Ubuntu 17.04 x64 Desktop não pode se conectar AP WIFI

Question

Meu laptop é o T460, que possui a interface sem fio Intel 8260.

Quando o Ubuntu 16.10 x64 Desktop é executado, ele pode se conectar ao meu AP WIFI (SSID é FET_Printer_Service) e ao meu hot spot do meu celular

Depois de atualizar para o Ubuntu 17.04 x64 Desktop, meu laptop não pode se conectar ao meu WIFI. Mas ainda pode se conectar ao meu ponto quente do meu celular. o log é como abaixo:

    Apr 25 08:25:30 xwureka NetworkManager[987]: <info>  [1493079930.7235] device (wlp3s0): disconnecting for new activation request.
    Apr 25 08:25:30 xwureka NetworkManager[987]: <info>  [1493079930.7236] device (wlp3s0): state change: activated -> deactivating (reason 'new-activation') [100 110 60]
    Apr 25 08:25:30 xwureka NetworkManager[987]: <info>  [1493079930.7237] manager: NetworkManager state is now DISCONNECTING
    Apr 25 08:25:30 xwureka dbus[967]: [system] Activating via systemd: service name='org.freedesktop.nm_dispatcher' unit='dbus-org.freedesktop.nm-dispatcher.service'
    Apr 25 08:25:30 xwureka whoopsie[1005]: [08:25:30] offline
    Apr 25 08:25:30 xwureka systemd[1]: Starting Network Manager Script Dispatcher Service...
    Apr 25 08:25:30 xwureka NetworkManager[987]: <info>  [1493079930.7271] audit: op="connection-activate" uuid="8ea3108e-a8e3-4a93-8f00-027d2fe0bea6" name="FET_Printer_Service" pid=2737 uid=1000 result="success"
    Apr 25 08:25:30 xwureka NetworkManager[987]: <info>  [1493079930.7279] device (wlp3s0): state change: deactivating -> disconnected (reason 'new-activation') [110 30 60]
    Apr 25 08:25:30 xwureka vmnetBridge: RTM_NEWLINK: name:wlp3s0 index:3 flags:0x00011043
    Apr 25 08:25:30 xwureka vmnet-natd: RTM_NEWLINK: name:wlp3s0 index:3 flags:0x00011043
    Apr 25 08:25:30 xwureka avahi-daemon[1033]: Withdrawing address record for fe80::87b2:69d6:a28d:e792 on wlp3s0.
    Apr 25 08:25:30 xwureka avahi-daemon[1033]: Leaving mDNS multicast group on interface wlp3s0.IPv6 with address fe80::87b2:69d6:a28d:e792.
    Apr 25 08:25:30 xwureka avahi-daemon[1033]: Interface wlp3s0.IPv6 no longer relevant for mDNS.
    Apr 25 08:25:30 xwureka dbus[967]: [system] Successfully activated service 'org.freedesktop.nm_dispatcher'
    Apr 25 08:25:30 xwureka systemd[1]: Started Network Manager Script Dispatcher Service.
    Apr 25 08:25:30 xwureka nm-dispatcher: req:1 'connectivity-change': new request (1 scripts)
    Apr 25 08:25:30 xwureka nm-dispatcher: req:1 'connectivity-change': start running ordered scripts...
    Apr 25 08:25:30 xwureka NetworkManager[987]: <info>  [1493079930.7615] dhcp4 (wlp3s0): canceled DHCP transaction, DHCP client pid 11847
    Apr 25 08:25:30 xwureka NetworkManager[987]: <info>  [1493079930.7615] dhcp4 (wlp3s0): state changed bound -> done
    Apr 25 08:25:30 xwureka deja-dup-monito[11363]: Source ID 194 was not found when attempting to remove it
