linux-kernel - Re: [PATCH] ALSA: hda/realtek: Add quirk for TongFang PHxTxX1

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Date:   Wed, 06 Oct 2021 16:10:30 +0200
From:   Takashi Iwai <tiwai@...e.de>
To:     Werner Sembach <wse@...edocomputers.com>
Cc:     perex@...ex.cz, tiwai@...e.com, alsa-devel@...a-project.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ALSA: hda/realtek: Add quirk for TongFang PHxTxX1

On Wed, 06 Oct 2021 15:04:15 +0200,
Werner Sembach wrote:
> 
> This applies a SND_PCI_QUIRK(...) to the TongFang PHxTxX1 barebone. This
> fixes the issue of the internal Microphone not working after booting
> another OS.
> 
> When booting a certain another OS this barebone keeps some coeff settings
> even after a cold shutdown. These coeffs prevent the microphone detection
> from working in Linux, making the Laptop think that there is always an
> external microphone plugged-in and therefore preventing the use of the
> internal one.
> 
> The relevant indexes and values where gathered by naively diff-ing and
> reading a working and a non-working coeff dump.
> 
> Signed-off-by: Werner Sembach <wse@...edocomputers.com>

Thanks, applied.


Takashi