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npreining

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Registered: 2023-03-06

Posts: 30

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Lenovo Thunderbolt 4 Dock - audio device not working

Hi all,

I have a Lenovo Thunderbolt 4 Dock, and up to recently (but I cannot really fix a date, but 2 weeks ago it was working) the dock provided an audio interface. I have plugged in some loudspeakers but rarly use them since I use a USB connected DAC more often.

The other day I wanted to play music via the speakers, but the audio interface is gone. All other functionality (USB, external display, ...) work without a problem.

I checked Windows, and the audio interface is working there, too.

In the meantime, there was a firmware update to the doc, and it seemingly got installed but did change something on the dock.

I now see a device that I think I haven't seen before (the Fresco...)

[ 2173.091961] usb 1-1: New USB device found, idVendor=17ef, idProduct=30ba, bcdDevice= 1.01
[ 2173.091968] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 2173.091969] usb 1-1: Product: V1003
[ 2173.091971] usb 1-1: Manufacturer: Fresco Logic, Inc.

The USB devices listed

Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 27c6:6594 Shenzhen Goodix Technology Co.,Ltd. Goodix USB2.0 MISC
Bus 001 Device 003: ID 30c9:00ad Luxvisions Innotech Limited Integrated Camera
Bus 001 Device 004: ID 8087:0033 Intel Corp. AX211 Bluetooth
Bus 001 Device 022: ID 17ef:30ba Lenovo V1003
Bus 001 Device 023: ID 17ef:30b4 Lenovo ThinkPad Thunderbolt 4 Dock MCU Contoller
Bus 001 Device 024: ID 17ef:30b5 Lenovo 40B0
Bus 001 Device 025: ID 17ef:30b7 Lenovo USB2.0 Hub             
Bus 001 Device 026: ID 17ef:30b9 Lenovo USB2.0 Hub             
Bus 001 Device 027: ID 3434:08a0 Keychron Keychron Q10 Max
Bus 001 Device 028: ID 1050:0407 Yubico.com Yubikey 4/5 OTP+U2F+CCID
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub

and the PCI devices above the builtin stuff

20:00.0 PCI bridge: Intel Corporation Thunderbolt 4 Bridge [Maple Ridge 4C 2020] (rev 02)
21:00.0 PCI bridge: Intel Corporation Thunderbolt 4 Bridge [Maple Ridge 4C 2020] (rev 02)
21:01.0 PCI bridge: Intel Corporation Thunderbolt 4 Bridge [Maple Ridge 4C 2020] (rev 02)
21:02.0 PCI bridge: Intel Corporation Thunderbolt 4 Bridge [Maple Ridge 4C 2020] (rev 02)
21:03.0 PCI bridge: Intel Corporation Thunderbolt 4 Bridge [Maple Ridge 4C 2020] (rev 02)
22:00.0 USB controller: Intel Corporation Thunderbolt 4 NHI [Maple Ridge 4C 2020]
23:00.0 PCI bridge: Intel Corporation Thunderbolt 4 Bridge [Goshen Ridge 2020] (rev 03)
24:00.0 PCI bridge: Intel Corporation Thunderbolt 4 Bridge [Goshen Ridge 2020] (rev 03)
24:01.0 PCI bridge: Intel Corporation Thunderbolt 4 Bridge [Goshen Ridge 2020] (rev 03)
24:02.0 PCI bridge: Intel Corporation Thunderbolt 4 Bridge [Goshen Ridge 2020] (rev 03)
24:03.0 PCI bridge: Intel Corporation Thunderbolt 4 Bridge [Goshen Ridge 2020] (rev 03)
24:04.0 PCI bridge: Intel Corporation Thunderbolt 4 Bridge [Goshen Ridge 2020] (rev 03)
47:00.0 Ethernet controller: Intel Corporation Ethernet Controller (2) I225-LMvP (rev 03)
48:00.0 USB controller: Intel Corporation Thunderbolt 4 USB Controller [Maple Ridge 4C 2020]

The dock is authorized according to boltctl list. aplay -l does not list anything related to the dock.

