Re: [PATCH] ALSA: hda/realtek: Fix speaker silence after S3 resume on Xiaomi Mi Laptop Pro 15

[Takashi Iwai <tiwai@suse.de>]

On Thu, 30 Apr 2026 00:09:03 +0200,
Yuriy Padlyak wrote:
> 
> The Xiaomi Mi Laptop Pro 15 (TM1905, subsystem 1d72:1905) ships with the
> Realtek ALC256 codec on Intel Comet Lake PCH-LP. After S3 resume the
> codec sets coefficient register 0x10 to 0x0220 instead of 0x0020 ― bit 9
> is erroneously set, which silences the internal speaker. Bluetooth and
> HDMI audio are unaffected because they use different paths.
> 
> This is the same mechanism fixed for Clevo NJ51CU by commit edca7cc4b0ac
> ("ALSA: hda/realtek: Fix quirk for Clevo NJ51CU"), but the existing
> ALC256_FIXUP_MIC_NO_PRESENCE_AND_RESUME also reconfigures pin 0x19 as a
> front mic, which is wrong for this Xiaomi where pin 0x19 default is
> 0x411111f0 (disabled). Add a minimal fixup that only clears the stuck
> coef bit, and add the Xiaomi SSID to the quirk table.
> 
> Verified by reading coef 0x10 with hda-verb after resume (returns
> 0x0220), writing 0x0020, and confirming the internal speaker resumes
> output. With this fixup applied the bit is cleared on every codec init,
> including post-resume.
> 
> Signed-off-by: Yuriy Padlyak <yuriypadlyak@gmail.com>
> Cc: <stable@vger.kernel.org>
> Tested-by: Yuriy Padlyak <yuriypadlyak@gmail.com>

Thanks, applied now.


Takashi