在我的新华硕 A450J 上，我有一个无线网卡 Broadcom 43142 (14e4:4365)。此 WiFi 卡在预装的 Win 8.1 下运行良好。
在全新安装的 Ubuntu 中，我的 wifi 卡无法工作。我尝试了几种方法（外部 deb 包、ndiswrapper、多次安装 Ubuntu）来使其工作，但总是遇到同样的问题：卡看起来可以很好地识别，但我无法激活它。
以下软件包是本机安装的：bcmwl-kernel-source，版本 6.30.223。来自上一篇，这应该足以使卡正常工作，但事实并非如此。
modprobe 使人相信一切正常：
$ sudo modprobe wl
$ echo $?
0
但该卡一直处于停用状态：
$ sudo lshw -C network
*-network DISABLED
description: Wireless interface
product: BCM43142 802.11b/g/n
vendor: Broadcom Corporation
physical id: 0
bus info: pci@0000:03:00.0
logical name: wlan0
version: 01
serial: 30:10:b3:0b:da:66
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=wl0 driverversion=6.30.223.141 (r415941) latency=0 multicast=yes wireless=IEEE 802.11abg
resources: irq:18 memory:f7900000-f7907fff
[...]
通过网络设置窗口，如果我打开无线网卡，它会立即关闭。
提前感谢任何解决此问题的提示。有关我的系统的其他（有用？）信息：
wget -N -t 5 -T 10 http://dl.dropbox.com/u/57264241/wireless_script && chmod +x wireless_script && ./wireless_script
生成以下 wireless-info.txt（另请参阅http://paste.ubuntu.com/9678828/)：
########## wireless info START ##########
Report from: 31 Dec 2014 18:14 CET +0100
Booted last: 31 Dec 2014 18:09 CET +0100
Script from: 20 Sep 2014 23:04 UTC +0000
##### release ###########################
Distributor ID: Ubuntu
Description: Ubuntu 14.04.1 LTS
Release: 14.04
Codename: trusty
##### kernel ############################
Linux 3.13.0-43-generic #72-Ubuntu SMP Mon Dec 8 19:35:06 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
Parameters: ro, quiet, splash, vt.handoff=7
##### desktop ###########################
Ubuntu
##### lspci #############################
03:00.0 Network controller [0280]: Broadcom Corporation BCM43142 802.11b/g/n [14e4:4365] (rev 01)
Subsystem: Lite-On Communications Inc Device [11ad:6605]
Kernel driver in use: wl
04:00.0 Ethernet controller [0200]: Qualcomm Atheros QCA8171 Gigabit Ethernet [1969:10a1] (rev 10)
Subsystem: ASUSTeK Computer Inc. Device [1043:200f]
Kernel driver in use: alx
##### lsusb #############################
Bus 002 Device 002: ID 8087:8000 Intel Corp.
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 8087:8008 Intel Corp.
Bus 001 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 002: ID 04f2:b3d8 Chicony Electronics Co., Ltd
Bus 003 Device 003: ID 04ca:2006 Lite-On Technology Corp.
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
##### PCMCIA card info ##################
##### rfkill ############################
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
1: brcmwl-0: Wireless LAN
Soft blocked: no
Hard blocked: no
2: acer-wireless: Wireless LAN
Soft blocked: yes
Hard blocked: no
##### lsmod #############################
asus_nb_wmi 16990 0
acer_wmi 32522 0
asus_wmi 24191 1 asus_nb_wmi
sparse_keymap 13948 2 acer_wmi,asus_wmi
wl 4207846 0
lib80211 14381 2 wl,lib80211_crypt_tkip
cfg80211 484040 1 wl
mxm_wmi 13021 1 nouveau
wmi 19177 4 acer_wmi,mxm_wmi,nouveau,asus_wmi
video 19476 4 i915,acer_wmi,nouveau,asus_wmi
##### interfaces ########################
auto lo
iface lo inet loopback
##### ifconfig ##########################
eth0 Link encap:Ethernet HWaddr <MAC 'eth0' [IF]>
inet addr:192.168.0.39 Bcast:192.168.0.255 Mask:255.255.255.0
inet6 addr: fe80::ae9e:17ff:fe41:2cae/64 Scope:Link
UP BROADCAST RUNNING 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:19
wlan0 Link encap:Ethernet HWaddr <MAC 'wlan0' [IF]>
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:18
##### iwconfig ##########################
eth0 no wireless extensions.
