ERROR unknown event type 15 / HC died

sebastian-brandt

My via docking station connected USB devices get disconnected. This occurs if Android Studio (installed from 3rd party repo) runs for some minutes. I have to unplug+replug my docking station to get those devices up again. Solus on 5.6.18-156.current kernel.

dmesg says:

[261019.984421] xhci_hcd 0000:3e:00.0: ERROR unknown event type 15
[261025.289266] xhci_hcd 0000:3e:00.0: xHCI host not responding to stop endpoint command.
[261025.289308] xhci_hcd 0000:3e:00.0: xHCI host controller not responding, assume dead
[261025.289332] xhci_hcd 0000:3e:00.0: HC died; cleaning up
[261025.289390] usb 3-1: USB disconnect, device number 2
[261025.289394] usb 3-1.2: USB disconnect, device number 4
[261025.289490] usb 4-1: USB disconnect, device number 2
[261025.289495] usb 4-1.3: USB disconnect, device number 3
[261025.307805] usb 3-1.3: USB disconnect, device number 5
[261025.307811] usb 3-1.3.2: USB disconnect, device number 7
[261025.367604] usb 3-1.3.4: USB disconnect, device number 8
[261025.397729] usb 3-2: USB disconnect, device number 3

Does anyone have an idea how this could be fixed?

sebastian-brandt

I could resolve this issue by disabling power management for the VIA USB hub components in my Thunderbolt3 docking station using the powertop utility from the Solus repo.