    Apr 25 08:25:30 xwureka kernel: [ 1012.007035] wlp3s0: deauthenticating from 02:1a:11:f6:4a:ae by local choice (Reason: 3=DEAUTH_LEAVING)
    Apr 25 08:25:30 xwureka wpa_supplicant[1295]: wlp3s0: CTRL-EVENT-DISCONNECTED bssid=02:1a:11:f6:4a:ae reason=3 locally_generated=1
    Apr 25 08:25:30 xwureka vmnet-natd: RTM_NEWLINK: name:wlp3s0 index:3 flags:0x00001003
    Apr 25 08:25:30 xwureka whoopsie[1005]: [08:25:30] Cannot reach: https://daisy.ubuntu.com
    Apr 25 08:25:30 xwureka vmnetBridge: RTM_NEWLINK: name:wlp3s0 index:3 flags:0x00001003
    Apr 25 08:25:30 xwureka vmnetBridge: Removing interface wlp3s0 index:3
    Apr 25 08:25:30 xwureka kernel: [ 1012.020044] bridge-wlp3s0: disabling the bridge
    Apr 25 08:25:30 xwureka vmnet-natd: RTM_DELADDR: index:3, addr:192.168.1.17
    Apr 25 08:25:30 xwureka avahi-daemon[1033]: Withdrawing address record for 192.168.1.17 on wlp3s0.
    Apr 25 08:25:30 xwureka avahi-daemon[1033]: Leaving mDNS multicast group on interface wlp3s0.IPv4 with address 192.168.1.17.
    Apr 25 08:25:30 xwureka vmnet-natd: RTM_NEWLINK: name:wlp3s0 index:3 flags:0x00001002
    Apr 25 08:25:30 xwureka vmnet-natd: RTM_NEWLINK: name:wlp3s0 index:3 flags:0x00001002
    Apr 25 08:25:30 xwureka avahi-daemon[1033]: Interface wlp3s0.IPv4 no longer relevant for mDNS.
    Apr 25 08:25:30 xwureka NetworkManager[987]: <info>  [1493079930.7783] device (wlp3s0): set-hw-addr: set MAC address to 4A:15:30:33:43:BE (scanning)
    Apr 25 08:25:30 xwureka whoopsie[1005]: [08:25:30] Cannot reach: https://daisy.ubuntu.com
    Apr 25 08:25:30 xwureka vmnet-natd: RTM_NEWLINK: name:wlp3s0 index:3 flags:0x00001003
    Apr 25 08:25:30 xwureka kernel: [ 1012.027875] IPv6: ADDRCONF(NETDEV_UP): wlp3s0: link is not ready
    Apr 25 08:25:30 xwureka NetworkManager[987]: <info>  [1493079930.7836] manager: NetworkManager state is now DISCONNECTED
    Apr 25 08:25:30 xwureka NetworkManager[987]: <info>  [1493079930.7837] device (wlp3s0): Activation: starting connection 'FET_Printer_Service' (8ea3108e-a8e3-4a93-8f00-027d2fe0bea6)
    Apr 25 08:25:30 xwureka NetworkManager[987]: <warn>  [1493079930.7843] sup-iface[0x557d95685ab0,wlp3s0]: connection disconnected (reason -3)
    Apr 25 08:25:30 xwureka NetworkManager[987]: <info>  [1493079930.7843] device (wlp3s0): supplicant interface state: completed -> disconnected
    Apr 25 08:25:30 xwureka NetworkManager[987]: <info>  [1493079930.7854] device (wlp3s0): state change: disconnected -> prepare (reason 'none') [30 40 0]
    Apr 25 08:25:30 xwureka NetworkManager[987]: <info>  [1493079930.7855] manager: NetworkManager state is now CONNECTING
    Apr 25 08:25:30 xwureka nm-dispatcher: req:2 'down' [wlp3s0]: new request (1 scripts)
    Apr 25 08:25:30 xwureka nm-dispatcher: req:2 'down' [wlp3s0]: start running ordered scripts...
    Apr 25 08:25:30 xwureka kernel: [ 1012.033038] bridge-wlp3s0: down
    Apr 25 08:25:30 xwureka kernel: [ 1012.033049] bridge-wlp3s0: detached
    Apr 25 08:25:30 xwureka vmnetBridge: Stopped bridge wlp3s0 to virtual network 0.
