root@server:~# dmesg | grep ehci_hcd

[430198.138527] usb 2-1.6: reset full-speed USB device number 7 using ehci_hcd
[430198.350402] usb 2-1.6: reset full-speed USB device number 7 using ehci_hcd
[430405.754179] usb 2-1.5: reset full-speed USB device number 6 using ehci_hcd
[430405.998040] usb 2-1.5: reset full-speed USB device number 6 using ehci_hcd
[435698.474892] usb 1-1.2: new full-speed USB device number 4 using ehci_hcd
[539171.561725] usb 2-1.6: reset full-speed USB device number 7 using ehci_hcd
[539171.817551] usb 2-1.6: reset full-speed USB device number 7 using ehci_hcd
[539385.857454] usb 2-1.6: reset full-speed USB device number 7 using ehci_hcd
[539386.049345] usb 2-1.6: reset full-speed USB device number 7 using ehci_hcd
[539735.270972] usb 2-1.6: reset full-speed USB device number 7 using ehci_hcd
[539735.534821] usb 2-1.6: reset full-speed USB device number 7 using ehci_hcd
[592321.568503] usb 1-1.2: new high-speed USB device number 5 using ehci_hcd
[592321.667914] ehci_hcd 0000:00:1a.0: fatal error
[592321.671788] ehci_hcd 0000:00:1a.0: HC died; cleaning up
[592321.673853] ehci_hcd 0000:00:1a.0: force halt; handshake ffffc90000c7c024 00004000 00004000 -> -110
[592321.673854] ehci_hcd 0000:00:1a.0: HC died; cleaning up
root@server:~#