2016年5月13日更新后WiFi停止工作（Xubuntu 14.04.4 LTS）
我星期五正常使用我的桌面，但是当我在星期六（昨天）启动它时，图标托盘中没有WiFi图标，现在没有网络连接。 我相信在关闭之前我周五安装了一些更新。
我一直在寻找几个小时的解决方案。 我已经尝试降级libnl包（没有运气;很多错误），validation/ etc / network / interfaces看起来像“应该”，使用“sudo ifconfig eth0 up”和“sudo ifconfig wlan0 up”，杀死并重新启动网络管理员，以及其他一些事情。
这是wireless-info脚本的输出：
########## wireless info START ########## Report from: 15 May 2016 07:55 EDT -0400 Booted last: 15 May 2016 07:07 EDT -0400 Script from: 27 Sep 2015 00:34 UTC +0000 ##### release ########################### Distributor ID: Ubuntu Description: Ubuntu 14.04.4 LTS Release: 14.04 Codename: trusty ##### kernel ############################ Linux 3.19.0-59-generic #65~14.04.1-Ubuntu SMP Tue Apr 19 18:57:09 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux Parameters: ro, quiet, splash ##### desktop ########################### Xubuntu ##### lspci ############################# 00:19.0 Ethernet controller [0200]: Intel Corporation Ethernet Connection (2) I218-V [8086:15a1] Subsystem: ASUSTeK Computer Inc. Device [1043:85c4] Kernel driver in use: e1000e 05:00.0 Network controller [0280]: Broadcom Corporation BCM4352 802.11ac Wireless Network Adapter [14e4:43b1] (rev 03) Subsystem: ASUSTeK Computer Inc. Device [1043:855c] Kernel driver in use: wl ##### lsusb ############################# Bus 006 Device 002: ID 8087:8001 Intel Corp. Bus 006 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 005 Device 002: ID 8087:8009 Intel Corp. Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 008: ID 13fe:3d00 Kingston Technology Company Inc. Bus 001 Device 002: ID 1038:1384 SteelSeries ApS Bus 001 Device 005: ID 0b05:17cf ASUSTek Computer, Inc. Bus 001 Device 006: ID 0665:6000 Cypress Semiconductor Bus 001 Device 004: ID 05e3:0608 Genesys Logic, Inc. Hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub ##### PCMCIA card info ################## ##### rfkill ############################ 0: hci0: Bluetooth Soft blocked: no Hard blocked: no 1: phy0: Wireless LAN Soft blocked: no Hard blocked: no 2: brcmwl-0: Wireless LAN Soft blocked: no Hard blocked: no ##### lsmod ############################# wl 6369280 0 eeepc_wmi 16384 0 asus_wmi 24576 1 eeepc_wmi sparse_keymap 16384 1 asus_wmi mxm_wmi 16384 0 cfg80211 532480 1 wl wmi 20480 2 mxm_wmi,asus_wmi video 20480 1 asus_wmi ##### interfaces ######################## auto lo iface lo inet loopback ##### ifconfig ########################## eth0 Link encap:Ethernet HWaddr UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) Interrupt:20 Memory:df800000-df820000 wlan0 Link encap:Ethernet HWaddr BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) Interrupt:16 ##### iwconfig ########################## eth0 no wireless extensions. lo no wireless extensions. wlan0 IEEE 802.11abg ESSID:off/any Mode:Managed Access Point: Not-Associated Retry short limit:7 RTS thr:off Fragment thr:off Power Management:off ##### route ############################# Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface ##### resolv.conf ####################### ##### network managers ################## Installed: NetworkManager Running: None found. ##### NetworkManager info ############### ** (process:2982): WARNING **: Could not initialize NMClient /org/freedesktop/NetworkManager: The name org.freedesktop.NetworkManager was not provided by any .service files ** (process:2982): WARNING **: error: could not connect to NetworkManager NetworkManager Tool State: unknown ##### NetworkManager.state ############## [main] NetworkingEnabled=true WirelessEnabled=true WWANEnabled=true WimaxEnabled=true ##### NetworkManager.conf ############### [main] plugins=ifupdown,keyfile,ofono dns=dnsmasq [ifupdown] managed=false ##### NetworkManager profiles ########### [[/etc/NetworkManager/system-connections/NSA5]] (600 root) [connection] id=NSA5 | type=802-11-wireless [802-11-wireless] ssid=NSA5 | mac-address= [ipv4] method=auto [ipv6] method=auto ##### iw reg get ######################## Region: America (based on set time zone) country 00: (2402 - 2472 @ 40), (3, 20) (2457 - 2482 @ 40), (3, 20), PASSIVE-SCAN, NO-IBSS (2474 - 2494 @ 20), (3, 20), NO-OFDM, PASSIVE-SCAN, NO-IBSS (5170 - 5250 @ 40), (3, 20), PASSIVE-SCAN, NO-IBSS (5735 - 5835 @ 40), (3, 20), PASSIVE-SCAN, NO-IBSS ##### iwlist channels ################### eth0 no frequency information. lo no frequency information. wlan0 26 channels in total; available frequencies : Channel 01 : 2.412 GHz Channel 02 : 2.417 GHz Channel 03 : 2.422 GHz Channel 04 : 2.427 GHz Channel 05 : 2.432 GHz Channel 06 : 2.437 GHz Channel 07 : 2.442 GHz Channel 08 : 2.447 GHz Channel 09 : 2.452 GHz Channel 10 : 2.457 GHz Channel 11 : 2.462 GHz Channel 12 : 2.467 GHz Channel 13 : 2.472 GHz Channel 14 : 2.484 GHz Channel 36 : 5.18 GHz Channel 38 : 5.19 GHz Channel 40 : 5.2 GHz Channel 42 : 5.21 GHz Channel 44 : 5.22 GHz Channel 46 : 5.23 GHz Channel 48 : 5.24 GHz Channel 149 : 5.745 GHz Channel 153 : 5.765 GHz Channel 157 : 5.785 GHz Channel 161 : 5.805 GHz Channel 165 : 5.825 GHz ##### iwlist scan ####################### eth0 Interface doesn't support scanning. wlan0 Interface doesn't support scanning : Network is down lo Interface doesn't support scanning. ##### module infos ###################### [wl] filename: /lib/modules/3.19.0-59-generic/updates/dkms/wl.ko license: MIXED/Proprietary srcversion: 3F8570547EE3A2BA3D5D734 depends: cfg80211 vermagic: 3.19.0-59-generic SMP mod_unload modversions parm: passivemode:int parm: wl_txq_thresh:int parm: oneonly:int parm: piomode:int parm: instance_base:int parm: nompc:int parm: intf_name:string [cfg80211] filename: /lib/modules/3.19.0-59-generic/kernel/net/wireless/cfg80211.ko description: wireless configuration support license: GPL author: Johannes Berg srcversion: 46EBD6732E992614FD7F01B depends: intree: Y vermagic: 3.19.0-59-generic SMP mod_unload modversions signer: Magrathea: Glacier signing key sig_key: 3B:80:88:D8:E6:B9:3E:AD:6E:77:B0:3C:9C:4E:5C:BA:FB:1A:0B:20 sig_hashalgo: sha512 parm: ieee80211_regdom:IEEE 802.11 regulatory domain code (charp) parm: cfg80211_disable_40mhz_24ghz:Disable 40MHz support in the 2.4GHz band (bool) ##### module parameters ################# [cfg80211] cfg80211_disable_40mhz_24ghz: N ieee80211_regdom: 00 ##### /etc/modules ###################### lp rtc ##### modprobe options ################## [/etc/modprobe.d/blacklist-ath_pci.conf] blacklist ath_pci [/etc/modprobe.d/blacklist-bcm43.conf] blacklist b43 blacklist b43legacy blacklist ssb blacklist bcm43xx blacklist brcm80211 blacklist brcmfmac blacklist brcmsmac blacklist bcma [/etc/modprobe.d/blacklist.conf] blacklist evbug blacklist usbmouse blacklist usbkbd blacklist eepro100 blacklist de4x5 blacklist eth1394 blacklist snd_intel8x0m blacklist snd_aw2 blacklist i2c_i801 blacklist prism54 blacklist bcm43xx blacklist garmin_gps blacklist asus_acpi blacklist snd_pcsp blacklist pcspkr blacklist amd76x_edac [/etc/modprobe.d/blacklist-rare-network.conf] alias net-pf-3 off alias net-pf-6 off alias net-pf-9 off alias net-pf-11 off alias net-pf-12 off alias net-pf-19 off alias net-pf-21 off alias net-pf-36 off [/etc/modprobe.d/iwlwifi.conf] remove iwlwifi \ (/sbin/lsmod | grep -o -e ^iwlmvm -e ^iwldvm -e ^iwlwifi | xargs /sbin/rmmod) \ && /sbin/modprobe -r mac80211 [/etc/modprobe.d/mlx4.conf] softdep mlx4_core post: mlx4_en ##### rc.local ########################## exit 0 ##### pm-utils ########################## ##### udev rules ######################## [/etc/udev/rules.d/70-persistent-net.rules] # PCI device 0x8086:0x15a1 (e1000e) SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0" # PCI device 0x14e4:0x43b1 (wl) SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="wlan*", NAME="wlan0" ##### dmesg ############################# [ 3.764190] init: network-manager main process (1080) killed by SEGV signal [ 3.764194] init: network-manager main process ended, respawning [ 3.768649] init: network-manager main process (1084) killed by SEGV signal [ 3.768653] init: network-manager main process ended, respawning [ 3.773436] init: network-manager main process (1088) killed by SEGV signal [ 3.773442] init: network-manager main process ended, respawning [ 3.777916] init: network-manager main process (1092) killed by SEGV signal [ 3.777921] init: network-manager main process ended, respawning [ 3.782390] init: network-manager main process (1096) killed by SEGV signal [ 3.782395] init: network-manager main process ended, respawning [ 3.786736] init: network-manager main process (1100) killed by SEGV signal [ 3.786741] init: network-manager main process ended, respawning [ 3.791089] init: network-manager main process (1104) killed by SEGV signal [ 3.791093] init: network-manager main process ended, respawning [ 3.795645] init: network-manager main process (1108) killed by SEGV signal [ 3.795649] init: network-manager main process ended, respawning [ 3.799944] init: network-manager main process (1112) killed by SEGV signal [ 3.799948] init: network-manager respawning too fast, stopped [ 370.075724] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready [ 1256.755005] traps: NetworkManager[2628] general protection ip:469fee sp:7fffd0059330 error:0 in NetworkManager[400000+10d000] [ 1256.824208] init: network-manager main process (2628) killed by SEGV signal [ 1256.824214] init: network-manager main process ended, respawning [ 1256.828225] traps: NetworkManager[2633] general protection ip:469fee sp:7ffdfc898530 error:0 in NetworkManager[400000+10d000] [ 1256.888321] init: network-manager main process (2633) killed by SEGV signal [ 1256.888327] init: network-manager main process ended, respawning [ 1256.892194] traps: NetworkManager[2638] general protection ip:469fee sp:7fff8c17c470 error:0 in NetworkManager[400000+10d000] [ 1256.952027] init: network-manager main process (2638) killed by SEGV signal [ 1256.952033] init: network-manager main process ended, respawning [ 1256.956001] traps: NetworkManager[2643] general protection ip:469fee sp:7ffde2787bc0 error:0 in NetworkManager[400000+10d000] [ 1257.015273] init: network-manager main process (2643) killed by SEGV signal [ 1257.015280] init: network-manager main process ended, respawning [ 1257.019507] traps: NetworkManager[2648] general protection ip:469fee sp:7ffdbe70be10 error:0 in NetworkManager[400000+10d000] [ 1257.080366] init: network-manager main process (2648) killed by SEGV signal [ 1257.080373] init: network-manager main process ended, respawning [ 1257.084445] traps: NetworkManager[2653] general protection ip:469fee sp:7ffd66f2c6a0 error:0 in NetworkManager[400000+10d000] [ 1257.145109] init: network-manager main process (2653) killed by SEGV signal [ 1257.145115] init: network-manager main process ended, respawning [ 1257.148948] traps: NetworkManager[2658] general protection ip:469fee sp:7ffd26b6da30 error:0 in NetworkManager[400000+10d000] [ 1257.209643] init: network-manager main process (2658) killed by SEGV signal [ 1257.209650] init: network-manager main process ended, respawning [ 1257.213707] traps: NetworkManager[2663] general protection