Before I submitted this, I had run the following command, per the web page mentioned above.
sudo apt-get install libnl-3-200=3.2.21-1 libnl-route-3-200=3.2.21-1 libnl-genl-3-200=3.2.21-1 After submitting this, I ran the following commands: sudo apt-get update sudo apt-get install network-manager network-manager was reinstalled, and my server gets connected to the LAN again automatically after I reboot. network-manager-gnome was also reinstalled. I'd like to know if I can safely do sudo apt-mark unhold libnl-3-200 libnl-genl-3-200 libnl-route-3-200 For now, I'll just stick with the downgraded libnl packages as I don't want to have more networking problems. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to network-manager in Ubuntu. https://bugs.launchpad.net/bugs/1761911 Title: Have to manually "sudo ifconfig eth0 up" and "sudo dhclient eth0" after every reboot Status in network-manager package in Ubuntu: New Bug description: I did an upgrade with "sudo apt-get dist-upgrade", and it removed network-manager and network-manager-gnome. I could not connect to my LAN afer that. I was able to find instructions for downgrading the libnl packages at https://askubuntu.com/questions/727127/last-upgrade-crashes-network-manager-no-internet-connection-no-applet I am able to get online again by running the following commands sudo ifconfig eth0 up sudo dhclient eth0 (Fortunately, I have a Ethernet I can plug in to.) I have to do this every time I reboot. This is inconvenient as a usually use Desktop Sharing with another computer as the client. I use an SSH tunnel for security. This means that every time I reboot, I have to physically access the computer's console to enter the ifconfig and dhclient commands to get the computer back on the network. I tried to reinstall network-manager and network-manager-gnome, but the command results said there were dependencies that prevented the installation. The fixes in the web page referenced above do not help, so I'm reporting this as a bug. Thanks for your assistance. $ sudo lsb_release -rd [sudo] password for wally: Description: Ubuntu 14.04.1 LTS Release: 14.04 $ $ apt-cache policy network-manager network-manager: Installed: (none) Candidate: 0.9.8.8-0ubuntu7.1 Version table: 0.9.8.8-0ubuntu7.1 0 500 http://security.ubuntu.com/ubuntu/ trusty-security/main amd64 Packages 100 /var/lib/dpkg/status 0.9.8.8-0ubuntu7 0 500 http://archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages $ ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: network-manager (not installed) ProcVersionSignature: Ubuntu 3.13.0-144.193-generic 3.13.11-ckt39 Uname: Linux 3.13.0-144-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.27 Architecture: amd64 CurrentDesktop: Unity Date: Fri Apr 6 21:21:27 2018 InstallationDate: Installed on 2014-10-22 (1262 days ago) InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2) ProcEnviron: LANGUAGE=en_US PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: network-manager UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1761911/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : email@example.com Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp