Obviously, there's others having issues with Ubuntu Server 18.04 and their network connectivity.
I prefer to use NetworkManager to control my wifi and wired Ethernet network interfaces. Ubuntu has a different view it seems (prefer networkd for wired interface, NetworkManager for wifi it seems), but there should be no bugs for those that choose to configure their systems to use NetworkManager. My networking hardware with NetworkManager is rock solid on CentOS Server 7.4, so I don't get why the network connectivity using NetworkManager is not stable for Ubuntu Server 18.04? Please see the following string from this recent Ubuntu bug ticket opened with regards to the wired network interface not working properly with Ubuntu 18.04 (their is is mostly similar, though their road is slightly different in figuring out something is not right with Ubuntu 18.04 server and their network interface). To sum this long bug post, the Ubuntu Server 18.04 implementation of NetworkManager is maybe not preferred, but it should be working perfectly on my Intel i219-v onboard network adapter. https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1772859 There's a bug somewhere (e1000e driver, Ubuntu 18.04 implementation of NetworkManager, etc.) given the poor/strange performance I'm seeing on multiple fronts. Intermittent loss of internet connectivity and very, very poor download performance across my setup of the Intel i219-V onboard NI and the implementation of Netplan/NetworkManager on the Ubuntu Server 18.04 OS. If it's not a bug (meaning a configuration like mine is proven 99.9999% stable using the scientific method through verification in the lab), then let's get the proper NetworkManager configuration information documented in detail on the Ubuntu wiki, so this same issue is not be brought up over and over again. Please let me know if there is more help and info I can provide to get to this fixed and working properly as it should be. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1785171 Title: Intel I219-V Ethernet Interface on Ubuntu Linux Using e1000e Driver keeps Dropping Internet Connection Status in linux package in Ubuntu: Incomplete Status in linux source package in Bionic: Incomplete Bug description: I've turned up many, many new server and workstation systems over the years on both Linux and Windows. Never seen anything like this behaviour I'm witnessing on Ubuntu Server 18.04 before where I simply lose Internet connectivity while using a browser. Ethernet interfaces usually either work or they don't work. I've configured the Intel I219-V Ethernet interface (wired Ethernet connection, there is no wifi on this system) using the e1000e driver for Ubuntu. The Ethernet connection is configured to use NetworkManager via Netplan on Ubuntu 18.04 LTS Server version. ASRock Z370m Pro4 motherboard. The Ethernet interface will drop the Internet connectivity when I'm using either the Firefox or Chrome browser. It usually happens when I'm using the search features of the browser. I can't figure out what would cause this type of behaviour. When the Internet connection drops, the only way to get back Internet connectivity is to disconnect the wired connection using the Ubuntu features and then re-connect (this restarts the NetworkManager service I notice). In the NetworkManager logs I do notice an "auth" error about a file or directory not found. I've never seen that before. Note: The auth error does not coincide with the loss of Internet connectivity, but it does proceed it. Often there can be many hours between the auth error and the actual loss of Internet connectivity. After I reconnect the connection (via re-starting the NetworkManager service) all will be fine for up to a day or so, but then I stress test it with a bunch of searches using the browser and usually I can get the Internet connectivity to drop again. Repeat the disconnect and reconnect process again (aka re-start NetworkManager) and the Internet connectivity will be fine again. The longest I've seen it go without an "Internet connectivity drop" issue is about 36 hours. I notice that the e1000e driver does not list the I219-V as a supported Ethernet interface in the Intel documentation for the Linux version of the driver. I'm not sure why that is. The I219-V is supposed to used another driver, but it's not clear there's a Linux version for of the driver for the I219-V. I'm really disappointed that I've run into this issue with Ubuntu Server LTS 18.04 on this motherboard. I had CentOS Server 7.4 (my standard server OS, a great Linux distro) on this same motherboard for a week with no issues, so I know the motherboard and the I219-V Ethernet interface are 100% good hardware wise and can work properly. CentOS 7.4 uses NetworkManager as the default for managing the Ethernet interface. The only reason I'm using Ubuntu Server 18.04 on this motherboard is because of a specific package that Ubuntu has a newer packaged version than CentOS. CentOS is extremely stable when it comes to basic server functionality. Hopefully, this bug with the I219-V Ethernet interface using the e1000e drive for Linux can be verified and a fix rolled out. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1785171/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp