Another possible source of the error might be that ohci (usb 1 support) is loaded before ehci (usb 2.0 support): https://bugs.launchpad.net/ubuntu/+source/udev/+bug/296710 In my dmesg log at least the ohci comes before ehci...
-- ehci_hcd module causes I/O errors in USB 2.0 devices https://bugs.launchpad.net/bugs/88746 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