The dmesg output when plugging in:

[ 2172.947610] pcieport 0000:24:04.0: enabling device (0000 -> 0002)
[ 2172.948224] igc 0000:47:00.0: enabling device (0000 -> 0002)
[ 2172.948385] igc 0000:47:00.0: PTM enabled, 4ns granularity
[ 2172.966556] usb 1-1: new high-speed USB device number 22 using xhci_hcd
[ 2173.016970] igc 0000:47:00.0 (unnamed net_device) (uninitialized): PHC added
[ 2173.043019] igc 0000:47:00.0: 4.000 Gb/s available PCIe bandwidth (5.0 GT/s PCIe x1 link)
[ 2173.043027] igc 0000:47:00.0 eth0: MAC: 08:3a:88:b7:09:b4
[ 2173.051717] igc 0000:47:00.0 enp71s0: renamed from eth0
[ 2173.091961] usb 1-1: New USB device found, idVendor=17ef, idProduct=30ba, bcdDevice= 1.01
[ 2173.091968] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 2173.091969] usb 1-1: Product: V1003
[ 2173.091971] usb 1-1: Manufacturer: Fresco Logic, Inc.
[ 2173.092949] hub 1-1:1.0: USB hub found
[ 2173.092974] hub 1-1:1.0: 5 ports detected
[ 2173.224090] thunderbolt 0-1: new device found, vendor=0x108 device=0x2031
[ 2173.224101] thunderbolt 0-1: Lenovo ThinkPad Thunderbolt 4 Dock
[ 2173.627638] usb 1-1.1: new full-speed USB device number 23 using xhci_hcd
[ 2173.714220] usb 1-1.1: New USB device found, idVendor=17ef, idProduct=30b4, bcdDevice= 1.00
[ 2173.714246] usb 1-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 2173.714249] usb 1-1.1: Product: ThinkPad Thunderbolt 4 Dock MCU Contoller
[ 2173.714252] usb 1-1.1: Manufacturer: Lenovo
[ 2173.714254] usb 1-1.1: SerialNumber: 0123456789ABCDEF
[ 2173.720445] hid-generic 0003:17EF:30B4.000C: hiddev96,hidraw2: USB HID v1.11 Device [Lenovo ThinkPad Thunderbolt 4 Dock MCU Contoller] on usb-0000:00:14.0-1.1/input0
[ 2173.794542] usb 1-1.2: new full-speed USB device number 24 using xhci_hcd
[ 2173.927095] usb 1-1.2: New USB device found, idVendor=17ef, idProduct=30b5, bcdDevice=10.19
[ 2173.927121] usb 1-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 2173.927124] usb 1-1.2: Product: 40B0
[ 2173.927127] usb 1-1.2: Manufacturer: Lenovo
[ 2173.927129] usb 1-1.2: SerialNumber: 1S40B0ZDZ0155X
[ 2174.008562] usb 1-1.4: new high-speed USB device number 25 using xhci_hcd
[ 2174.101032] usb 1-1.4: New USB device found, idVendor=17ef, idProduct=30b7, bcdDevice=55.64
[ 2174.101042] usb 1-1.4: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 2174.101046] usb 1-1.4: Product: USB2.0 Hub             
[ 2174.101048] usb 1-1.4: Manufacturer: VIA Labs, Inc.         
[ 2174.101049] usb 1-1.4: SerialNumber: 000000001
[ 2174.103172] hub 1-1.4:1.0: USB hub found
[ 2174.103380] hub 1-1.4:1.0: 4 ports detected
[ 2174.809480] usb 1-1.4.4: new high-speed USB device number 26 using xhci_hcd
[ 2174.947507] usb 1-1.4.4: New USB device found, idVendor=17ef, idProduct=30b9, bcdDevice=55.63
[ 2174.947516] usb 1-1.4.4: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 2174.947519] usb 1-1.4.4: Product: USB2.0 Hub             
[ 2174.947521] usb 1-1.4.4: Manufacturer: VIA Labs, Inc.         
[ 2174.947523] usb 1-1.4.4: SerialNumber: 000000001
[ 2174.948668] hub 1-1.4.4:1.0: USB hub found
[ 2174.949031] hub 1-1.4.4:1.0: 4 ports detected

I am a bit stymed how to debug that further.

Thanks for any ideas.