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Sat, 01 Aug 2026 22:59:22 -0700 (PDT) From: Aaron Fan To: Takashi Iwai Cc: Jaroslav Kysela , linux-sound@vger.kernel.org, linux-kernel@vger.kernel.org, Aaron Fan Subject: [PATCH] ALSA: hda/realtek: Add quirk for LG gram 16 (16Z90TR) Date: Sun, 2 Aug 2026 01:57:27 -0400 Message-ID: <20260802055818.7389-1-aaronfan404@gmail.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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 --- 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