On Mon, Jan 10, 2011 at 07:13:04PM +1100, Triffid Hunter wrote: > I don't know how to navigate the kernel's git tree, but I have noticed > that the 1.6 version of the ftdi_sio driver included in kernel 2.6.35 > always asserts/deasserts the DTR line regardless of hup setting by > stty or similar. Older versions of the driver don't exhibit this > behaviour. I think we fixed this in the .37 kernel release. It should have been fixed with the commit id: commit 677aeafe19e88c282af74564048243ccabb1c590 Author: Johan Hovold <jhovold@xxxxxxxxx> Date: Sun Sep 12 16:31:45 2010 +0200 USB: ftdi_sio: revert "USB: ftdi_sio: fix DTR/RTS line modes" Can you try 2.6.37 and let us know if it is resolved or not? thanks, greg k-h -- 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