[PATCH v3 2/2] ALSA: usb-audio: Add quirk flag for Sennheiser MOMENTUM 3
From: Rong Zhang
Date: Thu May 28 2026 - 14:47:25 EST
The Sennheiser MOMENTUM 3 is a wireless around-ear headphones featuring
ANC, which can be connected via Bluetooth or USB-C.
When connecting via USB-C, its UAC mixer works fine and precisely
corresponds to the reported dB range. However, the mixer's volume
GET_CUR method is somehow stubbed and returns a constant value (15dB).
Since commit 86aa1ea1f15c ("ALSA: usb-audio: Do not expose sticky
mixers"), the sticky check considers the mixer to be sticky and
unnecessarily disables the mixer.
Add a quirk table entry matching VID/PID=0x1377/0x6004 and applying
the MIXER_GET_CUR_BROKEN quirk flag, so that the mixer is usable again.
Quirky device sample:
usb 7-1.4.4.1.1.1: new full-speed USB device number 30 using xhci_hcd
usb 7-1.4.4.1.1.1: New USB device found, idVendor=1377, idProduct=6004, bcdDevice=38.85
usb 7-1.4.4.1.1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 7-1.4.4.1.1.1: Product: MOMENTUM 3
usb 7-1.4.4.1.1.1: Manufacturer: Sennheiser electronic GmbH & Co. KG
usb 7-1.4.4.1.1.1: SerialNumber: <REDACTED>
usb 7-1.4.4.1.1.1: Found last interface = 0
usb 7-1.4.4.1.1.1: 1:1: add audio endpoint 0x3
usb 7-1.4.4.1.1.1: Creating new data endpoint #3
usb 7-1.4.4.1.1.1: 1:1 Set sample rate 48000, clock 0
usb 7-1.4.4.1.1.1: 6:0: sticky mixer values (0/11520/768 => 3840), disabling
usb 7-1.4.4.1.1.1: [6] FU [PCM Playback Volume] skipped due to invalid volume
input: Sennheiser electronic GmbH & Co. KG MOMENTUM 3 as /devices/pci0000:00/0000:00:08.3/0000:67:00.4/usb7/7-1/7-1.4/7-1.4.4/7-1.4.4.1/7-1.4.4.1.1/7-1.4.4.1.1.1/7-1.4.4.1.1.1:1.2/0003:1377:6004.002B/input/input208
input: Sennheiser electronic GmbH & Co. KG MOMENTUM 3 Consumer Control as /devices/pci0000:00/0000:00:08.3/0000:67:00.4/usb7/7-1/7-1.4/7-1.4.4/7-1.4.4.1/7-1.4.4.1.1/7-1.4.4.1.1.1/7-1.4.4.1.1.1:1.2/0003:1377:6004.002B/input/input209
hid-generic 0003:1377:6004.002B: input,hiddev99,hidraw12: USB HID v1.11 Device [Sennheiser electronic GmbH & Co. KG MOMENTUM 3] on usb-0000:67:00.4-1.4.4.1.1.1/input2
Signed-off-by: Rong Zhang <i@xxxxxxxx>
---
sound/usb/quirks.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
index ac2f0f6039be..149f2009df12 100644
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -2357,6 +2357,8 @@ static const struct usb_audio_quirk_flags_table quirk_flags_table[] = {
QUIRK_FLAG_FORCE_IFACE_RESET | QUIRK_FLAG_IFACE_DELAY),
DEVICE_FLG(0x1224, 0x2a25, /* Jieli Technology USB PHY 2.0 */
QUIRK_FLAG_GET_SAMPLE_RATE | QUIRK_FLAG_MIC_RES_16),
+ DEVICE_FLG(0x1377, 0x6004, /* Sennheiser MOMENTUM 3 */
+ QUIRK_FLAG_MIXER_GET_CUR_BROKEN),
DEVICE_FLG(0x1395, 0x740a, /* Sennheiser DECT */
QUIRK_FLAG_GET_SAMPLE_RATE),
DEVICE_FLG(0x1397, 0x0507, /* Behringer UMC202HD */
--
2.53.0