[PATCH] ALSA: hda/realtek: Fix speakers on Lunnen Ground 14

From: Nikita Maksimov

Date: Mon Jul 20 2026 - 14:02:33 EST


The firmware on the Lunnen Ground 14 marks pin 0x1b as unused even
though the internal speakers are connected to it. As a result, the
speakers are not detected.

Add a pin configuration quirk for PCI subsystem ID 2782:a212 to configure
pin 0x1b as an internal speaker.

The pin configuration was tested on a Lunnen Ground 14 (DMI product LL4FA)
with an ALC269VC codec. The internal speakers and microphone work as
expected.

Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Nikita Maksimov <nickstogramm@xxxxxxxxx>
---
sound/hda/codecs/realtek/alc269.c | 9 +++++++++
1 file changed, 9 insertions(+)

diff --git a/sound/hda/codecs/realtek/alc269.c b/sound/hda/codecs/realtek/alc269.c
index 09e724749..97632d2f9 100644
--- a/sound/hda/codecs/realtek/alc269.c
+++ b/sound/hda/codecs/realtek/alc269.c
@@ -3906,6 +3906,7 @@ enum {
ALC269_FIXUP_DMIC_THINKPAD_ACPI,
ALC269VB_FIXUP_INFINIX_ZERO_BOOK_13,
ALC269VC_FIXUP_INFINIX_Y4_MAX,
+ ALC269VC_FIXUP_LUNNEN_GROUND_14,
ALC269VB_FIXUP_CHUWI_COREBOOK_XPRO,
ALC255_FIXUP_ACER_MIC_NO_PRESENCE,
ALC255_FIXUP_ASUS_MIC_NO_PRESENCE,
@@ -4389,6 +4390,13 @@ static const struct hda_fixup alc269_fixups[] = {
.chained = true,
.chain_id = ALC269_FIXUP_LIMIT_INT_MIC_BOOST
},
+ [ALC269VC_FIXUP_LUNNEN_GROUND_14] = {
+ .type = HDA_FIXUP_PINS,
+ .v.pins = (const struct hda_pintbl[]) {
+ { 0x1b, 0x90170150 }, /* internal speaker */
+ { }
+ },
+ },
[ALC269VB_FIXUP_CHUWI_COREBOOK_XPRO] = {
.type = HDA_FIXUP_PINS,
.v.pins = (const struct hda_pintbl[]) {
@@ -7974,6 +7982,7 @@ static const struct hda_quirk alc269_fixup_tbl[] = {
SND_PCI_QUIRK(0x2782, 0x1705, "MEDION E15433", ALC269VC_FIXUP_INFINIX_Y4_MAX),
SND_PCI_QUIRK(0x2782, 0x1707, "Vaio VJFE-ADL", ALC298_FIXUP_SPK_VOLUME),
SND_PCI_QUIRK(0x2782, 0x4900, "MEDION E15443", ALC233_FIXUP_MEDION_MTL_SPK),
+ SND_PCI_QUIRK(0x2782, 0xa212, "Lunnen Ground 14", ALC269VC_FIXUP_LUNNEN_GROUND_14),
SND_PCI_QUIRK(0x7017, 0x2014, "Star Labs StarFighter", ALC233_FIXUP_STARLABS_STARFIGHTER),
SND_PCI_QUIRK(0x8086, 0x2074, "Intel NUC 8", ALC233_FIXUP_INTEL_NUC8_DMIC),
SND_PCI_QUIRK(0x8086, 0x2080, "Intel NUC 8 Rugged", ALC256_FIXUP_INTEL_NUC8_RUGGED),

base-commit: 2d0769387594eb26df33c72c08c6429e4fddf5fd
--
2.50.1