From 8acd6469f42784f38872ad83b14c41152d986b63 Mon Sep 17 00:00:00 2001 From: Scott Gauche Date: Mon, 5 Oct 2026 11:40:17 -0400 Subject: [PATCH] ALSA: hda/realtek: Fix audio after Windows reboot on ASUS Q423SA The ASUS Vivobook S 14 Q423SA-U5512 (DMI family S5406SA) with the ALC294 codec has working analog audio when booted directly after a full shutdown. After a warm reboot from Windows 11, audio works briefly during Linux startup, then both the internal speakers and headphones become silent. PCM playback continues without errors. Coefficient 0x1b is 0x4e4b on a direct cold boot, but 0x4a4b after the Windows warm reboot. Restoring bit 10 changes it back to 0x4e4b and immediately enables both analog outputs. Speaker playback, headphone playback, jack switching, cold boot, and suspend/resume were tested successfully. The same 0x4a4b state and immediate recovery with 0x4e4b were independently confirmed on another S5406SA with subsystem 1043:10c4. The same coefficient write is already used by ALC294_FIXUP_ASUS_COEF_1B for the ASUS UX431DA. That fixup cannot be reused here because it chains to ALC289_FIXUP_ASUS_GA401 and applies unrelated DAC routing and microphone pin configuration. Add a model-specific fixup for subsystem 1043:10c4 and chain it to the existing ALC2XX_FIXUP_HEADSET_MIC fixup instead. Link: https://github.com/thesofproject/sof/issues/11051 Fixes: f2d08f3651fb ("ALSA: hda/realtek: Fix headset mic on ASUS Vivobook S14 S5406SA") Signed-off-by: Scott Gauche Link: https://patch.msgid.link/20261005154017.1164657-1-scott-dev@scottgauche.com Signed-off-by: Takashi Iwai --- sound/hda/codecs/realtek/alc269.c | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) diff --git a/sound/hda/codecs/realtek/alc269.c b/sound/hda/codecs/realtek/alc269.c index 4f5537cabb00..3a3244fe3a8f 100644 --- a/sound/hda/codecs/realtek/alc269.c +++ b/sound/hda/codecs/realtek/alc269.c @@ -4289,6 +4289,7 @@ enum { ALC294_FIXUP_ASUS_I2C_HEADSET_MIC, ALC294_FIXUP_ASUS_SPI_HEADSET_MIC, ALC294_FIXUP_ASUS_SPK, + ALC294_FIXUP_ASUS_Q423SA, ALC293_FIXUP_SYSTEM76_MIC_NO_PRESENCE, ALC285_FIXUP_LENOVO_PC_BEEP_IN_NOISE, ALC255_FIXUP_ACER_HEADSET_MIC, @@ -5772,6 +5773,17 @@ static const struct hda_fixup alc269_fixups[] = { .chained = true, .chain_id = ALC294_FIXUP_ASUS_HEADSET_MIC }, + [ALC294_FIXUP_ASUS_Q423SA] = { + .type = HDA_FIXUP_VERBS, + .v.verbs = (const struct hda_verb[]) { + /* Restore bit 10 lost after reboot from Windows */ + { 0x20, AC_VERB_SET_COEF_INDEX, 0x1b }, + { 0x20, AC_VERB_SET_PROC_COEF, 0x4e4b }, + { } + }, + .chained = true, + .chain_id = ALC2XX_FIXUP_HEADSET_MIC, + }, [ALC295_FIXUP_CHROME_BOOK] = { .type = HDA_FIXUP_FUNC, .v.func = alc295_fixup_chromebook, @@ -7965,7 +7977,7 @@ static const struct hda_quirk alc269_fixup_tbl[] = { SND_PCI_QUIRK(0x1043, 0x10a1, "ASUS UX391UA", ALC294_FIXUP_ASUS_SPK), SND_PCI_QUIRK(0x1043, 0x10a4, "ASUS TP3407SA", ALC287_FIXUP_TAS2781_I2C), SND_PCI_QUIRK(0x1043, 0x10c0, "ASUS X540SA", ALC256_FIXUP_ASUS_MIC), - SND_PCI_QUIRK(0x1043, 0x10c4, "ASUS Vivobook S14 S5406SA", ALC2XX_FIXUP_HEADSET_MIC), + SND_PCI_QUIRK(0x1043, 0x10c4, "ASUS S5406SA/Q423SA", ALC294_FIXUP_ASUS_Q423SA), SND_PCI_QUIRK(0x1043, 0x10d0, "ASUS X540LA/X540LJ", ALC255_FIXUP_ASUS_MIC_NO_PRESENCE), SND_PCI_QUIRK(0x1043, 0x10d3, "ASUS K6500ZC", ALC294_FIXUP_ASUS_SPK), SND_PCI_QUIRK(0x1043, 0x1154, "ASUS TP3607SH", ALC287_FIXUP_TAS2781_I2C),