUP_CLEVO_NOISY_MIC,
>> ALC269_FIXUP_VAIO_VJFH52_MIC_NO_PRESENCE,
>> ALC233_FIXUP_MEDION_MTL_SPK,
>> + ALC269_FIXUP_STARLABS_LIMIT_INT_MIC_BOOST,
>> ALC233_FIXUP_STARLABS_STARFIGHTER,
>> ALC294_FIXUP_BASS_SPEAKER_15,
>> ALC283_FIXUP_DELL_HP_RESUME,
>> @@ -6725,6 +6726,10 @@ static const struct hda_fixup alc269_fixups[] = {
>> { }
>> },
>> },
>> + [ALC269_FIXUP_STARLABS_LIMIT_INT_MIC_BOOST] = {
>> + .type = HDA_FIXUP_FUNC,
>> + .v.func = alc269_fixup_limit_int_mic_boost,
>> + },
>
> I guess the reason you're creating a new quirk is because the existing
> ALC269_FIXUP_LIMIT_INT_MIC_BOOST is chained to ALC269_FIXUP_THINKPAD_ACPI.
> This makes the quirk identical to ALC269_FIXUP_THINKPAD_ACPI. Would it be

s/ALC269_FIXUP_THINKPAD_ACPI/ALC233_FIXUP_INTEL_NUC8_BOOST

> worth reworking the existing ALC_269_FIXUP_LIMIT_INT_MIC_BOOST to not be
> chained and then create a new ALC269_FIXUP_THINKPAD_LIMIT (or similar) for
> whichever devices that need it?
>
> --
> Regards,
> Eric