On Sat, 14 Mar 2015, Louis Sautier wrote: > > Those kernel log messages indicate that your USB controller has a > > hardware problem. Like the message says, the controller has stopped > > working. When you unbind the controller and rebind it, that performs a > > reset and the controller starts working again. > > > > If you want, you could avoid using the bad controller by getting a > > USB-2.0 hub and plugging the UPS into it. > > > > Alan Stern > > > > So this is definitely a hardware problem? I updated my motherboard BIOS > just to be sure. I'm pretty sure it's a hardware problem. > Would using some ports from another controller (maybe USB2/USB3 ones) > change anything? Yes, it would. That's why I suggested you get a hub. Getting a PCI card with a USB controller would also work. 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