The internal microphone on Lenovo IdeaPad Slim 3 15ABR8 (subsystem
17aa:3862) exhibits severe distortion at default gain levels. The
Capture Volume is fixed at 63 (max) and cannot be lowered without
explicit userspace intervention. The existing fixup
ALC269_FIXUP_LIMIT_INT_MIC_BOOST limits the gain range and resolves
the issue.

Closes: https://bugzilla.kernel.org/show_bug.cgi?id=221891
Signed-off-by: Zhang Heng <zhangheng@kylinos.cn>
---
 sound/hda/codecs/realtek/alc269.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sound/hda/codecs/realtek/alc269.c b/sound/hda/codecs/realtek/alc269.c
index fe553db5b52f..0a0277a95cdd 100644
--- a/sound/hda/codecs/realtek/alc269.c
+++ b/sound/hda/codecs/realtek/alc269.c
@@ -8068,6 +8068,7 @@ static const struct hda_quirk alc269_fixup_tbl[] = {
 	SND_PCI_QUIRK(0x17aa, 0x3852, "Lenovo Yoga 7 14ITL5", ALC287_FIXUP_YOGA7_14ITL_SPEAKERS),
 	SND_PCI_QUIRK(0x17aa, 0x3853, "Lenovo Yoga 7 15ITL5", ALC287_FIXUP_YOGA7_14ITL_SPEAKERS),
 	SND_PCI_QUIRK(0x17aa, 0x3855, "Legion 7 16ITHG6", ALC287_FIXUP_LEGION_16ITHG6),
+	SND_PCI_QUIRK(0x17aa, 0x3862, "Lenovo IdeaPad Slim 3 15ABR8", ALC269_FIXUP_LIMIT_INT_MIC_BOOST),
 	SND_PCI_QUIRK(0x17aa, 0x3865, "Lenovo 13X", ALC287_FIXUP_CS35L41_I2C_2),
 	SND_PCI_QUIRK(0x17aa, 0x3866, "Lenovo 13X", ALC287_FIXUP_CS35L41_I2C_2),
 	SND_PCI_QUIRK(0x17aa, 0x3869, "Lenovo Yoga7 14IAL7", ALC287_FIXUP_YOGA9_14IAP7_BASS_SPK_PIN),
-- 
2.25.1

On Mon, 24 Aug 2026 14:37:52 +0200,
Zhang Heng wrote:
> 
> The internal microphone on Lenovo IdeaPad Slim 3 15ABR8 (subsystem
> 17aa:3862) exhibits severe distortion at default gain levels. The
> Capture Volume is fixed at 63 (max) and cannot be lowered without
> explicit userspace intervention. The existing fixup
> ALC269_FIXUP_LIMIT_INT_MIC_BOOST limits the gain range and resolves
> the issue.
> 
> Closes: https://bugzilla.kernel.org/show_bug.cgi?id=221891
> Signed-off-by: Zhang Heng <zhangheng@kylinos.cn>

Applied now.  Thanks.


Takashi