I see the same problem with a hub plugged in and nothing attached to it. This happens repeatedly. I've reported it to them as well, but it seems to be more of a problem with the xhci_hcd. This is with 3.19.0-30.
[ 3323.263466] usb 2-1.1: USB disconnect, device number 103 [ 3323.284305] usb 2-1.4: USB disconnect, device number 104 [ 3323.398767] usb 2-1: reset SuperSpeed USB device number 2 using xhci_hcd [ 3323.416724] xhci_hcd 0000:04:00.0: xHCI xhci_drop_endpoint called with disabled ep ffff8804288644e0 [ 3323.697914] usb 2-1.1: new SuperSpeed USB device number 105 using xhci_hcd [ 3323.713630] usb 2-1.1: New USB device found, idVendor=05e3, idProduct=0612 [ 3323.713633] usb 2-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 3323.713635] usb 2-1.1: Product: USB3.0 Hub [ 3323.713636] usb 2-1.1: Manufacturer: SKIVA TECHNOLOGIES INC [ 3323.713638] usb 2-1.1: SerialNumber: t2 [ 3323.715331] hub 2-1.1:1.0: USB hub found [ 3323.715596] hub 2-1.1:1.0: 4 ports detected [ 3323.789786] usb 2-1.4: new SuperSpeed USB device number 106 using xhci_hcd [ 3323.805724] usb 2-1.4: New USB device found, idVendor=05e3, idProduct=0612 [ 3323.805727] usb 2-1.4: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 3323.805729] usb 2-1.4: Product: USB3.0 Hub [ 3323.805731] usb 2-1.4: Manufacturer: SKIVA TECHNOLOGIES INC [ 3323.805732] usb 2-1.4: SerialNumber: t3 [ 3323.807841] hub 2-1.4:1.0: USB hub found [ 3323.808171] hub 2-1.4:1.0: 4 ports detected -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1371233 Title: USB 3.0 connection is unreliable + xHCI xhci_drop_endpoint called with disabled ep To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1371233/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
