*** This bug is a duplicate of bug 1585863 *** https://bugs.launchpad.net/bugs/1585863
Probably not a duplicate of #1585863 because that bug says that the network can be restored by performing `sudo wpa_cli scan`. I just tried this and it does not work for me, only `sudo service network-manager restart` seems to work as indicated in the bug description. ** Description changed: Steps: Suspend, wait, resume, a few times. The Network Manager applet shows WiFi is enabled and shows just one or a handful of WiFi names, they don't include some that are known to be available and in use on other computers. Disabling and enabling WiFi does not fix the problem. Disabling and enabling networking does not fix the problem. Adding the following does not help: - /etc/pm/config.d/unload_modules + /etc/pm/config.d/unload_modules SUSPEND_MODULES="$SUSPEND_MODULES iwlwifi" + + Running `sudo wpa_cli scan` does not restore the network connection. I + only mention this because of a similar bug where this is an effective + workaround. Only workaround which works perfectly and instantly is to run: sudo service network-manager restart ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: network-manager 1.2.0-0ubuntu0.16.04.2 ProcVersionSignature: Ubuntu 4.4.0-22.40-generic 4.4.8 Uname: Linux 4.4.0-22-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.1 Architecture: amd64 CurrentDesktop: Unity Date: Sat Jun 4 18:18:50 2016 IfupdownConfig: - # interfaces(5) file used by ifup(8) and ifdown(8) - auto lo - iface lo inet loopback + # interfaces(5) file used by ifup(8) and ifdown(8) + auto lo + iface lo inet loopback InstallationDate: Installed on 2016-05-30 (4 days ago) InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1) IpRoute: - default via 192.168.43.1 dev wlp2s0 proto static metric 600 - 169.254.0.0/16 dev wlp2s0 scope link metric 1000 - 192.168.43.0/24 dev wlp2s0 proto kernel scope link src 192.168.43.89 metric 600 + default via 192.168.43.1 dev wlp2s0 proto static metric 600 + 169.254.0.0/16 dev wlp2s0 scope link metric 1000 + 192.168.43.0/24 dev wlp2s0 proto kernel scope link src 192.168.43.89 metric 600 NetworkManager.state: - [main] - NetworkingEnabled=true - WirelessEnabled=true - WWANEnabled=true + [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 - wlp2s0 wifi connected /org/freedesktop/NetworkManager/Devices/0 HTC Portable Hotspot DF99 c29b59ba-b6ef-49db-b159-75ec21d3f436 /org/freedesktop/NetworkManager/ActiveConnection/0 - enp1s0 ethernet unavailable /org/freedesktop/NetworkManager/Devices/1 -- -- -- - lo loopback unmanaged /org/freedesktop/NetworkManager/Devices/2 -- -- -- + DEVICE TYPE STATE DBUS-PATH CONNECTION CON-UUID CON-PATH + wlp2s0 wifi connected /org/freedesktop/NetworkManager/Devices/0 HTC Portable Hotspot DF99 c29b59ba-b6ef-49db-b159-75ec21d3f436 /org/freedesktop/NetworkManager/ActiveConnection/0 + enp1s0 ethernet unavailable /org/freedesktop/NetworkManager/Devices/1 -- -- -- + lo loopback unmanaged /org/freedesktop/NetworkManager/Devices/2 -- -- -- nmcli-nm: Error: command ['nmcli', '-f', 'all', 'nm'] failed with exit code 2: Error: Object 'nm' is unknown, try 'nmcli help'. -- 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/1589125 Title: WiFi does not work after about 1 in 4 suspends Status in network-manager package in Ubuntu: Confirmed Bug description: Steps: Suspend, wait, resume, a few times. The Network Manager applet shows WiFi is enabled and shows just one or a handful of WiFi names, they don't include some that are known to be available and in use on other computers. Disabling and enabling WiFi does not fix the problem. Disabling and enabling networking does not fix the problem. Adding the following does not help: /etc/pm/config.d/unload_modules SUSPEND_MODULES="$SUSPEND_MODULES iwlwifi" Running `sudo wpa_cli scan` does not restore the network connection. I only mention this because of a similar bug where this is an effective workaround. Only workaround which works perfectly and instantly is to run: sudo service network-manager restart ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: network-manager 1.2.0-0ubuntu0.16.04.2 ProcVersionSignature: Ubuntu 4.4.0-22.40-generic 4.4.8 Uname: Linux 4.4.0-22-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.1 Architecture: amd64 CurrentDesktop: Unity Date: Sat Jun 4 18:18:50 2016 IfupdownConfig: # interfaces(5) file used by ifup(8) and ifdown(8) auto lo iface lo inet loopback InstallationDate: Installed on 2016-05-30 (4 days ago) InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1) IpRoute: default via 192.168.43.1 dev wlp2s0 proto static metric 600 169.254.0.0/16 dev wlp2s0 scope link metric 1000 192.168.43.0/24 dev wlp2s0 proto kernel scope link src 192.168.43.89 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 wlp2s0 wifi connected /org/freedesktop/NetworkManager/Devices/0 HTC Portable Hotspot DF99 c29b59ba-b6ef-49db-b159-75ec21d3f436 /org/freedesktop/NetworkManager/ActiveConnection/0 enp1s0 ethernet unavailable /org/freedesktop/NetworkManager/Devices/1 -- -- -- lo loopback unmanaged /org/freedesktop/NetworkManager/Devices/2 -- -- -- nmcli-nm: Error: command ['nmcli', '-f', 'all', 'nm'] failed with exit code 2: Error: Object 'nm' is unknown, try 'nmcli help'. 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