I did as directed in https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/40125/comments/68 (sudo cp NetworkManager.conf /etc/dbus-1/system.d/) with http://librarian.launchpad.net/7403629/NetworkManager.conf.
After one week, I can't reproduce the misbehaviour I had (unable to use wire after wifi/suspend).
I did as directed in https:/ /bugs.launchpad .net/ubuntu/ +source/ network- manager/ +bug/40125/ comments/ 68 (sudo cp NetworkManager.conf /etc/dbus- 1/system. d/) with http:// librarian. launchpad. net/7403629/ NetworkManager. conf.
After one week, I can't reproduce the misbehaviour I had (unable to use wire after wifi/suspend).