diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index e1fbda215975..cca093cb643e 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -6817,6 +6817,43 @@ static void alc_fixup_dell4_mic_no_presence_quiet(struct hda_codec *codec,
 	}
 }
 
+static void alc287_fixup_yoga9_14iap7_bass_spk_pin(struct hda_codec *codec,
+					  const struct hda_fixup *fix, int action)
+{
+	/*
+	 * The Pin Complex 0x17 for the bass speakers is wrongly reported as
+	 * unconnected.
+	 */
+	static const struct hda_pintbl pincfgs[] = {
+		{ 0x17, 0x90170121 },
+		{ }
+	};
+	/*
+	 * Avoid DAC 0x06 and 0x08, as they have no volume controls.
+	 * DAC 0x02 and 0x03 would be fine.
+	 */
+	static const hda_nid_t conn[] = { 0x02, 0x03 };
+	/*
+	 * Prefer both speakerbar (0x14) and bass speakers (0x17) connected to DAC 0x02.
+	 * Headphones (0x21) are connected to DAC 0x03.
+	 */
+	static const hda_nid_t preferred_pairs[] = {
+		0x14, 0x02,
+		0x17, 0x02,
+		0x21, 0x03,
+		0
+	};
+	struct alc_spec *spec = codec->spec;
+
+	switch (action) {
+	case HDA_FIXUP_ACT_PRE_PROBE:
+		snd_hda_apply_pincfgs(codec, pincfgs);
+		snd_hda_override_conn_list(codec, 0x17, ARRAY_SIZE(conn), conn);
+		spec->gen.preferred_dacs = preferred_pairs;
+		break;
+	}
+}
+
 enum {
 	ALC269_FIXUP_GPIO2,
 	ALC269_FIXUP_SONY_VAIO,
@@ -7054,6 +7091,8 @@ enum {
 	ALC285_FIXUP_HP_SPEAKERS_MICMUTE_LED,
 	ALC295_FIXUP_FRAMEWORK_LAPTOP_MIC_NO_PRESENCE,
 	ALC287_FIXUP_LEGION_16ITHG6,
+	ALC287_FIXUP_YOGA9_14IAP7_BASS_SPK,
+	ALC287_FIXUP_YOGA9_14IAP7_BASS_SPK_PIN,
 };
 
 /* A special fixup for Lenovo C940 and Yoga Duet 7;
@@ -8900,6 +8939,74 @@ static const struct hda_fixup alc269_fixups[] = {
 		.type = HDA_FIXUP_FUNC,
 		.v.func = alc287_fixup_legion_16ithg6_speakers,
 	},
+	[ALC287_FIXUP_YOGA9_14IAP7_BASS_SPK] = {
+		.type = HDA_FIXUP_VERBS,
+		.v.verbs = (const struct hda_verb[]) {
+			// enable left speaker
+			{ 0x20, AC_VERB_SET_COEF_INDEX, 0x24 },
+			{ 0x20, AC_VERB_SET_PROC_COEF, 0x41 },
+
+			{ 0x20, AC_VERB_SET_COEF_INDEX, 0x26 },
+			{ 0x20, AC_VERB_SET_PROC_COEF, 0xc },
+			{ 0x20, AC_VERB_SET_PROC_COEF, 0x0 },
+			{ 0x20, AC_VERB_SET_PROC_COEF, 0x1a },
+			{ 0x20, AC_VERB_SET_PROC_COEF, 0xb020 },
+
+			{ 0x20, AC_VERB_SET_COEF_INDEX, 0x26 },
+			{ 0x20, AC_VERB_SET_PROC_COEF, 0xf },
+			{ 0x20, AC_VERB_SET_PROC_COEF, 0x0 },
+			{ 0x20, AC_VERB_SET_PROC_COEF, 0x42 },
+			{ 0x20, AC_VERB_SET_PROC_COEF, 0xb020 },
+
+			{ 0x20, AC_VERB_SET_COEF_INDEX, 0x26 },
+			{ 0x20, AC_VERB_SET_PROC_COEF, 0x10 },
+			{ 0x20, AC_VERB_SET_PROC_COEF, 0x0 },
+			{ 0x20, AC_VERB_SET_PROC_COEF, 0x40 },
+			{ 0x20, AC_VERB_SET_PROC_COEF, 0xb020 },
+
+			{ 0x20, AC_VERB_SET_COEF_INDEX, 0x26 },
+			{ 0x20, AC_VERB_SET_PROC_COEF, 0x2 },
+			{ 0x20, AC_VERB_SET_PROC_COEF, 0x0 },
+			{ 0x20, AC_VERB_SET_PROC_COEF, 0x0 },
+			{ 0x20, AC_VERB_SET_PROC_COEF, 0xb020 },
+
+			// enable right speaker
+			{ 0x20, AC_VERB_SET_COEF_INDEX, 0x24 },
+			{ 0x20, AC_VERB_SET_PROC_COEF, 0x46 },
+
+			{ 0x20, AC_VERB_SET_COEF_INDEX, 0x26 },
+			{ 0x20, AC_VERB_SET_PROC_COEF, 0xc },
+			{ 0x20, AC_VERB_SET_PROC_COEF, 0x0 },
+			{ 0x20, AC_VERB_SET_PROC_COEF, 0x2a },
+			{ 0x20, AC_VERB_SET_PROC_COEF, 0xb020 },
+
+			{ 0x20, AC_VERB_SET_COEF_INDEX, 0x26 },
+			{ 0x20, AC_VERB_SET_PROC_COEF, 0xf },
+			{ 0x20, AC_VERB_SET_PROC_COEF, 0x0 },
+			{ 0x20, AC_VERB_SET_PROC_COEF, 0x46 },
+			{ 0x20, AC_VERB_SET_PROC_COEF, 0xb020 },
+
+			{ 0x20, AC_VERB_SET_COEF_INDEX, 0x26 },
+			{ 0x20, AC_VERB_SET_PROC_COEF, 0x10 },
+			{ 0x20, AC_VERB_SET_PROC_COEF, 0x0 },
+			{ 0x20, AC_VERB_SET_PROC_COEF, 0x44 },
+			{ 0x20, AC_VERB_SET_PROC_COEF, 0xb020 },
+
+			{ 0x20, AC_VERB_SET_COEF_INDEX, 0x26 },
+			{ 0x20, AC_VERB_SET_PROC_COEF, 0x2 },
+			{ 0x20, AC_VERB_SET_PROC_COEF, 0x0 },
+			{ 0x20, AC_VERB_SET_PROC_COEF, 0x0 },
+			{ 0x20, AC_VERB_SET_PROC_COEF, 0xb020 },
+
+			{ },
+		},
+	},
+	[ALC287_FIXUP_YOGA9_14IAP7_BASS_SPK_PIN] = {
+		.type = HDA_FIXUP_FUNC,
+		.v.func = alc287_fixup_yoga9_14iap7_bass_spk_pin,
+		.chained = true,
+		.chain_id = ALC287_FIXUP_YOGA9_14IAP7_BASS_SPK,
+	},
 };
 
