Oliver Neukum <oneukum@...> writes: > > In my case, my scanner problem has been fixed (so far) by tuning off > > autosuspend: > > > > # echo -1 >/sys/module/usbcore/parameters/autosuspend > > Did you see any other device failing or is it specific > to your scanner? Unfortunately, I cannot report the same success when turning off autosuspend. It doesn't have any effect, all USB 3.0 ports on my system are unusable. Different example is a RS232 converter which works perfectly fine on all USB 2.0 ports. But when I plug it in (4.3.3 kernel): [ 695.336068] usb 1-2: new full-speed USB device number 6 using xhci_hcd [ 695.464663] usb 1-2: New USB device found, idVendor=067b, idProduct=2303 [ 695.464669] usb 1-2: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [ 695.464672] usb 1-2: Product: USB-Serial Controller [ 695.464674] usb 1-2: Manufacturer: Prolific Technology Inc. [ 695.492553] usbcore: registered new interface driver pl2303 [ 695.492575] usbserial: USB Serial support registered for pl2303 [ 695.492603] pl2303 1-2:1.0: pl2303 converter detected [ 695.493256] usb 1-2: pl2303 converter now attached to ttyUSB1 It looks fine at first, until I use it (open the device): [ 705.583710] pl2303 ttyUSB1: pl2303_get_line_request - failed: -32 [ 708.462557] pl2303 ttyUSB1: error sending break = -32 [ 712.480430] pl2303 ttyUSB1: pl2303_get_line_request - failed: -32 [ 716.803140] pl2303 ttyUSB1: error sending break = -32 So there seems to be something very wrong, what additional information can I provide? Has nobody else seen this issue before? Best regards, Johannes -- 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
