*** This bug is a duplicate of bug 1676547 *** https://bugs.launchpad.net/bugs/1676547
I have tried all the above but did not work for me? I was running Ubuntu 16.04.2 LTS Xenial with no problem until two days ago. Then, after I did a routine software update which I was prompted to do but Ubuntu software updater, I had an error saying something went wrong. After I rebooted the machine, I had no longer ethernet. My card is realtek. The command below sudo lshw -C network gave me -network UNCLAIMED and doing ifconfig i do not see any ethernet connection there. For now, I was able to get on the web and post this message to you only because I had a backup exact copy of my 120gb SSD, hence I was able to just change the SSD and get back to the Ubuntu system I had BEFORE the update. I think this is a serious bug in Ubuntu, if did not have backup, would have caused a lot of inconvenience, with me being unable to go on the web using my Desktop PC. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to network-manager in Ubuntu. https://bugs.launchpad.net/bugs/1638842 Title: network-manager does not manage ethernet and bluetooth interfaces when Ubuntu 16.10 is installed using chroot/netboot method Status in network-manager package in Ubuntu: Won't Fix Bug description: Hello, I installed Ubuntu 16.10 using a chroot. I use network-manager to manage connections. My system is up-to-date (so I use network-manager 1.2.4-0ubuntu1). Wifi works perfectly but I cannot connect to wired networks and using my phone's Bluetooth connection. Corresponding devices are said to be unmanaged by network-manager. nmcli dev outputs: DEVICE TYPE STATE CONNECTION enp1s0 ethernet unmanaged -- wlp2s0 wifi disconnected -- 6C:9B:02:2C:EE:2C bt unmanaged -- hfp/org/bluez/hci0/dev_6C_9B_02_2C_EE_2C gsm unmanaged -- lo loopback unmanaged -- The following command has no effect: sudo nmcli dev set enp1s0 managed yes I can connect to a wired connection by doing: ifconfig enp1s0 up dhclient enp1s0 There is nothing in the file /etc/network/interfaces. Everything works perfectly if I downgrade network-manager to this version: network-manager_1.2.2-0ubuntu0.16.04.3_amd64.deb (http://packages.ubuntu.com/xenial-updates/amd64/network- manager/download). I had to install libreadline6 and downgrade nplan to meet dependencies. I don't know what to join to this bug report so please ask in case anything is needed. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1638842/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp