root@harold-dev:/var/log# cat kern.log  | grep "Sep 18 20:57:52" -B5 -A10
Sep 18 20:57:48 harold-dev kernel: [    6.479785] Bluetooth: L2CAP socket layer initialized
Sep 18 20:57:48 harold-dev kernel: [    6.479787] Bluetooth: SCO socket layer initialized
Sep 18 20:57:48 harold-dev kernel: [    6.482555] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
Sep 18 20:57:48 harold-dev kernel: [    6.482557] Bluetooth: BNEP filters: protocol multicast
Sep 18 20:57:48 harold-dev kernel: [    6.482560] Bluetooth: BNEP socket layer initialized
Sep 18 20:57:52 harold-dev kernel: [   11.126989] usb 1-3: device descriptor read/all, error -110
Sep 18 20:57:53 harold-dev kernel: [   11.238887] usb 1-3: new high-speed USB device number 3 using xhci_hcd
Sep 18 20:58:03 harold-dev kernel: [   21.366934] usb 1-3: device descriptor read/all, error -110
Sep 18 20:58:03 harold-dev kernel: [   21.478874] usb 1-3: new high-speed USB device number 4 using xhci_hcd
Sep 18 20:58:08 harold-dev kernel: [   26.494910] usb 1-3: device descriptor read/8, error -110
Sep 18 20:58:13 harold-dev kernel: [   31.614941] usb 1-3: device descriptor read/8, error -110
Sep 18 20:58:13 harold-dev kernel: [   31.830863] usb 1-3: new high-speed USB device number 5 using xhci_hcd
Sep 18 22:58:19 harold-dev kernel: [   36.846923] usb 1-3: device descriptor read/8, error -110
Sep 18 22:58:24 harold-dev kernel: [   41.966894] usb 1-3: device descriptor read/8, error -110
Sep 18 22:58:24 harold-dev kernel: [   42.070863] usb usb1-port3: unable to enumerate USB device
Sep 18 23:00:24 harold-dev kernel: [    0.000000] Initializing cgroup subsys cpuset