This bug looks a lot like mine (with the same network card, but another revision), with the difference that I can not find the connection via the network-manager applet https://bugs.launchpad.net/ubuntu/+source /network-manager/+bug/1715013 so I do not know if they can be considered as duplicates
-- 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/1721541 Title: Lan connection lost but network-manager still sees connection as active Status in network-manager package in Ubuntu: New Bug description: From time to time the wired connection is no longer accessible for a few minutes while network-manager always sees it active, even when I disconnect / reconnect from the applet. To recover the connection, either I wait a few minutes, or I unplug and then reconnect the cable. The other devices connected to the router have no issue and despite new network cables, only the computer under Ubuntu is affected (the same with the r8168 driver) ProblemType: Bug DistroRelease: Ubuntu 17.10 Package: network-manager 1.8.4-1ubuntu1 ProcVersionSignature: Ubuntu 4.13.0-12.13-generic 4.13.3 Uname: Linux 4.13.0-12-generic x86_64 ApportVersion: 2.20.7-0ubuntu2 Architecture: amd64 CurrentDesktop: XFCE Date: Thu Oct 5 15:02:48 2017 IfupdownConfig: # interfaces(5) file used by ifup(8) and ifdown(8) auto lo iface lo inet loopback InstallationDate: Installed on 2017-09-27 (8 days ago) InstallationMedia: Xubuntu 17.10 "Artful Aardvark" - Alpha amd64 (20170926) IpRoute: default via 192.168.0.254 dev enp2s0 proto static metric 100 169.254.0.0/16 dev enp2s0 scope link metric 1000 192.168.0.0/24 dev enp2s0 proto kernel scope link src 192.168.0.11 metric 100 IwConfig: enp2s0 no wireless extensions. lo no wireless extensions. NetworkManager.state: [main] NetworkingEnabled=true WirelessEnabled=true WWANEnabled=true RfKill: SourcePackage: network-manager UpgradeStatus: No upgrade log present (probably fresh install) nmcli-con: NAME UUID TYPE TIMESTAMP TIMESTAMP-REAL AUTOCONNECT AUTOCONNECT-PRIORITY READONLY DBUS-PATH ACTIVE DEVICE STATE ACTIVE-PATH SLAVE OpenDNS 6917d17f-d173-43fa-a516-7c8503bdcc7e 802-3-ethernet 1507208476 jeu. 05 oct. 2017 15:01:16 CEST yes 0 no /org/freedesktop/NetworkManager/Settings/1 yes enp2s0 activated /org/freedesktop/NetworkManager/ActiveConnection/3 -- nmcli-dev: DEVICE TYPE STATE DBUS-PATH CONNECTION CON-UUID CON-PATH enp2s0 ethernet connected /org/freedesktop/NetworkManager/Devices/2 OpenDNS 6917d17f-d173-43fa-a516-7c8503bdcc7e /org/freedesktop/NetworkManager/ActiveConnection/3 lo loopback unmanaged /org/freedesktop/NetworkManager/Devices/1 -- -- -- nmcli-nm: RUNNING VERSION STATE STARTUP CONNECTIVITY NETWORKING WIFI-HW WIFI WWAN-HW WWAN running 1.8.4 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/1721541/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp