所以我最近刚刚修好了我的 BCM43124 无线适配器，sudo apt-get install bcmwl-kernel-source现在它可以正常工作了。不过又出现了另一个问题。每当我离路由器太远（在客厅）时，连接就会开始断开，然后再次连接。“太远”似乎距离路由器约 10 英尺。我不知道问题出在哪里。当我使用 Windows 时以及在我旧的 Acer Aspire 上使用 11.10 时，从未出现过此问题。我现在的笔记本电脑是 Satelite C75，运行的是 14.04 LTS
无线信息脚本：
########## wireless info START ##########
Report from: 01 Jun 2015 23:33 CDT -0500
Booted last: 01 Jun 2015 16:30 CDT -0500
Script from: 21 May 2015 09:10 UTC +0000
##### release ###########################
Distributor ID: Ubuntu
Description: Ubuntu 14.04.2 LTS
Release: 14.04
Codename: trusty
##### kernel ############################
Linux 3.16.0-38-generic #52~14.04.1-Ubuntu SMP Fri May 8 09:43:57 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
Parameters: ro, quiet, splash, vt.handoff=7
##### desktop ###########################
Ubuntu
##### lspci #############################
01:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller [10ec:8136] (rev 07)
Subsystem: Toshiba America Info Systems Device [1179:ff1e]
Kernel driver in use: r8169
05:00.0 Network controller [0280]: Broadcom Corporation BCM43142 802.11b/g/n [14e4:4365] (rev 01)
Subsystem: Lite-On Communications Inc Device [11ad:6655]
Kernel driver in use: wl
##### lsusb #############################
Bus 002 Device 004: ID 10f1:1a5b Importek
Bus 002 Device 003: ID 0930:0225 Toshiba Corp.
Bus 002 Device 002: ID 0438:7900 Advanced Micro Devices, Inc.
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 0438:7900 Advanced Micro Devices, Inc.
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 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
##### lsmod #############################
wl 6367833 0
cfg80211 494362 1 wl
wmi 19193 1 toshiba_acpi
##### interfaces ########################
auto lo
iface lo inet loopback
##### ifconfig ##########################
eth0 Link encap:Ethernet HWaddr <MAC 'eth0' [IF]>
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)
wlan0 Link encap:Ethernet HWaddr <MAC 'wlan0' [IF]>
inet addr:192.168.1.10 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::1acf:5eff:fef3:893b/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:2750527 errors:0 dropped:0 overruns:0 frame:391027
TX packets:1775481 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:3810679467 (3.8 GB) TX bytes:219721426 (219.7 MB)
Interrupt:32
##### iwconfig ##########################
eth0 no wireless extensions.
lo no wireless extensions.
wlan0 IEEE 802.11abg ESSID:"NETGEAR"
Mode:Managed Frequency:2.417 GHz Access Point: <MAC 'NETGEAR' [AC1]>
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
0.0.0.0 192.168.1.1 0.0.0.0 UG 0 0 0 wlan0
192.168.1.0 0.0.0.0 255.255.255.0 U 9 0 0 wlan0
##### resolv.conf #######################
nameserver 127.0.1.1
##### network managers ##################
Installed:
NetworkManager
Running:
root 818 1 0 16:30 ? 00:00:05 NetworkManager
##### NetworkManager info ###############
NetworkManager Tool
State: connected (global)
- Device: wlan0 [NETGEAR] -----------------------------------------------------
Type: 802.11 WiFi
Driver: wl
State: connected
Default: yes
HW Address: <MAC 'wlan0' [IF]>
Capabilities:
Speed: 65 Mb/s
Wireless Properties
WEP Encryption: yes
WPA Encryption: yes
WPA2 Encryption: yes
Wireless Access Points (* = current AP)
Chavez Linares: Infra, <MAC 'Chavez Linares' [AN1]>, Freq 2437 MHz, Rate 54 Mb/s, Strength 45 WPA WPA2
ATT9ZzNxPi: Infra, <MAC 'ATT9ZzNxPi' [AC2]>, Freq 2462 MHz, Rate 54 Mb/s, Strength 34 WPA WPA2
D553C5: Infra, <MAC 'D553C5' [AN3]>, Freq 2437 MHz, Rate 54 Mb/s, Strength 22 WPA WPA2
Chavez Linares-guest: Infra, <MAC 'Chavez Linares-guest' [AN4]>, Freq 2437 MHz, Rate 54 Mb/s, Strength 44
D76189: Infra, <MAC 'D76189' [AN5]>, Freq 2462 MHz, Rate 54 Mb/s, Strength 20 WPA WPA2
*NETGEAR: Infra, <MAC 'NETGEAR' [AC1]>, Freq 2417 MHz, Rate 54 Mb/s, Strength 59 WPA2
IPv4 Settings:
Address: 192.168.1.10
Prefix: 24 (255.255.255.0)
Gateway: 192.168.1.1
DNS: 192.168.1.1
- Device: eth0 -----------------------------------------------------------------
Type: Wired
Driver: r8169
State: unavailable
Default: no
HW Address: <MAC 'eth0' [IF]>
Capabilities:
Carrier Detect: yes
Wired Properties
Carrier: off
##### 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/NETGEAR]] (600 root)
[connection] id=NETGEAR | type=802-11-wireless | permissions=user:kong:;
[802-11-wireless] ssid=NETGEAR | bssid=<MAC 'NETGEAR' [AC1]> | mac-address=<MAC 'wlan0' [IF]>
[ipv4] method=auto
[ipv6] method=ignore
##### iw reg get ########################
Region: America/Chicago (based on set time zone)
country US:
(2402 - 2472 @ 40), (3, 27)
(5170 - 5250 @ 40), (3, 17)
(5250 - 5330 @ 40), (3, 20), DFS
(5490 - 5600 @ 40), (3, 20), DFS
(5650 - 5710 @ 40), (3, 20), DFS
(5735 - 5835 @ 40), (3, 30)
(57240 - 63720 @ 2160), (N/A, 40)
##### iwlist channels ###################
eth0 no frequency information.
