Public bug reported:
ThinkPad P16s Gen 4 (21QRCTO1WW), Ubuntu 24.04, kernel 6.17.0-1023-oem
with oem-sutton-daiwa-meta.
The speaker amplifier does not mute when headphones are connected,
causing audible white noise from speakers during silence in calls even when
audio output is routed to headphones.
Root cause: SSID 17aa:512f (ALC257) is not in patch_realtek.c,
so the driver falls back to a generic fixup with no auto-mute logic.
Evidence from dmesg:
snd_hda_codec_alc269 hdaudioC1D0: ALC257: picked fixup for PCI SSID 17aa:0000
Codec info:
Vendor Id: 0x10ec0257
Subsystem Id: 0x17aa512f
** Affects: linux-oem-6.17 (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2152915
Title:
ALC257 speaker amp not muting with headphones on ThinkPad P16s Gen 4
(21QRCTO1WW) - SSID 17aa:512f missing from patch_realtek.c
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