The log shows that DHCP requests timeout, are you sure the wifi you are trying to connect to is working? It looks like an infrastructure issue rather than an Ubuntu bug
-- 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/1767322 Title: "Activation of network connection failed" popup shows incessantly Status in network-manager package in Ubuntu: Confirmed Bug description: All network connections work normally, however the popup "Activation of network connection failed" keeps showing. ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: network-manager 1.10.6-2ubuntu1 ProcVersionSignature: Ubuntu 4.15.0-20.21-lowlatency 4.15.17 Uname: Linux 4.15.0-20-lowlatency x86_64 ApportVersion: 2.20.9-0ubuntu7 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Fri Apr 27 20:04:56 2018 IfupdownConfig: # interfaces(5) file used by ifup(8) and ifdown(8) auto lo iface lo inet loopback InstallationDate: Installed on 2018-04-03 (24 days ago) InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 (20180402) IpRoute: default via 192.168.1.1 dev wlp2s0 proto dhcp metric 600 169.254.0.0/16 dev virbr1 scope link metric 1000 linkdown 192.168.1.0/24 dev wlp2s0 proto kernel scope link src 192.168.1.128 metric 600 192.168.100.0/24 dev virbr1 proto kernel scope link src 192.168.100.1 linkdown 192.168.122.0/24 dev virbr0 proto kernel scope link src 192.168.122.1 linkdown NetworkManager.state: [main] NetworkingEnabled=true WirelessEnabled=true WWANEnabled=true SourcePackage: network-manager UpgradeStatus: No upgrade log present (probably fresh install) nmcli-nm: RUNNING VERSION STATE STARTUP CONNECTIVITY NETWORKING WIFI-HW WIFI WWAN-HW WWAN running 1.10.6 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/1767322/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
