Есть ноутбук с Xubuntu 14.04 и монитор с USB 3.0 хабом. Проблема в том что переодически хаб не цепляется и в dmesg сыпятся
[ 1181.082555] usb 6-2: new high-speed USB device number 45 using xhci_hcd
[ 1181.082816] usb 6-2: Device not responding to set address.
[ 1181.286585] usb 6-2: Device not responding to set address.
[ 1181.490483] usb 6-2: device not accepting address 45, error -71
[ 1181.490801] hub 6-0:1.0: unable to enumerate USB device on port 2
[ 1257.328806] usb 7-2: USB disconnect, device number 2