#683839 modemmanager fiddles with ttyUSB devices without asking first

[Ian Jackson <ijackson@chiark.greenend.org.uk>]

I think that this bug
  http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=683839
is RC.

My complaint is that modemmanager (if installed) opens all ttyUSB
devices, as they appear, and sends them Hayes command strings in the
hope that they are modems.

As I wrote:

  Severity justification: This behaviour of modemmanager can undoubtedly
  cause trouble for unrelated software on the system.

  It might cause machinery connected to the computer to malfunction,
  perhaps causing physical damage or even personal injury.  These latter
  consequences are perhaps unlikely but it is difficult to analyse the
  risk because we can't know what protocols such hardware speaks.

The maintainer has not responded to this substantively, but has simply
downgraded the bug.

Ian.