Fedora 12 problem with USB serial device

[Alan Cox]

On Sun, 07 Feb 2010 21:36:44 -0500
CAS <radio4pm at covad.net> wrote:

> I am using an FTDI232RL usb-to-serial converter for a serial port on 
> my laptop running Fedora 12.  For some reason, this is recognized, 
> but I am unable to communicate with the device.  When I plug in the 
> device on my desktop running Fedora 9 it works fine (I do need to add 
> myself to a different group to have access to the usb port however 
> (uucp vs dialout).  Here are the responses to the various commands 
> showing that it set up properly:

The drivers for the two versions are pretty different. One thing that is
worth checking is that the newer USB serial driver versions properly
honour carrier handling and the like.

Alan