Re: [PATCH v2] ALSA: hda/realtek: Fix internal mic on Minisforum V3 and V3 SE

[Takashi Iwai]

On Mon, 28 Sep 2026 17:29:25 +0200,
Jared Wuerzburger wrote:
> 
> On the Minisforum V3 and V3 SE (ALC245, PCI SSID 1f4c:e001) the
> internal digital microphone array never produces any audio. The DMIC
> pin 0x12 is parsed correctly ("Internal Mic=0x12"), but the headset mic
> jack pin 0x19 (BIOS pin config 0x04a19050, jack detect enabled) has no
> presence detect wired on these boards: reading GET_PIN_SENSE on 0x19
> always returns "present" (as it does on the unused, unconnected pin
> 0x18), while the headphone jack 0x21 reports correctly.
> 
> The generic parser therefore sets up auto-mic switching and, believing
> an external mic is always plugged in, permanently routes the ADC to the
> empty jack (mixer 0x23 input 0x19 unmuted, input 0x12 muted). The
> "Mic Jack" kcontrol reports "on" with nothing plugged in.
> 
> Mark pin 0x19 as having no presence detect. The parser then stops
> auto-switching and exposes a normal "Capture Source" (Internal Mic /
> Mic) control, which desktop audio stacks drive from their Internal
> Microphone / Microphone ports. The existing bass speaker DAC routing is
> kept by chaining to ALC245_FIXUP_BASS_HP_DAC.
> 
> Tested on both models with the same pin config applied through a
> snd-hda-intel patch firmware ([pincfg] 0x19 0x04a19150):
>  - V3 SE (Ryzen 7 7735U, BIOS 1.03), kernel 7.2.6
>  - V3 (Ryzen 7 8840U, BIOS 1.06), kernel 7.2.7
> Both boards report the same codec SSID and the same 0x19 default. On
> both, the internal mic records at a normal level, headphone jack
> detection on 0x21 still switches output, and the bass routing is
> retained (DAC1/DAC2 Playback Volume controls present). A headset mic
> on the combo jack was not tested (none available); with this change it
> has to be selected manually. V3 users already report that the jack mic
> gets no input [1], which is the other symptom of the same broken
> presence detect.
> 
> The patched alc269.c was build-tested with W=1 on tiwai/sound.git
> for-linus (7.3-rc3) without new warnings.
> 
> The diagnosis, the fixup and this changelog were written with the help
> of an AI coding assistant; I reviewed them and tested the change on the
> hardware listed above.
> 
> Fixes: e34743018249 ("ALSA: hda/realtek: Add quirk for Minisforum V3 SE")
> Link: https://github.com/mudkipme/awesome-minisforum-v3/issues/14 [1]
> Cc: stable@xxxxxxxxxxxxxxx
> Assisted-by: LLM
> Signed-off-by: Jared Wuerzburger <jwuerz@xxxxxxxxx>
> ---
> Changes in v2:
> - Drop the alc269_fixup_models[] entry (Takashi)
> - Add Fixes: tag for the commit that added the V3 (SE) quirk (Takashi)
> - Assisted-by: LLM (Takashi)
> - v1: https://lore.kernel.org/linux-sound/20260927173237.339476-1-jwuerz@xxxxxxxxx/

Applied now to for-next branch.  Thanks.


Takashi