Hello all, I am running Ubuntu 12.4 x64 on an Lenovo W520 and having an issue with serial USB adapter I use mini-com and putty primarily....so I followed the instructions to permanently attach the device as ttyUSB0 and the problem is it is not consistently working. Sometimes it works, sometimes not. It never complains it cannot get the port, just when I connect to a router/switch I get no output. I can usually get it to work if I unplug and change the port, or restart the switch/router. I have tried multiple adapters as well, same issue. I don't think this is a hardware/mobo issue because I triple boot this and it works fine in windows and Ubuntu 11.10 no matter what usb port i plug into. This OS is on an SSD, the others are on a 2.5 10000rpm HDD.

Thank you all in advance for any help...

Jason