lo no frequency information.
wlan0 32 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 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 52 : 5.26 GHz
Channel 56 : 5.28 GHz
Channel 60 : 5.3 GHz
Channel 64 : 5.32 GHz
Channel 100 : 5.5 GHz
Channel 104 : 5.52 GHz
Channel 108 : 5.54 GHz
Channel 112 : 5.56 GHz
Channel 116 : 5.58 GHz
Channel 132 : 5.66 GHz
Channel 136 : 5.68 GHz
Channel 140 : 5.7 GHz
Channel 149 : 5.745 GHz
Channel 153 : 5.765 GHz
Current Frequency:2.417 GHz (Channel 2)
##### iwlist scan #######################
eth0 Interface doesn't support scanning.
lo Interface doesn't support scanning.
Channel occupancy:
1 APs on Frequency:2.417 GHz (Channel 2)
1 APs on Frequency:2.462 GHz (Channel 11)
wlan0 Scan completed :
Cell 01 - Address: <MAC 'NETGEAR' [AC1]>
Channel:2
Frequency:2.417 GHz (Channel 2)
Quality=56/70 Signal level=-54 dBm
Encryption key:on
ESSID:"NETGEAR"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
9 Mb/s; 12 Mb/s; 18 Mb/s
Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
Mode:Master
Extra:tsf=0000000000000000
Extra: Last beacon: 68ms ago
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : CCMP
Pairwise Ciphers (1) : CCMP
Authentication Suites (1) : PSK
Cell 02 - Address: <MAC 'ATT9ZzNxPi' [AC2]>
Channel:11
Frequency:2.462 GHz (Channel 11)
Quality=46/70 Signal level=-64 dBm
Encryption key:on
ESSID:"ATT9ZzNxPi"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
24 Mb/s; 36 Mb/s; 54 Mb/s
Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
Mode:Master
Extra:tsf=0000000000000000
Extra: Last beacon: 68ms ago
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : TKIP
Pairwise Ciphers (2) : CCMP TKIP
Authentication Suites (1) : PSK
IE: WPA Version 1
Group Cipher : TKIP
Pairwise Ciphers (2) : CCMP TKIP
Authentication Suites (1) : PSK
##### module infos ######################
[wl]
filename: /lib/modules/3.16.0-38-generic/updates/dkms/wl.ko
license: MIXED/Proprietary
srcversion: 9A49255BA90267D99664757
depends: cfg80211
vermagic: 3.16.0-38-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/3.16.0-38-generic/kernel/net/wireless/cfg80211.ko
description: wireless configuration support
license: GPL
author: Johannes Berg
srcversion: 33ED2C1448F5AEDBE7AF59E
depends:
intree: Y
vermagic: 3.16.0-38-generic SMP mod_unload modversions
signer: Magrathea: Glacier signing key
sig_key: C2:84:ED:AC:CF:0B:47:36:52:C3:4D:23:BE:C3:56:94:42:36:E6:3B
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
[/etc/modprobe.d/modesetting.conf]
options cirrus modeset=1
options mgag200 modeset=1
##### rc.local ##########################
exit 0
##### pm-utils ##########################
##### udev rules ########################
[/etc/udev/rules.d/70-persistent-net.rules]
# PCI device 0x10ec:0x8136 (r8169)
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 #############################
[22738.256347] ERROR @wl_dev_intvar_get : error (-1)
########## wireless info END ############