Thank Alexander Batischev! I add the line to /etc/modprobe.d/blacklist Now it works! On Wed, Jun 9, 2010 at 1:31 AM, Alexander Batischev <eual.jp@gmail.com> wrote: > On Wed, Jun 09, 2010 at 11:56:08AM +0800, Long Wind wrote: > > I can suggest following command: > > # echo 'blacklist usbserial' >> /etc/modprobe.d/blacklist > > -- > Regards, > Alexander Batischev >