(In reply to Oliver Neukum from comment #6) > Michael, > > it looks like the udev rules introduced with the update of brltty to version > 5.3.1 broke some USB to RS232 converters by being to unspecific. Do you have > a braille device of this kind so we can get better distinction? >From what I can see, it uses the FTDI converter as it's generic driver. It's not clear to me why. There shouldn't be a braille device which uses this ID to identify itself.