[93896.567447] usb 2-1.6: new high-speed USB device number 13 using ehci-pci
[93896.651477] usb 2-1.6: device descriptor read/64, error -71
[93896.839541] usb 2-1.6: device descriptor read/64, error -71
[93897.015611] usb 2-1.6: new high-speed USB device number 14 using ehci-pci
[93897.099633] usb 2-1.6: device descriptor read/64, error -71
[93897.287721] usb 2-1.6: device descriptor read/64, error -71
[93897.463796] usb 2-1.6: new high-speed USB device number 15 using ehci-pci
[93897.875885] usb 2-1.6: device not accepting address 15, error -71
[93897.947985] usb 2-1.6: new high-speed USB device number 16 using ehci-pci
[93898.364073] usb 2-1.6: device not accepting address 16, error -71
[93898.364300] hub 2-1:1.0: unable to enumerate USB device on port 6