Comment 13 for bug 84139

I've been hit by this problem too. Even though answers found through Google suggested a complete removal of brltty, I dig deeper. Finally I narrowed down the problem to one of the udev rule, specifically tailored for an otherwise generic 0403:6001 Vendor/Product combination. After commenting it out, my USB->Serial adapter worked flawlessly.

Additional info:
* Bug #122834 - FTDI USB Serial Device converter disconnects

The conclusion is that udev rules should be changed. So, awaiting the action from maintainers... A simple, one-liner removal. Please!