I think I have the same issue on my nettop using "Pegatron RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller". It doesn't work out of the box on neither Ubuntu Server (bionic) nor Arch, but I used to run Ubuntu Server on this hardware around a year ago without any problems.
Someone else downgraded their kernel from 4.15 to 4.14 on Arch to solve this issue after updating, with identical hardware. I'm linking some pastes that were requested in the IRC channel. modinfo r8168 (I tried to fix things by installing r8168-dkms) > paste.ubuntu.com/p/2spYWX5t4k/ modinfo r8169 (I was asked to unload r8168 and load r1869) > https://paste.ubuntu.com/p/jg9rbKThWZ/ dhclient -v (it also takes 5 minutes to boot, until it times out) &> https://paste.ubuntu.com/p/D3JpycKrq3/ -- 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/1769386 Title: Cable network does not get recognized anymore, wifi works Status in network-manager package in Ubuntu: Confirmed Status in Arch Linux: New Bug description: ubuntu 16.04 LTS cable does not connect anymore, wifi working ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: network-manager 1.2.6-0ubuntu0.16.04.2 ProcVersionSignature: Ubuntu 4.13.0-39.44~16.04.1-generic 4.13.16 Uname: Linux 4.13.0-39-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.16 Architecture: amd64 CurrentDesktop: Unity Date: Sat May 5 19:27:18 2018 IfupdownConfig: # interfaces(5) file used by ifup(8) and ifdown(8) auto lo iface lo inet loopback InstallationDate: Installed on 2017-09-30 (217 days ago) InstallationMedia: Ubuntu 16.04.3 LTS "Xenial Xerus" - Release amd64 (20170801) IpRoute: default via 192.168.1.1 dev wlp3s0 proto static metric 600 169.254.0.0/16 dev wlp3s0 scope link metric 1000 192.168.1.0/24 dev wlp3s0 proto kernel scope link src 192.168.1.2 metric 600 NetworkManager.state: [main] NetworkingEnabled=true WirelessEnabled=true WWANEnabled=true SourcePackage: network-manager UpgradeStatus: No upgrade log present (probably fresh install) nmcli-dev: DEVICE TYPE STATE DBUS-PATH CONNECTION CON-UUID CON-PATH wlp3s0 wifi connected /org/freedesktop/NetworkManager/Devices/1 WiFi-2.4-3569 7103236e-31c4-43d6-871d-14f3cda4b657 /org/freedesktop/NetworkManager/ActiveConnection/1 enp2s0f1 ethernet disconnected /org/freedesktop/NetworkManager/Devices/2 -- -- -- lo loopback unmanaged /org/freedesktop/NetworkManager/Devices/0 -- -- -- nmcli-nm: RUNNING VERSION STATE STARTUP CONNECTIVITY NETWORKING WIFI-HW WIFI WWAN-HW WWAN running 1.2.6 connected started full enabled enabled enabled enabled enabled To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1769386/+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