    Apr 25 08:25:30 xwureka vmnet-natd: RTM_NEWLINK: name:wlp3s0 index:3 flags:0x00001002
    Apr 25 08:25:30 xwureka NetworkManager[987]: <info>  [1493079930.7884] device (wlp3s0): set-hw-addr: set-cloned MAC address to F4:8C:50:61:19:8A (permanent)
    Apr 25 08:25:30 xwureka vmnetBridge: RTM_NEWLINK: name:wlp3s0 index:3 flags:0x00001002
    Apr 25 08:25:30 xwureka vmnetBridge: RTM_NEWLINK: name:wlp3s0 index:3 flags:0x00001002
    Apr 25 08:25:30 xwureka vmnetBridge: RTM_NEWLINK: name:wlp3s0 index:3 flags:0x00001003
    Apr 25 08:25:30 xwureka vmnetBridge: RTM_NEWLINK: name:wlp3s0 index:3 flags:0x00001002
    Apr 25 08:25:30 xwureka vmnet-natd: RTM_NEWLINK: name:wlp3s0 index:3 flags:0x00001002
    Apr 25 08:25:30 xwureka vmnetBridge: RTM_NEWLINK: name:wlp3s0 index:3 flags:0x00001002
    Apr 25 08:25:30 xwureka systemd-resolved[1166]: Switching to fallback DNS server 8.8.8.8.
    Apr 25 08:25:30 xwureka systemd-resolved[1166]: Switching to fallback DNS server 8.8.4.4.
    Apr 25 08:25:30 xwureka systemd-resolved[1166]: Switching to fallback DNS server 2001:4860:4860::8888.
    Apr 25 08:25:30 xwureka systemd-resolved[1166]: Switching to fallback DNS server 2001:4860:4860::8844.
    Apr 25 08:25:30 xwureka systemd-resolved[1166]: Switching to fallback DNS server 8.8.8.8.
    Apr 25 08:25:30 xwureka whoopsie[1005]: [08:25:30] Cannot reach: https://daisy.ubuntu.com
    Apr 25 08:25:30 xwureka systemd-resolved[1166]: Switching to fallback DNS server 8.8.4.4.
    Apr 25 08:25:30 xwureka systemd-resolved[1166]: Switching to fallback DNS server 2001:4860:4860::8888.
    Apr 25 08:25:30 xwureka systemd-resolved[1166]: Switching to fallback DNS server 2001:4860:4860::8844.
    Apr 25 08:25:30 xwureka systemd-resolved[1166]: Switching to fallback DNS server 8.8.8.8.
    Apr 25 08:25:30 xwureka systemd-resolved[1166]: Switching to fallback DNS server 8.8.4.4.
    Apr 25 08:25:30 xwureka systemd-resolved[1166]: Switching to fallback DNS server 2001:4860:4860::8888.
    Apr 25 08:25:30 xwureka systemd-resolved[1166]: Switching to fallback DNS server 2001:4860:4860::8844.
    Apr 25 08:25:30 xwureka systemd-resolved[1166]: Switching to fallback DNS server 8.8.8.8.
    Apr 25 08:25:30 xwureka systemd-resolved[1166]: Switching to fallback DNS server 8.8.4.4.
    Apr 25 08:25:30 xwureka systemd-resolved[1166]: Switching to fallback DNS server 2001:4860:4860::8888.
    Apr 25 08:25:30 xwureka systemd-resolved[1166]: Switching to fallback DNS server 2001:4860:4860::8844.
    Apr 25 08:25:30 xwureka systemd-resolved[1166]: Switching to fallback DNS server 8.8.8.8.
    Apr 25 08:25:30 xwureka NetworkManager[987]: <info>  [1493079930.7935] device (wlp3s0): state change: prepare -> config (reason 'none') [40 50 0]
    Apr 25 08:25:30 xwureka vmnet-natd: RTM_NEWLINK: name:wlp3s0 index:3 flags:0x00001003
    Apr 25 08:25:30 xwureka vmnetBridge: RTM_NEWLINK: name:wlp3s0 index:3 flags:0x00001003
    Apr 25 08:25:30 xwureka NetworkManager[987]: <info>  [1493079930.7939] device (wlp3s0): Activation: (wifi) access point 'FET_Printer_Service' has security, but secrets are required.
    Apr 25 08:25:30 xwureka NetworkManager[987]: <info>  [1493079930.7939] device (wlp3s0): state change: config -> need-auth (reason 'none') [50 60 0]
    Apr 25 08:25:30 xwureka kernel: [ 1012.037770] IPv6: ADDRCONF(NETDEV_UP): wlp3s0: link is not ready
    Apr 25 08:25:30 xwureka NetworkManager[987]: <info>  [1493079930.7997] device (wlp3s0): state change: need-auth -> prepare (reason 'none') [60 40 0]
    Apr 25 08:25:30 xwureka NetworkManager[987]: <info>  [1493079930.8001] device (wlp3s0): state change: prepare -> config (reason 'none') [40 50 0]
    Apr 25 08:25:30 xwureka NetworkManager[987]: <info>  [1493079930.8003] device (wlp3s0): Activation: (wifi) connection 'FET_Printer_Service' has security, and secrets exist.  No new secrets needed.
    Apr 25 08:25:30 xwureka NetworkManager[987]: <info>  [1493079930.8004] Config: added 'ssid' value 'FET_Printer_Service'
    Apr 25 08:25:30 xwureka NetworkManager[987]: <info>  [1493079930.8004] Config: added 'scan_ssid' value '1'
    Apr 25 08:25:30 xwureka NetworkManager[987]: <info>  [1493079930.8004] Config: added 'key_mgmt' value 'WPA-PSK'
    Apr 25 08:25:30 xwureka NetworkManager[987]: <info>  [1493079930.8004] Config: added 'auth_alg' value 'OPEN'
    Apr 25 08:25:30 xwureka NetworkManager[987]: <info>  [1493079930.8004] Config: added 'psk' value '<omitted>'
    Apr 25 08:25:30 xwureka NetworkManager[987]: <info>  [1493079930.8024] sup-iface[0x557d95685ab0,wlp3s0]: config: set interface ap_scan to 1
    Apr 25 08:25:30 xwureka nm-applet[2737]: Can't set a parent on widget which has a parent
    Apr 25 08:25:30 xwureka kernel: [ 1012.220111] userif-2: sent link down event.
    Apr 25 08:25:30 xwureka kernel: [ 1012.220115] userif-2: sent link up event.
    Apr 25 08:25:31 xwureka wpa_supplicant[1295]: wlp3s0: SME: Trying to authenticate with 70:4d:7b:5d:48:58 (SSID='FET_Printer_Service' freq=2452 MHz)
    Apr 25 08:25:31 xwureka kernel: [ 1013.030015] wlp3s0: authenticate with 70:4d:7b:5d:48:58
    Apr 25 08:25:31 xwureka kernel: [ 1013.038525] wlp3s0: send auth to 70:4d:7b:5d:48:58 (try 1/3)
    Apr 25 08:25:31 xwureka NetworkManager[987]: <info>  [1493079931.8030] device (wlp3s0): supplicant interface state: disconnected -> authenticating
    Apr 25 08:25:31 xwureka kernel: [ 1013.046566] wlp3s0: authenticated
    Apr 25 08:25:31 xwureka nm-applet[2737]: Can't set a parent on widget which has a parent
    Apr 25 08:25:31 xwureka nm-applet[2737]: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
    Apr 25 08:25:32 xwureka kernel: [ 1013.652894] iwlwifi 0000:03:00.0: No association and the time event is over already...
    Apr 25 08:25:32 xwureka kernel: [ 1013.652942] wlp3s0: Connection to AP 70:4d:7b:5d:48:58 lost
    Apr 25 08:25:31 xwureka nm-applet[2737]: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
    Apr 25 08:25:32 xwureka systemd-resolved[1166]: Switching to fallback DNS server 8.8.4.4.
    Apr 25 08:25:32 xwureka systemd-resolved[1166]: Switching to fallback DNS server 2001:4860:4860::8888.
    Apr 25 08:25:32 xwureka systemd-resolved[1166]: Switching to fallback DNS server 2001:4860:4860::8844.
    Apr 25 08:25:32 xwureka systemd-resolved[1166]: Switching to fallback DNS server 8.8.8.8.
    Apr 25 08:25:32 xwureka systemd-resolved[1166]: Switching to fallback DNS server 8.8.4.4.
    Apr 25 08:25:32 xwureka systemd-resolved[1166]: Switching to fallback DNS server 2001:4860:4860::8888.
    Apr 25 08:25:32 xwureka systemd-resolved[1166]: Switching to fallback DNS server 2001:4860:4860::8844.
    Apr 25 08:25:32 xwureka systemd-resolved[1166]: Switching to fallback DNS server 8.8.8.8.
    Apr 25 08:25:32 xwureka systemd-resolved[1166]: Switching to fallback DNS server 8.8.4.4.
    Apr 25 08:25:32 xwureka systemd-resolved[1166]: Switching to fallback DNS server 2001:4860:4860::8888.
    Apr 25 08:25:32 xwureka systemd-resolved[1166]: Switching to fallback DNS server 2001:4860:4860::8844.
    Apr 25 08:25:32 xwureka systemd-resolved[1166]: Switching to fallback DNS server 8.8.8.8.
    Apr 25 08:25:32 xwureka systemd-resolved[1166]: Switching to fallback DNS server 8.8.4.4.
    Apr 25 08:25:32 xwureka systemd-resolved[1166]: Switching to fallback DNS server 2001:4860:4860::8888.
    Apr 25 08:25:32 xwureka systemd-resolved[1166]: Switching to fallback DNS server 2001:4860:4860::8844.
    Apr 25 08:25:32 xwureka systemd-resolved[1166]: Switching to fallback DNS server 8.8.8.8.
    Apr 25 08:25:33 xwureka systemd-resolved[1166]: Switching to fallback DNS server 8.8.4.4.
    Apr 25 08:25:33 xwureka systemd-resolved[1166]: Switching to fallback DNS server 2001:4860:4860::8888.
    Apr 25 08:25:33 xwureka systemd-resolved[1166]: Switching to fallback DNS server 2001:4860:4860::8844.
    Apr 25 08:25:33 xwureka systemd-resolved[1166]: Switching to fallback DNS server 8.8.8.8.
    Apr 25 08:25:33 xwureka systemd-resolved[1166]: Switching to fallback DNS server 8.8.4.4.
    Apr 25 08:25:33 xwureka systemd-resolved[1166]: Switching to fallback DNS server 2001:4860:4860::8888.
    Apr 25 08:25:33 xwureka systemd-resolved[1166]: Switching to fallback DNS server 2001:4860:4860::8844.
    Apr 25 08:25:33 xwureka systemd-resolved[1166]: Switching to fallback DNS server 8.8.8.8.
    Apr 25 08:25:33 xwureka systemd-resolved[1166]: Switching to fallback DNS server 8.8.4.4.
    Apr 25 08:25:33 xwureka systemd-resolved[1166]: Switching to fallback DNS server 2001:4860:4860::8888.
    Apr 25 08:25:33 xwureka systemd-resolved[1166]: Switching to fallback DNS server 2001:4860:4860::8844.
    Apr 25 08:25:33 xwureka systemd-resolved[1166]: Switching to fallback DNS server 8.8.8.8.
    Apr 25 08:25:33 xwureka systemd-resolved[1166]: Switching to fallback DNS server 8.8.4.4.
