Comment 8 for bug 360905

to test, download that patch to /tmp/ directory, then do:

1. sudo apt-get install build-essential
2. sudo apt-get build-dep network-manager
3. apt-get source network-manager
4. cd network-manager-*/
5. patch -p1 < /tmp/0030-core-only-match-serial-devices-when-filtering-on-or.patch
6. dpkg-buildpackage -rfakeroot -b
7. sudo dpkg -i ../*.deb

once that succeeds restart your system.