 static const struct snd_pci_quirk alc269_fixup_tbl[] = {
@@ -9352,6 +9459,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
 	SND_PCI_QUIRK(0x17aa, 0x3176, "ThinkCentre Station", ALC283_FIXUP_HEADSET_MIC),
 	SND_PCI_QUIRK(0x17aa, 0x3178, "ThinkCentre Station", ALC283_FIXUP_HEADSET_MIC),
 	SND_PCI_QUIRK(0x17aa, 0x31af, "ThinkCentre Station", ALC623_FIXUP_LENOVO_THINKSTATION_P340),
+	SND_PCI_QUIRK(0x17aa, 0x3801, "Lenovo Yoga9 14IAP7", ALC287_FIXUP_YOGA9_14IAP7_BASS_SPK_PIN),
 	SND_PCI_QUIRK(0x17aa, 0x3802, "Lenovo Yoga DuetITL 2021", ALC287_FIXUP_YOGA7_14ITL_SPEAKERS),
 	SND_PCI_QUIRK(0x17aa, 0x3813, "Legion 7i 15IMHG05", ALC287_FIXUP_LEGION_15IMHG05_SPEAKERS),
 	SND_PCI_QUIRK(0x17aa, 0x3818, "Lenovo C940 / Yoga Duet 7", ALC298_FIXUP_LENOVO_C940_DUET7),
@@ -9598,6 +9706,7 @@ static const struct hda_model_fixup alc269_fixup_models[] = {
 	{.id = ALC285_FIXUP_HP_SPECTRE_X360, .name = "alc285-hp-spectre-x360"},
 	{.id = ALC285_FIXUP_HP_SPECTRE_X360_EB1, .name = "alc285-hp-spectre-x360-eb1"},
 	{.id = ALC287_FIXUP_IDEAPAD_BASS_SPK_AMP, .name = "alc287-ideapad-bass-spk-amp"},
+	{.id = ALC287_FIXUP_YOGA9_14IAP7_BASS_SPK_PIN, .name = "alc287-yoga9-bass-spk-pin"},
 	{.id = ALC623_FIXUP_LENOVO_THINKSTATION_P340, .name = "alc623-lenovo-thinkstation-p340"},
 	{.id = ALC255_FIXUP_ACER_HEADPHONE_AND_MIC, .name = "alc255-acer-headphone-and-mic"},
 	{.id = ALC285_FIXUP_HP_GPIO_AMP_INIT, .name = "alc285-hp-amp-init"},