ip:469fee sp:7ffce1201280 error:0 in NetworkManager[400000+10d000] [ 1257.273139] init: network-manager main process (2663) killed by SEGV signal [ 1257.273146] init: network-manager main process ended, respawning [ 1257.277199] traps: NetworkManager[2668] general protection ip:469fee sp:7ffdd51fe290 error:0 in NetworkManager[400000+10d000] [ 1257.337713] init: network-manager main process (2668) killed by SEGV signal [ 1257.337720] init: network-manager main process ended, respawning [ 1257.341554] traps: NetworkManager[2673] general protection ip:469fee sp:7fff9af2b6e0 error:0 in NetworkManager[400000+10d000] [ 1257.400840] init: network-manager main process (2673) killed by SEGV signal [ 1257.400846] init: network-manager main process ended, respawning [ 1257.463779] init: network-manager main process (2678) killed by SEGV signal [ 1257.463786] init: network-manager respawning too fast, stopped [ 2940.611218] ERROR @wl_dev_intvar_get : error (-1) ########## wireless info END ############ 另一个诊断信息：
me@desktop:~$ sudo lshw -C network *-network description: Ethernet interface product: Ethernet Connection (2) I218-V vendor: Intel Corporation physical id: 19 bus info: pci@0000:00:19.0 logical name: eth0 version: 00 serial: 08:62:66:26:dd:43 capacity: 1Gbit/s width: 32 bits clock: 33MHz capabilities: pm msi bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=e1000e driverversion=2.3.2-k firmware=0.1-4 latency=0 link=no multicast=yes port=twisted pair resources: irq:41 memory:df800000-df81ffff memory:df838000-df838fff ioport:f040(size=32) *-network DISABLED description: Wireless interface product: BCM4352 802.11ac Wireless Network Adapter vendor: Broadcom Corporation physical id: 0 bus info: pci@0000:05:00.0 logical name: wlan0 version: 03 serial: 40:e2:30:98:75:73 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=wl0 driverversion=6.30.223.248 (r487574) latency=0 multicast=yes wireless=IEEE 802.11abg resources: irq:16 memory:df400000-df407fff memory:df200000-df3fffff
另一个：
me@desktop:~$ lspci -knn | grep Net -A2 05:00.0 Network controller [0280]: Broadcom Corporation BCM4352 802.11ac Wireless Network Adapter [14e4:43b1] (rev 03) Subsystem: ASUSTeK Computer Inc. Device [1043:855c] Kernel driver in use: wl
最后一个：
me@desktop:~$ sudo nm-applet ** (nm-applet:2690): WARNING **: Couldn't connect to accessibility bus: Failed to connect to socket /tmp/dbus-ctmYfT0Ijd: Connection refused (nm-applet:2690): Gtk-WARNING **: Theme parsing error: gtk-widgets.css:2769:41: Expected a valid selector ** (nm-applet:2690): WARNING **: Could not initialize NMClient /org/freedesktop/NetworkManager: The name org.freedesktop.NetworkManager was not provided by any .service files (nm-applet:2690): nm-applet-WARNING **: Error connecting to ModemManager: Error calling StartServiceByName for org.freedesktop.ModemManager1: GDBus.Error:org.freedesktop.DBus.Error.Spawn.ExecFailed: Cannot launch daemon, file not found or permissions invalid (nm-applet:2690): nm-applet-WARNING **: Failed to register as an agent: (2) The name org.freedesktop.NetworkManager was not provided by any .service files nm-applet-Message: using fallback from indicator to GtkStatusIcon ^C nm-applet-Message: PID 0 (we are 2690) sent signal 2, shutting down... g_dbus_connection_real_closed: Remote peer vanished with error: Underlying GIOStream returned 0 bytes on an async read (g-io-error-quark, 0). Exiting. nm-applet-Message: PID 2690 (we are 2690) sent signal 15, shutting down... ** (nm-applet:2690): CRITICAL **: nm_secret_agent_unregister: assertion 'priv->registered == TRUE' failed
请让我知道其他信息可能有助于解决我的问题。
谢谢！
这里的决议 ： http ： //ubuntuforums.org/showthread.php？t = 2324639＆p = 13489595