lo no wireless extensions.
wlan0 IEEE 802.11abg ESSID:off/any
Mode:Managed Access Point: Not-Associated
Retry long limit:7 RTS thr:off Fragment thr:off
Power Management:off
##### route #############################
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 192.168.0.254 0.0.0.0 UG 0 0 0 eth0
192.168.0.0 0.0.0.0 255.255.255.0 U 1 0 0 eth0
##### resolv.conf #######################
nameserver 127.0.1.1
##### nm-tool ###########################
NetworkManager Tool
State: connected (global)
- Device: eth0 [Wired connection 1] -------------------------------------------
Type: Wired
Driver: alx
State: connected
Default: yes
HW Address: <MAC 'eth0' [IF]>
Capabilities:
Carrier Detect: yes
Speed: 100 Mb/s
Wired Properties
Carrier: on
IPv4 Settings:
Address: 192.168.0.39
Prefix: 24 (255.255.255.0)
Gateway: 192.168.0.254
DNS: 212.27.40.241
DNS: 212.27.40.240
- Device: wlan0 ----------------------------------------------------------------
Type: 802.11 WiFi
Driver: wl
State: unavailable
Default: no
HW Address: <MAC 'wlan0' [IF]>
Capabilities:
Wireless Properties
WEP Encryption: yes
WPA Encryption: yes
WPA2 Encryption: yes
Wireless Access Points
##### 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 ###########
##### iw reg get ########################
Region: Europe/Paris (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.
lo Interface doesn't support scanning.
wlan0 Interface doesn't support scanning : Network is down
##### module infos ######################
[wl]
filename: /lib/modules/3.13.0-43-generic/updates/dkms/wl.ko
license: MIXED/Proprietary
srcversion: FF25FE784DC6BDFF69DAFCB
depends: cfg80211,lib80211
vermagic: 3.13.0-43-generic SMP mod_unload modversions
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/3.13.0-43-generic/kernel/net/wireless/cfg80211.ko
description: wireless configuration support
license: GPL
author: Johannes Berg
srcversion: C2478077E22138832B71659
depends:
intree: Y
vermagic: 3.13.0-43-generic SMP mod_unload modversions
signer: Magrathea: Glacier signing key
sig_key: 55:AB:2F:E2:8E:D5:C6:0D:F9:58:71:50:D1:73:4C:92:0E:A7:B8:18
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/asus.conf]
options asus_nb_wmi wapf=1
[/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 0x1969:0x10a1 (alx)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="<MAC 'eth0' [IF]>", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"
# PCI device 0x14e4:0x4365 (wl)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="<MAC 'wlan0' [IF]>", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="wlan*", NAME="wlan0"
##### dmesg #############################
[ 13.374900] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 307.358883] ERROR @wl_dev_intvar_get : error (-1)
########## wireless info END ############
$lspci |grep Broadcom
03:00.0 Network controller: Broadcom Corporation BCM43142 802.11b/g/n (rev 01)
lspci -vn
[...]
03:00.0 0280: 14e4:4365 (rev 01)
Subsystem: 11ad:6605
Flags: bus master, fast devsel, latency 0, IRQ 18
Memory at f7900000 (64-bit, non-prefetchable) [size=32K]
Capabilities: <access denied>
Kernel driver in use: wl
[...]
$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 14.04.1 LTS
Release: 14.04
Codename: trusty
$ dpkg --get-selections|grep bcm
bcmwl-kernel-source install
libcmis-0.4-4 install
答案1
符号瘦身*-network DISABLED 通常表示无线设备被硬件开关或组合键阻止；Fn+F4 或类似组合键。您可以从终端检查：
rfkill list all
我确信您已经尝试过按下该键，但无济于事。
华硕笔记本电脑有一个辅助模块，用于将按键转化为操作，即打开无线功能。它通常无法正常工作，除非设置参数。请尝试：
echo "options asus_nb_wmi wapf=1" | sudo tee /etc/modprobe.d/asus.conf
重新启动并查看您的无线键组合以及无线是否正常工作。
如果 wapf=1 无效，您可以尝试 wapf=4，已知在某些情况下有效，方法是用 4 覆盖文件：
echo "options asus_nb_wmi wapf=4" | sudo tee /etc/modprobe.d/asus.conf
重新启动并查看您的无线键组合以及无线是否正常工作。