    Apr 25 08:25:33 xwureka systemd-resolved[1166]: Switching to fallback DNS server 2001:4860:4860::8888.
    Apr 25 08:25:33 xwureka systemd-resolved[1166]: Switching to fallback DNS server 2001:4860:4860::8844.
    Apr 25 08:25:33 xwureka systemd-resolved[1166]: Switching to fallback DNS server 8.8.8.8.
    Apr 25 08:25:35 xwureka systemd-resolved[1166]: Switching to fallback DNS server 8.8.4.4.
    Apr 25 08:25:35 xwureka systemd-resolved[1166]: Switching to fallback DNS server 2001:4860:4860::8888.
    Apr 25 08:25:35 xwureka systemd-resolved[1166]: Switching to fallback DNS server 2001:4860:4860::8844.
    Apr 25 08:25:35 xwureka systemd-resolved[1166]: Switching to fallback DNS server 8.8.8.8.
    Apr 25 08:25:35 xwureka systemd-resolved[1166]: Switching to fallback DNS server 8.8.4.4.
    Apr 25 08:25:35 xwureka compiz[2658]: [11964:12003:0425/082535.817279:ERROR:connection_factory_impl.cc(386)] Failed to connect to MCS endpoint with error -106
    Apr 25 08:25:35 xwureka systemd-resolved[1166]: Switching to fallback DNS server 2001:4860:4860::8888.
    Apr 25 08:25:35 xwureka systemd-resolved[1166]: Switching to fallback DNS server 2001:4860:4860::8844.
    Apr 25 08:25:35 xwureka systemd-resolved[1166]: Switching to fallback DNS server 8.8.8.8.
    Apr 25 08:25:35 xwureka systemd-resolved[1166]: Switching to fallback DNS server 8.8.4.4.
    Apr 25 08:25:35 xwureka systemd-resolved[1166]: Switching to fallback DNS server 2001:4860:4860::8888.
    Apr 25 08:25:35 xwureka systemd-resolved[1166]: Switching to fallback DNS server 2001:4860:4860::8844.
    Apr 25 08:25:35 xwureka systemd-resolved[1166]: Switching to fallback DNS server 8.8.8.8.
    Apr 25 08:25:35 xwureka systemd-resolved[1166]: Switching to fallback DNS server 8.8.4.4.
    Apr 25 08:25:35 xwureka systemd-resolved[1166]: Switching to fallback DNS server 2001:4860:4860::8888.
    Apr 25 08:25:35 xwureka systemd-resolved[1166]: Switching to fallback DNS server 2001:4860:4860::8844.
    Apr 25 08:25:35 xwureka systemd-resolved[1166]: Switching to fallback DNS server 8.8.8.8.
    Apr 25 08:25:36 xwureka kernel: [ 1018.040199] wlp3s0: aborting authentication with 70:4d:7b:5d:48:58 by local choice (Reason: 3=DEAUTH_LEAVING)
    Apr 25 08:25:36 xwureka NetworkManager[987]: <info>  [1493079936.8123] device (wlp3s0): supplicant interface state: authenticating -> disconnected
    Apr 25 08:25:36 xwureka NetworkManager[987]: <info>  [1493079936.9129] device (wlp3s0): supplicant interface state: disconnected -> scanning
    Apr 25 08:25:39 xwureka wpa_supplicant[1295]: wlp3s0: SME: Trying to authenticate with 70:4d:7b:5d:48:58 (SSID='FET_Printer_Service' freq=2452 MHz)
    Apr 25 08:25:39 xwureka kernel: [ 1020.668382] wlp3s0: authenticate with 70:4d:7b:5d:48:58
    Apr 25 08:25:39 xwureka kernel: [ 1020.676581] wlp3s0: send auth to 70:4d:7b:5d:48:58 (try 1/3)
    Apr 25 08:25:39 xwureka kernel: [ 1020.679493] wlp3s0: authenticated
