On Mon, 8 Jun 2015, Oliver Neukum wrote: > On Sun, 2015-06-07 at 12:13 +0000, James wrote: > > > [ 142.892218] EXT4-fs (sde1): mounted filesystem with ordered data > > mode. > > Opts: (null)] > > > > cp to drive > > drop is next > > > > [ 234.054404] usb 3-1: reset SuperSpeed USB device number 2 using > > xhci_hcd > > [ 234.357368] usb 3-1: reset SuperSpeed USB device number 2 using > > xhci_hcd > > A lot of resets with no reason. You need to enable debugging > for the storage driver. A usbmon trace would be easier to read and just as good for debugging. Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html