I can confirm that this also happens when toggling the radio killswitch on my x230 with Xenial:
Jul 26 09:48:19 Host NetworkManager[2979]: <info> [1469540899.8669] manager: WiFi now enabled by radio killswitch Jul 26 09:48:19 Host kernel: [71025.599893] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready Jul 26 09:48:19 Host wpa_supplicant[3344]: dbus: wpa_dbus_get_object_properties: failed to get object properties: (none) none Jul 26 09:48:19 Host wpa_supplicant[3344]: dbus: Failed to construct signal Jul 26 09:48:19 Host NetworkManager[2979]: <info> [1469540899.9049] device (wlan0): supplicant interface state: starting -> ready Jul 26 09:48:19 Host NetworkManager[2979]: <info> [1469540899.9050] device (wlan0): state change: unavailable -> disconnected (reason 'supplicant-available') [20 30 42] Jul 26 09:48:19 Host kernel: [71025.639368] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready -- 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/1585863 Title: WiFi malfunction after suspend & resume stress - sudo wpa_cli scan required to fix it. Status in NetworkManager: New Status in OEM Priority Project: New Status in OEM Priority Project xenial series: New Status in network-manager package in Ubuntu: Confirmed Bug description: Description: Ubuntu Yakkety Yak (development branch) Release: 16.10 Packages: libnm-glib-vpn1:amd64 1.2.2-0ubuntu2 libnm-glib4:amd64 1.2.2-0ubuntu2 libnm-util2:amd64 1.2.2-0ubuntu2 libnm0:amd64 1.2.2-0ubuntu2 network-manager 1.2.2-0ubuntu2 Reproduce steps: 1. Install fwts by `sudo apt-get install fwts`. 2. Run the suspend & resume stress test. sudo fwts s3 --s3-multiple=30 --s3-min-delay=5 --s3-max-delay=5 --s3-delay-delta=5 Expected result: The WiFi still functioned. Actual result: The WiFi can not connect to any access point and we have to execute `sudo wpa_cli scan` manually to make it work again. P.S. Ubuntu 16.04 also has the same issue. To manage notifications about this bug go to: https://bugs.launchpad.net/network-manager/+bug/1585863/+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
