I am also able to reproduce this USB disconnect glitch on a Dell Xeon workstation. Is there any way I can get more verbose output to dmesg: On Sat, Jun 25, 2016 at 12:29:39PM +0000, bugzilla-daemon@xxxxxxxxxxxxxxxxxxx wrote: > https://bugzilla.kernel.org/show_bug.cgi?id=120981 > > Bug ID: 120981 > Summary: 4.6.x VIA VL805 USB 3.0 controller resets device > making it unusable until re-plugged > Product: Drivers > Version: 2.5 > Kernel Version: 4.6.x Reproduced on 4.6.2, will try on 4.6.4. Any suggestions on how to gather additional logging info would be appreciated. -- 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