Re: [PATCH] ALSA: hda: conexant: Remove mic bias threshold override

[Takashi Iwai]

On Mon, 13 Jul 2026 12:03:29 +0200,
Zhang Heng wrote:
> 
> Remove the mic bias current comparator threshold override (NID 0x1c,
> verb 0x320, value 0x010) from Conexant codec driver.
> 
> This override was originally intended to support volume up/down controls on
> headsets with inline remote controls, but it causes microphone detection
> failures on some headsets with impedance less than 1k ohm.
> 
> After consulting with the vendor's engineers, it was confirmed that this
> setting is board-specific and should be handled by BIOS/firmware rather
> than the generic codec driver, especially since inline remote support
> is not currently implemented.
> 
> Fixes: 7aeb25908648 ("ALSA: hda/conexant: Fix headset auto detect fail in cx8070 and SN6140")
> Cc: stable@xxxxxxxxxxxxxxx
> Signed-off-by: Zhang Heng <zhangheng@xxxxxxxxxx>

Applied now.  Thanks.


Takashi