I have encountered this bug too when I unplug and plug back the network cable rapidly. A "workaround" of this trouble is to wait enough time (10 seconds) that network manager change it state *and* is ready to detect that ethernet link came up.
So, in order to reproduce : - unplug the ethernet cable (or unplug network switch's power source) - plug it back within 4-5 seconds (network manager should have the time to detect that the cable is unplugged but not enough to be ready to detect when the cable will be plugged back) result : you will be disconnected -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1152927 Title: NetworkManager does not detect ethernet connected To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1152927/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
