Without rebooting I disconnected the external USB device, unloaded the USB modules then loaded ehci_hcd first:
sudo modprobe -r uhci_hcd sudo modprobe -r ohci_hcd sudo modprobe ehci_hcd sudo modprobe uhci_hcd sudo modprobe ohci_hcd readlink /sys/block/sdb ../devices/pci0000:00/0000:00:1d.7/usb1/1-3/1-3:1.0/host8/target8:0:0/8:0:0:0/block/sdb Now rinse and repeat with a different load order: sudo modprobe -r ohci_hcd sudo modprobe -r uhci_hcd sudo modprobe -r ehci_hcd sudo modprobe uhci_hcd sudo modprobe ohci_hcd sudo modprobe ehci_hcd readlink /sys/block/sdb ../devices/pci0000:00/0000:00:1d.7/usb5/5-3/5-3:1.0/host12/target12:0:0/12:0:0:0/block/sdb -- warning: ehci_hcd loaded AFTER uhci_hcd and ohci_hcd https://bugs.launchpad.net/bugs/296710 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs