On Monday, November 04, 2013 4:22:04 PM Alan Stern wrote: > On Mon, 4 Nov 2013, Luke-Jr wrote: > > Perhaps I phrased that wrong: I suspect this is a hardware issue or > > firmware bug, triggering bad error handling in Linux. After upgrading to > > 3.12, Linux indeed survives the hub being plugged in, and the hub is > > usable, but I still see various errors in dmesg. > > What errors? [33454.079555] usb 2-1: Parent hub missing LPM exit latency info. Power management will be impacted. [33454.080514] xhci_hcd 0000:03:00.0: xHCI xhci_drop_endpoint called with disabled ep ffff88006e5cfd80 [33436.081842] hub 2-1:1.0: USB hub found [33436.082326] hub 2-1:1.0: 4 ports detected [33436.284763] hub 2-1:1.0: hub_port_status failed (err = -71) [33436.285139] xhci_hcd 0000:03:00.0: URB transfer length is wrong, xHC issue? req. len = 4, act. len = 4294967292 [33436.285156] hub 2-1:1.0: hub_port_status failed (err = 0) [33436.285399] hub 2-1:1.0: hub_port_status failed (err = -71) [33436.285629] hub 2-1:1.0: hub_port_status failed (err = -71) -- 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