[PATCH 1/2] ALSA: hda/realtek: Add generic quirk for Bass speaker DAC avoidance
From: Samuel Dionne-Riel
Date: Sun Feb 01 2026 - 18:13:02 EST
This change is for the follow-up commit, where the match on the specific
device (Minisforum V3 SE) is added.
This pattern (re-routing the bass speakers off of a DAC without volume
control) seems common enough that having a "model" to match against and
quickly use to verify may be worthwhile.
The alc285_fixup_thinkpad_x1_gen7 routing was selected, amongst the
different options, as it should allow tuning the ratio between both
speaker set.
The routing was verified using `hda-verb`, and picking either 0x00 or
0x01. Either routin made the volume of the bass speakers controllable.
hda-verb /dev/snd/hwC1D0 0x17 SET_CONNECT_SEL 0x01
Signed-off-by: Samuel Dionne-Riel <samuel@xxxxxxxxxxxxxxx>
---
It may be worthwhile to clean-up behind and make the other fixups
re-routing `0x17` from `0x06` to either `0x02` or `0x03` also use the
same routing. It's a bit confusing, determining which routing to choose
when adding one for a device.
- alc289_fixup_asus_ga401
- alc295_fixup_disable_dac3
Might need to be checked (and re-used within a chain):
- alc287_fixup_yoga9_14iap7_bass_spk_pin
- alc245_fixup_hp_spectre_x360_eu0xxx
- alc245_fixup_hp_spectre_x360_16_aa0xxx
I might be missing some, if for example they are handled through pin
fixups, or other fixup mechanisms.
I don't have the experience needed to know for sure if the cleanup would
be appropriate. So please excuse the lack of follow-up on that.
Signed-off-by: Samuel Dionne-Riel <samuel@xxxxxxxxxxxxxxx>
---
sound/hda/codecs/realtek/alc269.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/sound/hda/codecs/realtek/alc269.c b/sound/hda/codecs/realtek/alc269.c
index cafa48b5aceb5..5d38e371a6836 100644
--- a/sound/hda/codecs/realtek/alc269.c
+++ b/sound/hda/codecs/realtek/alc269.c
@@ -3805,6 +3805,7 @@ enum {
ALC245_FIXUP_HP_TAS2781_I2C_MUTE_LED,
ALC288_FIXUP_SURFACE_SWAP_DACS,
ALC236_FIXUP_HP_MUTE_LED_MICMUTE_GPIO,
+ ALC245_FIXUP_BASS_HP_DAC,
};
/* A special fixup for Lenovo C940 and Yoga Duet 7;
@@ -6295,6 +6296,11 @@ static const struct hda_fixup alc269_fixups[] = {
.type = HDA_FIXUP_FUNC,
.v.func = alc288_fixup_surface_swap_dacs,
},
+ [ALC245_FIXUP_BASS_HP_DAC] = {
+ .type = HDA_FIXUP_FUNC,
+ /* Borrow the DAC routing selected for those Thinkpads */
+ .v.func = alc285_fixup_thinkpad_x1_gen7,
+ },
};
static const struct hda_quirk alc269_fixup_tbl[] = {
@@ -7558,6 +7564,7 @@ static const struct hda_model_fixup alc269_fixup_models[] = {
{.id = ALC285_FIXUP_HP_GPIO_AMP_INIT, .name = "alc285-hp-amp-init"},
{.id = ALC236_FIXUP_LENOVO_INV_DMIC, .name = "alc236-fixup-lenovo-inv-mic"},
{.id = ALC2XX_FIXUP_HEADSET_MIC, .name = "alc2xx-fixup-headset-mic"},
+ {.id = ALC245_FIXUP_BASS_HP_DAC, .name = "alc245-fixup-bass-hp-dac"},
{}
};
#define ALC225_STANDARD_PINS \
--
2.51.0