Tries booting with the chain disconnected from the dock, and as expected
- the system boots correctly with the dock attached and built-in USB
devices present, after which plugging the USB cable in works well.
The problem seems to only be when external USB devices are connected to
the dock.
Here's how the dock's USB controller tree looks after everything is
plugged in:
----8<----
/: Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/2p, 480M
ID 1d6b:0002 Linux Foundation 2.0 root hub
|__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/7p, 480M
ID 0424:2807 Standard Microsystems Corp. Hub
|__ Port 3: Dev 4, If 0, Class=Hub, Driver=hub/5p, 480M
ID 0424:2734 Standard Microsystems Corp.
|__ Port 4: Dev 7, If 2, Class=Audio, Driver=snd-usb-audio, 480M
ID 03f0:a707 HP, Inc
|__ Port 4: Dev 7, If 0, Class=Video, Driver=uvcvideo, 480M
ID 03f0:a707 HP, Inc
|__ Port 4: Dev 7, If 3, Class=Audio, Driver=snd-usb-audio, 480M
ID 03f0:a707 HP, Inc
|__ Port 4: Dev 7, If 1, Class=Video, Driver=uvcvideo, 480M
ID 03f0:a707 HP, Inc
|__ Port 2: Dev 6, If 0, Class=Hub, Driver=hub/4p, 480M
ID 05e3:0608 Genesys Logic, Inc. Hub
|__ Port 4: Dev 8, If 1, Class=Human Interface Device,
Driver=usbhid, 1.5M
ID 04d9:2013 Holtek Semiconductor, Inc. Keyboard [Das
Keyboard]
|__ Port 4: Dev 8, If 0, Class=Human Interface Device,
Driver=usbhid, 1.5M
ID 04d9:2013 Holtek Semiconductor, Inc. Keyboard [Das
Keyboard]
|__ Port 5: Dev 10, If 0, Class=Human Interface Device,
Driver=usbhid, 480M
ID 0424:274c Standard Microsystems Corp.
|__ Port 1: Dev 5, If 0, Class=Hub, Driver=hub/5p, 480M
ID 0424:2734 Standard Microsystems Corp.
|__ Port 4: Dev 9, If 2, Class=Human Interface Device,
Driver=usbhid, 12M
ID 046d:c52b Logitech, Inc. Unifying Receiver
|__ Port 4: Dev 9, If 0, Class=Human Interface Device,
Driver=usbhid, 12M
ID 046d:c52b Logitech, Inc. Unifying Receiver
|__ Port 4: Dev 9, If 1, Class=Human Interface Device,
Driver=usbhid, 12M
ID 046d:c52b Logitech, Inc. Unifying Receiver
|__ Port 5: Dev 11, If 0, Class=Human Interface Device,
Driver=usbhid, 480M
ID 0424:274c Standard Microsystems Corp.
|__ Port 5: Dev 3, If 0, Class=Audio, Driver=snd-usb-audio, 480M
ID 0bda:4014 Realtek Semiconductor Corp.
|__ Port 5: Dev 3, If 1, Class=Audio, Driver=snd-usb-audio, 480M
ID 0bda:4014 Realtek Semiconductor Corp.
|__ Port 5: Dev 3, If 2, Class=Audio, Driver=snd-usb-audio, 480M
ID 0bda:4014 Realtek Semiconductor Corp.
|__ Port 5: Dev 3, If 3, Class=Audio, Driver=snd-usb-audio, 480M
ID 0bda:4014 Realtek Semiconductor Corp.
----8<----
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https://bugs.launchpad.net/bugs/1856161
Title:
Thunderbolt dock fails to connect USB devices
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