The Pi / Hub / Power Saga – Running with Scissors..
Another option I just tried turned nasty very quickly… I wondered what would happen if all external USB devices were connected via the (powered) hub, but the answer was soon apparent:
usb 1-1.3.1.1: reset low speed USB device number 6 using dwc_otgusb 1-1.3.1.2: reset full speed USB device number 7 using dwc_otg
INFO:: periodic_channel_available: Total channels: 8, Periodic: 7, Non-periodic: 1
INFO:: schedule_periodic: No host channel available for periodic transfer.
ERROR::dwc_otg_hcd_urb_enqueue:487: DWC OTG HCD URB Enqueue failed adding QTD. Error status -4008
INFO:: periodic_channel_available: Total channels: 8, Periodic: 7, Non-periodic: 1
INFO:: schedule_periodic: No host channel available for periodic transfer.
ERROR::dwc_otg_hcd_urb_enqueue:487: DWC OTG HCD URB Enqueue failed adding QTD. Error status -4008
INFO:: periodic_channel_available: Total channels: 8, Periodic: 7, Non-periodic: 1
INFO:: schedule_periodic: No host channel available for periodic transfer.
ERROR::dwc_otg_hcd_urb_enqueue:487: DWC OTG HCD URB Enqueue failed adding QTD. Error status -4008
INFO:: periodic_channel_available: Total channels: 8, Periodic: 7, Non-periodic: 1
INFO:: schedule_periodic: No host channel available for periodic transfer.
ERROR::dwc_otg_hcd_urb_enqueue:487: DWC OTG HCD URB Enqueue failed adding QTD. Error status -4008
– repeated ad nauseam…
Well, at least I have now seen some new and different Linux error messages!
Another rather worrying observation was that the red led stayed on when the Pi ‘power’ was disconnected while the (powered) USB hub was still connected..
I think I’ll leave all this for the time being, and check the Pi Forum for any practical suggestions…
you mean by powered hub, that the hub has an external power connected to it?