我安装 Ububtu 14.04 已经有一段时间了，但我的 WiFi 有问题，它会随机断开连接，断开连接后很长时间都无法使用。我运行了官方答案中的脚本我的无线/WiFi 连接无法使用。诊断问题需要哪些信息？
这就是结果
> Blockquote
########## wireless info START ##########
Report from: 13 Oct 2014 19:20 CEST +0200
Booted last: 13 Oct 2014 18:12 CEST +0200
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 3.13.0-36-generic #63-Ubuntu SMP Wed Sep 3 21:30:07 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
Parameters: ro, quiet, splash,
##### desktop ###########################
Ubuntu
##### lspci #############################
20:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 03)
Subsystem: Dell Device [1028:02eb]
Kernel driver in use: r8169
##### lsusb #############################
Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 003: ID 0c45:6406 Microdia
Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
##### PCMCIA card info ##################
##### rfkill ############################
##### lsmod #############################
brcmsmac 563041 0
cordic 12574 1 brcmsmac
brcmutil 15618 1 brcmsmac
b43 387371 0
mac80211 630653 2 b43,brcmsmac
cfg80211 484040 3 b43,brcmsmac,mac80211
ssb 62379 1 b43
dell_wmi 12761 0
sparse_keymap 13948 1 dell_wmi
dell_laptop 18168 0
dcdbas 14928 1 dell_laptop
bcma 52096 2 b43,brcmsmac
wmi 19177 1 dell_wmi
##### interfaces ########################
auto lo
iface lo inet loopback
##### ifconfig ##########################
eth0 Link encap:Ethernet HWaddr <MAC 'eth0' [IF]>
inet addr:192.168.0.111 Bcast:192.168.0.255 Mask:255.255.255.0
inet6 addr: fe80::226:b9ff:fec4:4092/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1392 errors:0 dropped:0 overruns:0 frame:0
TX packets:1533 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:551292 (551.2 KB) TX bytes:272479 (272.4 KB)
##### iwconfig ##########################
eth0 no wireless extensions.
lo no wireless extensions.
##### route #############################
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 192.168.0.1 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
search casaHobbit
##### nm-tool ###########################
NetworkManager Tool
State: connected (global)
- Device: eth0 [Wired connection 1] -------------------------------------------
Type: Wired
Driver: r8169
State: connected
Default: yes
HW Address: <MAC 'eth0' [IF]>
Capabilities:
Carrier Detect: yes
Speed: 100 Mb/s
Wired Properties
Carrier: on
IPv4 Settings:
Address: 192.168.0.111
Prefix: 24 (255.255.255.0)
Gateway: 192.168.0.1
DNS: 192.168.0.1
##### 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/I ragazzi delle ragazze]] (600 root)
[connection] id=I ragazzi delle ragazze | type=802-11-wireless
[802-11-wireless] ssid=I ragazzi delle ragazze | mac-address=<MAC address>
[ipv4] method=auto
[ipv6] method=auto
##### iw reg get ########################
Region: Europe/Rome (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.
##### iwlist scan #######################
eth0 Interface doesn't support scanning.
lo Interface doesn't support scanning.
##### module infos ######################
[brcmsmac]
filename: /lib/modules/3.13.0-36-generic/kernel/drivers/net/wireless/brcm80211/brcmsmac/brcmsmac.ko
firmware: brcm/bcm43xx_hdr-0.fw
firmware: brcm/bcm43xx-0.fw
license: Dual BSD/GPL
description: Broadcom 802.11n wireless LAN driver.
author: Broadcom Corporation
srcversion: 43D6897F7EB716081DF69BE
depends: bcma,mac80211,brcmutil,cfg80211,cordic
intree: Y
vermagic: 3.13.0-36-generic SMP mod_unload modversions
signer: Magrathea: Glacier signing key
sig_key: 38:F3:B6:C6:3A:85:AF:FD:FB:BE:0E:53:33:9D:F8:E0:C6:B6:C9:D5
sig_hashalgo: sha512
[brcmutil]
filename: /lib/modules/3.13.0-36-generic/kernel/drivers/net/wireless/brcm80211/brcmutil/brcmutil.ko
license: Dual BSD/GPL
description: Broadcom 802.11n wireless LAN driver utilities.
