USB error -110 in dmesg log
USB error -110: USB power exceeded
If you see USB error -110 in a dmesg log (or in /var/log/syslog, /var/log/kern.og, etc.) probably means that the USB port or USB hub was unable to supply enough power to the device so it was shut down. This may also shut down the entire hub that the device is connected to. This can happen even if the hub has its own external power. This can be confusing because even though the USB host may shut down the hub, the hub's power light may remain lit.
You may see log messages that resemble one or more of the following:
device not accepting address NN, error -110 device descriptor read/64, error -110 unable to enumerate USB device on port N