我的笔记本电脑是 T460，具有英特尔 8260 无线接口。
当它运行 Ubuntu 16.10 x64 桌面时，它可以连接到我的 AP WIFI（SSID 为 FET_Printer_Service）以及我的手机热点
升级到 Ubuntu 17.04 x64 Desktop 后，我的笔记本电脑无法连接到 WIFI。但它仍然可以从我的手机连接到我的热点。日志如下：
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
答案1
查看 launchpad.net 错误1683836，1676547，1681513。根据在其上找到的分辨率：
使用：
ifconfig
确定您的 WiFi 接口名称 ( wl...)
创造：
sudo nano /etc/NetworkManager/conf.d/disable-random-mac.conf
和：
[device-wlan0]
match-device=wlan0
wifi.scan-rand-mac-address=no
wlan0并用您之前找到的接口名称替换上面的两个实例。
重新启动网络管理器服务。
sudo service network-manager restart