Public bug reported: As others have reported this I just woke my Thinkpad 450 to find no network. I resolved this by manually reconnecting with "nmcli c up id <network_name>" where <network_name> was taken from the output of "nmcli c" on the same machine.
Steps to reproduce:- This is an intermittent issue which for me happens once in a while, but not super often to be annoying. For others it appears to happen often. I suspend my laptop multiple times daily and don't see this more than once per couple of weeks, or sometimes once a month. * Use laptop in one location on wifi * Suspend (shut lid) laptop * Resume (open lid) in same location (so same wifi networks nearby) Expected behaviour:- * Network come back up Actual behaviour:- * No network connectivity * nm-applet icon shows the two arrows as if a wired connection is made * No or few wireless erroneous wireless networks shown nearby * Workaround 1 (reconnect from command line) nmcli c (lists wireless networks, look for yours in the "NAME" column, use it in command below) nmcli c up id NAME * Workaround 2 (restart entire network stack) This AskUbuntu question has one solution http://askubuntu.com/questions/761180/wifi-doesnt-work-after-suspend- after-16-04-upgrade#761220 Further information:- Output of nmcli m while suspending and resuming:- alan@gort:~$ nmcli m Connectivity is now 'none' Networkmanager is now in the 'asleep' state enp0s25: unmanaged wlp3s0: unmanaged Connectivity is now 'full' Networkmanager is now in the 'connected (local only)' state enp0s25: unavailable wlp3s0: unavailable wlp3s0: disconnected Output of nmcli after using workaround 1 above:- popey_2.4g_bed: connection profile changed Connectivity is now 'none' Networkmanager is now in the 'connecting' state wlp3s0: connecting (configuring) wlp3s0: using connection 'popey_2.4g_bed' wlp3s0: connecting (getting IP configuration) Connectivity is now 'full' 'popey_2.4g_bed' is now the primary connection Networkmanager is now in the 'connected' state wlp3s0: connected popey_2.4g_bed: connection profile changed Hardware info:- Thinkpad T450 alan@gort:~$ lspci | grep -i net 00:19.0 Ethernet controller: Intel Corporation Ethernet Connection (3) I218-LM (rev 03) 03:00.0 Network controller: Intel Corporation Wireless 7265 (rev 59) alan@gort:~$ uptime 05:31:54 up 2 days, 18:03, 7 users, load average: 0.34, 0.94, 1.04 ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: network-manager 1.2.2-0ubuntu0.16.04.3 ProcVersionSignature: Ubuntu 4.4.0-57.78-generic 4.4.35 Uname: Linux 4.4.0-57-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.4 Architecture: amd64 CurrentDesktop: Unity Date: Sat Dec 31 05:38:47 2016 IfupdownConfig: # interfaces(5) file used by ifup(8) and ifdown(8) auto lo iface lo inet loopback InstallationDate: Installed on 2016-04-27 (247 days ago) InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1) IpRoute: default via 192.168.1.1 dev wlp3s0 proto static metric 600 10.0.3.0/24 dev lxcbr0 proto kernel scope link src 10.0.3.1 linkdown 10.235.160.0/24 dev lxdbr0 proto kernel scope link src 10.235.160.1 linkdown 172.17.0.0/16 dev docker0 proto kernel scope link src 172.17.0.1 linkdown 192.168.1.0/24 dev wlp3s0 proto kernel scope link src 192.168.1.95 metric 600 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 1.2.2 connected started full enabled enabled enabled enabled enabled ** Affects: network-manager (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug third-party-packages xenial -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1653324 Title: No wireless networks visible on resume from suspend. Erroneous Wired connection icon in nm-applet To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1653324/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
