> [ 0.000000] xhci_dbc:early_xdbc_parse_parameter: dbgp_num: 0 > [ 4.984106] xhci_dbc:xdbc_start: waiting for connection timed out, DCPORTSC:0xa0 > [ 9.946159] xhci_dbc:xdbc_start: waiting for connection timed out, DCPORTSC:0xa0 > [ 9.946163] xhci_dbc:early_xdbc_setup_hardware: failed to setup the connection to host > > [ 12.818364] xhci_hcd 0000:00:0d.0: xHCI Host Controller > [ 12.818373] xhci_hcd 0000:00:0d.0: new USB bus registered, assigned bus number 1 > [ 12.820360] xhci_hcd 0000:00:0d.0: xHCI Host Controller > [ 12.820363] xhci_hcd 0000:00:0d.0: new USB bus registered, assigned bus number 2 > [ 12.821036] xhci_hcd 0000:00:14.0: xHCI Host Controller > [ 12.821040] xhci_hcd 0000:00:14.0: new USB bus registered, assigned bus number 3 > [ 12.823451] xhci_hcd 0000:00:14.0: xHCI Host Controller > [ 12.823453] xhci_hcd 0000:00:14.0: new USB bus registered, assigned bus number 4 > [ 17.115089] usb usb4-port4: Cannot enable. Maybe the USB cable is bad? > [ 17.115163] usb usb4-port4: config error Ok, I see it now. Your setup has two xhci controllers, earlypringk=dbc enables dbc on the first xhci it finds, which would be at 0000:00:0d.0. Your cable is connected to the second xhci host at 0000:00:14.0 does using "earlyprintk=xdbc1" work? Thanks -Mathias
