dmesg| tail -20
[   19.129457] cfg80211:     (5735000 KHz - 5835000 KHz @ 20000 KHz), (N/A, 3000 mBm)
[   29.888017] eth2: no IPv6 routers present
[  145.055906] usb 2-5: USB disconnect, device number 3
[  149.208110] usb 2-2: new high-speed USB device number 4 using ehci_hcd
[  160.202895] usb 2-2: USB disconnect, device number 4
[  162.152094] usb 2-1: new high-speed USB device number 5 using ehci_hcd
[  434.064292] usb 2-1: USB disconnect, device number 5
[  435.700105] usb 2-1: new high-speed USB device number 6 using ehci_hcd
[  444.820557] usb 2-1: USB disconnect, device number 6
[  445.092124] usb 2-1: new high-speed USB device number 7 using ehci_hcd
[  447.185118] usb 2-1: USB disconnect, device number 7
[  450.248064] usb 2-2: new high-speed USB device number 8 using ehci_hcd
[  580.966003] usb 2-2: USB disconnect, device number 8
[  581.236122] usb 2-2: new high-speed USB device number 9 using ehci_hcd
[  620.077430] usb 2-2: USB disconnect, device number 9
[  620.380107] usb 2-2: new high-speed USB device number 10 using ehci_hcd
[  622.397321] usb 2-2: USB disconnect, device number 10
[  624.260041] usb 2-1: new high-speed USB device number 11 using ehci_hcd
[  978.643657] usb 2-1: USB disconnect, device number 11
[  980.660075] usb 2-1: new high-speed USB device number 12 using ehci_hcd