    Apr 25 08:25:39 xwureka NetworkManager[987]: <info>  [1493079939.4488] device (wlp3s0): supplicant interface state: scanning -> authenticating
    Apr 25 08:25:39 xwureka nm-applet[2737]: Can't set a parent on widget which has a parent
    Apr 25 08:25:39 xwureka nm-applet[2737]: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
    Apr 25 08:25:40 xwureka kernel: [ 1021.291141] iwlwifi 0000:03:00.0: No association and the time event is over already...
    Apr 25 08:25:40 xwureka kernel: [ 1021.291204] wlp3s0: Connection to AP 70:4d:7b:5d:48:58 lost
    Apr 25 08:25:44 xwureka kernel: [ 1025.679554] wlp3s0: aborting authentication with 70:4d:7b:5d:48:58 by local choice (Reason: 3=DEAUTH_LEAVING)
    Apr 25 08:25:39 xwureka nm-applet[2737]: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
    Apr 25 08:25:44 xwureka NetworkManager[987]: <info>  [1493079944.4523] device (wlp3s0): supplicant interface state: authenticating -> disconnected
    Apr 25 08:25:44 xwureka NetworkManager[987]: <info>  [1493079944.9532] device (wlp3s0): supplicant interface state: disconnected -> scanning
    Apr 25 08:25:45 xwureka wpa_supplicant[1295]: wlp3s0: SME: Trying to authenticate with 70:4d:7b:5d:48:58 (SSID='FET_Printer_Service' freq=2452 MHz)
    Apr 25 08:25:45 xwureka kernel: [ 1027.122858] wlp3s0: authenticate with 70:4d:7b:5d:48:58
    Apr 25 08:25:45 xwureka kernel: [ 1027.132614] wlp3s0: send auth to 70:4d:7b:5d:48:58 (try 1/3)
    Apr 25 08:25:45 xwureka kernel: [ 1027.141686] wlp3s0: authenticated
    Apr 25 08:25:45 xwureka NetworkManager[987]: <info>  [1493079945.9096] device (wlp3s0): supplicant interface state: scanning -> authenticating
    Apr 25 08:25:45 xwureka nm-applet[2737]: Can't set a parent on widget which has a parent
    Apr 25 08:25:45 xwureka nm-applet[2737]: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
    Apr 25 08:25:46 xwureka kernel: [ 1027.747099] iwlwifi 0000:03:00.0: No association and the time event is over already...
    Apr 25 08:25:46 xwureka kernel: [ 1027.747178] wlp3s0: Connection to AP 70:4d:7b:5d:48:58 lost
    Apr 25 08:25:50 xwureka kernel: [ 1032.137521] wlp3s0: aborting authentication with 70:4d:7b:5d:48:58 by local choice (Reason: 3=DEAUTH_LEAVING)
    Apr 25 08:25:45 xwureka nm-applet[2737]: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed
    Apr 25 08:25:50 xwureka NetworkManager[987]: <info>  [1493079950.9110] device (wlp3s0): supplicant interface state: authenticating -> disconnected

    

Answer 1

Veja os bugs do launchpad.net 1683836 , 1676547 , 1681513 . De acordo com a resolução encontrada neles:

Uso:

ifconfig

Para determinar o nome da sua interface WiFi ( wl... )

Criar:

sudo nano /etc/NetworkManager/conf.d/disable-random-mac.conf  

Com:

[device-wlan0]  
match-device=wlan0  
wifi.scan-rand-mac-address=no  

E substitua as duas instâncias de wlan0 acima pelo nome da interface que você encontrou anteriormente.

Reinicie o serviço gerenciador de rede.

sudo service network-manager restart