Hardware: Razer Blade 15 2018 Base, HP G5 USB-C dock Kernel: all tested including 6.8.0-rc7 The HP G5 dock uses Alt Mode for external monitors. Booting the kernel with dock connected and then unplugging and replugging the dock results in the monitors and USB3 devices no longer being detected (some USB2 devices are still detected). By not detected, I mean that the kernel log does not show anything at all when the device is plugged into the USB-C port. This is not a problem with the dock - a USB-C NVME drive was plugged in and also not detected, and neither was the dock after being power cycled. I have narrowed this problem down to the usb3 and usb4 bus devices being automatically suspended after the dock is unplugged: /sys/bus/usb/devices# cat usb[34]/power/runtime_status suspended suspended /sys/bus/usb/devices# cat usb[34]/power/control auto auto If I plug the dock (or NVME drive) in and then force either of these bus devices on (echo on > usb3/power/control), then the port wakes up, and the dock and displays plugged into it are detected. This problem seems to be related to the external monitors connected to the dock - with a single display connected, it happens rarely, but with two displays it happens every time the dock is unplugged. If the kernel is booted with "usbcore.autosuspend=-1" then the problem never occurs.
