[PATCH] ALSA: hda/realtek: Add quirk for LG gram 16 (16Z90TR)

[PATCH] ALSA: hda/realtek: Add quirk for LG gram 16 (16Z90TR)

[Aaron Fan]

The LG gram 16 (16Z90TR, SSID 1854:0554) drives its internal speakers
through Samsung-style smart amplifiers on an ALC298. Nothing initialises
them, so the internal speakers are silent after a cold boot, while
headphones, HDMI and the microphones work.

A warm reset leaves the amps initialised, which masks the problem:
rebooting gives working speakers, a cold boot does not, with a
bit-identical kernel log in both cases. Dumping the codec's processing
coefficients in the two states shows the difference confined to COEF
0x22/0x23/0x25/0x26. COEF 0x22, the amp select register written by
alc298_samsung_v2_init_amps(), reads 0x39 when the speakers work and
0x00 after a cold boot. 0x39 is the second entry of
alc298_samsung_v2_amp_desc_tbl[], so two amps are in use.

Verified with hda_model=alc298-samsung-amp-v2-2-amps, which selects the
same fixup: the internal speakers work from a cold boot and COEF 0x22
reads 0x39.

Signed-off-by: Aaron Fan <aaronfan404@gmail.com>
---
 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 f7877127e..eac378e2f 100644
--- a/sound/hda/codecs/realtek/alc269.c
+++ b/sound/hda/codecs/realtek/alc269.c
@@ -8114,6 +8114,7 @@ static const struct hda_quirk alc269_fixup_tbl[] = {
 	SND_PCI_QUIRK(0x1854, 0x0489, "LG gram 16 (16Z90R-A)", ALC298_FIXUP_SAMSUNG_AMP_V2_4_AMPS),
 	SND_PCI_QUIRK(0x1854, 0x048a, "LG gram 17 (17ZD90R)", ALC298_FIXUP_SAMSUNG_AMP_V2_4_AMPS),
 	SND_PCI_QUIRK(0x1854, 0x0490, "LG Gram Style 14 (14Z90RS)", ALC298_FIXUP_LG_GRAM_STYLE_14),
+	SND_PCI_QUIRK(0x1854, 0x0554, "LG gram 16 (16Z90TR)", ALC298_FIXUP_SAMSUNG_AMP_V2_2_AMPS),
 	SND_PCI_QUIRK(0x19e5, 0x3204, "Huawei MACH-WX9", ALC256_FIXUP_HUAWEI_MACH_WX9_PINS),
 	SND_PCI_QUIRK(0x19e5, 0x320f, "Huawei WRT-WX9 ", ALC256_FIXUP_ASUS_MIC_NO_PRESENCE),
 	SND_PCI_QUIRK(0x19e5, 0x3212, "Huawei KLV-WX9 ", ALC256_FIXUP_ACER_HEADSET_MIC),
-- 
2.43.0

Re: [PATCH] ALSA: hda/realtek: Add quirk for LG gram 16 (16Z90TR)

[Takashi Iwai]

On Sun, 02 Aug 2026 07:57:27 +0200,
Aaron Fan wrote:
> 
> The LG gram 16 (16Z90TR, SSID 1854:0554) drives its internal speakers
> through Samsung-style smart amplifiers on an ALC298. Nothing initialises
> them, so the internal speakers are silent after a cold boot, while
> headphones, HDMI and the microphones work.
> 
> A warm reset leaves the amps initialised, which masks the problem:
> rebooting gives working speakers, a cold boot does not, with a
> bit-identical kernel log in both cases. Dumping the codec's processing
> coefficients in the two states shows the difference confined to COEF
> 0x22/0x23/0x25/0x26. COEF 0x22, the amp select register written by
> alc298_samsung_v2_init_amps(), reads 0x39 when the speakers work and
> 0x00 after a cold boot. 0x39 is the second entry of
> alc298_samsung_v2_amp_desc_tbl[], so two amps are in use.
> 
> Verified with hda_model=alc298-samsung-amp-v2-2-amps, which selects the
> same fixup: the internal speakers work from a cold boot and COEF 0x22
> reads 0x39.
> 
> Signed-off-by: Aaron Fan <aaronfan404@gmail.com>

Applied to for-next branch now.  Thanks.


Takashi