author: Broadcom Corporation
srcversion: E81EE4CBB6A7A689150D93D
depends:
intree: Y
vermagic: 3.13.0-36-generic SMP mod_unload modversions
signer: Magrathea: Glacier signing key
sig_key: 38:F3:B6:C6:3A:85:AF:FD:FB:BE:0E:53:33:9D:F8:E0:C6:B6:C9:D5
sig_hashalgo: sha512
[b43]
filename: /lib/modules/3.13.0-36-generic/kernel/drivers/net/wireless/b43/b43.ko
firmware: b43/ucode9.fw
firmware: b43/ucode5.fw
firmware: b43/ucode16_mimo.fw
firmware: b43/ucode15.fw
firmware: b43/ucode14.fw
firmware: b43/ucode13.fw
firmware: b43/ucode11.fw
license: GPL
author: Rafał Miłecki
author: Gábor Stefanik
author: Michael Buesch
author: Stefano Brivio
author: Martin Langer
description: Broadcom B43 wireless driver
srcversion: 7ABBDDCA84C087640B27AE6
depends: bcma,ssb,mac80211,cfg80211
intree: Y
vermagic: 3.13.0-36-generic SMP mod_unload modversions
signer: Magrathea: Glacier signing key
sig_key: 38:F3:B6:C6:3A:85:AF:FD:FB:BE:0E:53:33:9D:F8:E0:C6:B6:C9:D5
sig_hashalgo: sha512
parm: bad_frames_preempt:enable(1) / disable(0) Bad Frames Preemption (int)
parm: fwpostfix:Postfix for the .fw files to load. (string)
parm: hwpctl:Enable hardware-side power control (default off) (int)
parm: nohwcrypt:Disable hardware encryption. (int)
parm: hwtkip:Enable hardware tkip. (int)
parm: qos:Enable QOS support (default on) (int)
parm: btcoex:Enable Bluetooth coexistence (default on) (int)
parm: verbose:Log message verbosity: 0=error, 1=warn, 2=info(default), 3=debug (int)
parm: pio:Use PIO accesses by default: 0=DMA, 1=PIO (int)
parm: allhwsupport:Enable support for all hardware (even it if overlaps with the brcmsmac driver) (int)
[mac80211]
filename: /lib/modules/3.13.0-36-generic/kernel/net/mac80211/mac80211.ko
license: GPL
description: IEEE 802.11 subsystem
srcversion: B822641624778B987844F6F
depends: cfg80211
intree: Y
vermagic: 3.13.0-36-generic SMP mod_unload modversions
signer: Magrathea: Glacier signing key
sig_key: 38:F3:B6:C6:3A:85:AF:FD:FB:BE:0E:53:33:9D:F8:E0:C6:B6:C9:D5
sig_hashalgo: sha512
parm: max_nullfunc_tries:Maximum nullfunc tx tries before disconnecting (reason 4). (int)
parm: max_probe_tries:Maximum probe tries before disconnecting (reason 4). (int)
parm: beacon_loss_count:Number of beacon intervals before we decide beacon was lost. (int)
parm: probe_wait_ms:Maximum time(ms) to wait for probe response before disconnecting (reason 4). (int)
parm: ieee80211_default_rc_algo:Default rate control algorithm for mac80211 to use (charp)
[cfg80211]
filename: /lib/modules/3.13.0-36-generic/kernel/net/wireless/cfg80211.ko
description: wireless configuration support
license: GPL
author: Johannes Berg
srcversion: C2478077E22138832B71659
depends:
intree: Y
vermagic: 3.13.0-36-generic SMP mod_unload modversions
signer: Magrathea: Glacier signing key
sig_key: 38:F3:B6:C6:3A:85:AF:FD:FB:BE:0E:53:33:9D:F8:E0:C6:B6:C9:D5
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)
[ssb]
filename: /lib/modules/3.13.0-36-generic/kernel/drivers/ssb/ssb.ko
license: GPL
description: Sonics Silicon Backplane driver
srcversion: 3DE188310F77C566C2E8CB3
depends:
intree: Y
vermagic: 3.13.0-36-generic SMP mod_unload modversions
signer: Magrathea: Glacier signing key
sig_key: 38:F3:B6:C6:3A:85:AF:FD:FB:BE:0E:53:33:9D:F8:E0:C6:B6:C9:D5
sig_hashalgo: sha512
[bcma]
filename: /lib/modules/3.13.0-36-generic/kernel/drivers/bcma/bcma.ko
license: GPL
description: Broadcom's specific AMBA driver
srcversion: E41B811D88783DD5BC38565
depends:
intree: Y
vermagic: 3.13.0-36-generic SMP mod_unload modversions
signer: Magrathea: Glacier signing key
sig_key: 38:F3:B6:C6:3A:85:AF:FD:FB:BE:0E:53:33:9D:F8:E0:C6:B6:C9:D5
sig_hashalgo: sha512
##### module parameters #################
[b43]
allhwsupport: 0
bad_frames_preempt: 0
btcoex: 1
hwpctl: 0
hwtkip: 0
nohwcrypt: 0
pio: 0
qos: 1
verbose: 2
[mac80211]
beacon_loss_count: 7
ieee80211_default_rc_algo: minstrel_ht
max_nullfunc_tries: 2
max_probe_tries: 5
probe_wait_ms: 500
[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.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
options iwlwifi 11n_disable=1
[/etc/modprobe.d/mlx4.conf]
softdep mlx4_core post: mlx4_en
[/etc/modprobe.d/rtl8723be.conf]
options rtl8723be fwlps=0
##### rc.local ##########################
exit 0
##### pm-utils ##########################
##### udev rules ########################
[/etc/udev/rules.d/70-persistent-net.rules]
# PCI device 0x10ec:0x8168 (r8169)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="<MAC 'eth0' [IF]>", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"
# PCI device 0x14e4:0x4353 (brcmsmac)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="<MAC address>", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="wlan*", NAME="wlan0"
##### dmesg #############################
[ 3503.534359] bcma: bus0: Some GPIOs are still in use.
[ 3503.537985] wlan0: deauthenticating from <MAC address> by local choice (reason=3)
[ 3503.689989] brcmsmac bcma0:0: wl0: brcms_c_watchdog: dead chip
[ 3504.037739] brcmsmac bcma0:0: ops->tx called while down (repeated 3 times)
[ 3504.038196] brcmsmac bcma0:0: brcmsmac: brcms_ops_bss_info_changed: disassociated
[ 3504.038206] brcmsmac bcma0:0: brcms_ops_bss_info_changed: arp filtering: 1 addresses (implement)
[ 3504.038211] brcmsmac bcma0:0: brcms_ops_bss_info_changed: qos enabled: false (implement)
[ 3504.038216] brcmsmac bcma0:0: wl0: brcms_c_wme_setparams : no-clock (repeated 4 times)
########## wireless info END ############