（还发表于 Reddit）
我遇到了一个奇怪的问题。我的机器有时（通常不是）无法连接到我的家庭 wifi。我可以轻松连接到 Android 设备热点。Windows 机器也可以连接。最后，我可以将我的 Android 设备用作 USB wifi 卡。我知道我应该在这里放一些数据，但我不知道应该放什么技术数据，但这里有一些轶事：
- 目前，我的家庭网络没有密码，其名称中也没有空格。
- 根据我的经验，如果我等待足够长的时间（比如一个小时），连接的机会就会更高。
- 这也许是巧合，但通常情况下，当我将手机插入 WiFi 卡后，机器就会立即连接。
- 我有两台联想机器（Edge 13 和 ideapad u330p），都无法连接。Edge 机器目前运行 Arch，但 Ubuntu 也无法与其连接。有趣的是，Lubuntu 的实时 USB 连接到了 Edge 机器上。
我更担心 ideapad 机器，因为 edge 机器很快就会变成通过电缆连接的固定机器。那么，我该如何避免/处理这些事故呢？
我尝试过的事情：
- 更新英特尔固件- 仍然无法连接。我注意到，要停止，
iwlwifi我必须同时停止iwlmvm和iwldvm。
这是链接脚本的输出。我现在在校园里，所以事情可能看起来并不完全像我描述的一样。据我了解，问题出在网卡（intel 7260）上，它有新的固件可用，只是我没有找到激活它的方法。
########## wireless info START ##########
##### release #####
Distributor ID: Ubuntu
Description: Ubuntu 14.04 LTS
Release: 14.04
Codename: trusty
##### kernel #####
Linux twisting 3.13.0-30-generic #54-Ubuntu SMP Mon Jun 9 22:45:01 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
##### lspci #####
02:00.0 Network controller [0280]: Intel Corporation Wireless 7260 [8086:08b2] (rev 73)
Subsystem: Intel Corporation Wireless-N 7260 [8086:4262]
Kernel driver in use: iwlwifi
##### lsusb #####
Bus 001 Device 002: ID 8087:8000 Intel Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 002 Device 004: ID 8087:07dc Intel Corp.
Bus 002 Device 003: ID 0bda:572a Realtek Semiconductor Corp.
Bus 002 Device 007: ID 1058:070a Western Digital Technologies, Inc. My Passport Essential SE
Bus 002 Device 006: ID 18d1:4ee4 Google Inc. Nexus 4 (debug + tether)
Bus 002 Device 005: ID 045e:009d Microsoft Corp. Wireless Optical Desktop 3.0
Bus 002 Device 002: ID 0424:2514 Standard Microsystems Corp. USB 2.0 Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
##### PCMCIA Card Info #####
##### rfkill #####
0: ideapad_wlan: Wireless LAN
Soft blocked: no
Hard blocked: no
1: ideapad_bluetooth: Bluetooth
Soft blocked: no
Hard blocked: no
2: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
3: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
##### lsmod #####
iwlmvm 189774 0
mac80211 626557 1 iwlmvm
iwlwifi 169932 1 iwlmvm
cfg80211 484040 3 iwlwifi,mac80211,iwlmvm
##### iw reg get #####
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
##### interfaces #####
# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback
##### iwconfig #####
wlan0 IEEE 802.11bgn ESSID:off/any
Mode:Managed Access Point: Not-Associated Tx-Power=0 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Power Management:on
##### route #####
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 192.168.42.129 0.0.0.0 UG 0 0 0 usb0
192.168.42.0 0.0.0.0 255.255.255.0 U 1 0 0 usb0
##### resolv.conf #####
nameserver 127.0.1.1
##### nm-tool #####
NetworkManager Tool
State: connected (global)
- Device: wlan0 ----------------------------------------------------------------
Type: 802.11 WiFi
Driver: iwlwifi
State: disconnected
Default: no
HW Address: <MAC address removed>
Capabilities:
Wireless Properties
WEP Encryption: yes
WPA Encryption: yes
WPA2 Encryption: yes
Wireless Access Points
- Device: usb0 [Wired connection 1] -------------------------------------------
Type: Wired
Driver: rndis_host
State: connected
Default: yes
HW Address: <MAC address removed>
Capabilities:
Carrier Detect: yes
Wired Properties
Carrier: on
IPv4 Settings:
Address: 192.168.42.185
Prefix: 24 (255.255.255.0)
Gateway: 192.168.42.129
DNS: 192.168.42.129
##### NetworkManager.state #####
[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true
WimaxEnabled=true
##### NetworkManager.conf #####
[main]
plugins=ifupdown,keyfile,ofono
dns=dnsmasq
[ifupdown]
managed=false
##### iwlist #####
wlan0 No scan results
##### iwlist channel #####
wlan0 13 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
##### modinfo #####
filename: /lib/modules/3.13.0-30-generic/kernel/drivers/net/wireless/iwlwifi/mvm/iwlmvm.ko
license: GPL
author: Copyright(c) 2003-2013 Intel Corporation <[email protected]>
version: in-tree:
description: The new Intel(R) wireless AGN driver for Linux
srcversion: 964B69F7EBC572BE39F5C50
depends: iwlwifi,mac80211,cfg80211
intree: Y
vermagic: 3.13.0-30-generic SMP mod_unload modversions
signer: Magrathea: Glacier signing key
sig_key: <MAC address removed>:20:E4:8D:AC:C7:DB:4A:17:03:31:CC:24:8D:65
sig_hashalgo: sha512
parm: init_dbg:set to true to debug an ASSERT in INIT fw (default: false (bool)
parm: power_scheme:power management scheme: 1-active, 2-balanced, 3-low power, default: 2 (int)
filename: /lib/modules/3.13.0-30-generic/kernel/drivers/net/wireless/iwlwifi/iwlwifi.ko
license: GPL
author: Copyright(c) 2003-2013 Intel Corporation <[email protected]>
version: in-tree:
description: Intel(R) Wireless WiFi driver for Linux
firmware: iwlwifi-100-5.ucode
firmware: iwlwifi-1000-5.ucode
firmware: iwlwifi-135-6.ucode
firmware: iwlwifi-105-6.ucode
firmware: iwlwifi-2030-6.ucode
firmware: iwlwifi-2000-6.ucode
firmware: iwlwifi-5150-2.ucode
firmware: iwlwifi-5000-5.ucode
firmware: iwlwifi-6000g2b-6.ucode
firmware: iwlwifi-6000g2a-5.ucode
firmware: iwlwifi-6050-5.ucode
firmware: iwlwifi-6000-4.ucode
firmware: iwlwifi-3160-7.ucode
firmware: iwlwifi-7260-7.ucode
srcversion: 1E6912E109D5A43B310FB34
alias: pci:v00008086d0000095Asv*sd00005490bc*sc*i*
alias: pci:v00008086d0000095Bsv*sd00005290bc*sc*i*
alias: pci:v00008086d0000095Asv*sd00005590bc*sc*i*
alias: pci:v00008086d0000095Asv*sd00005190bc*sc*i*
alias: pci:v00008086d0000095Asv*sd00005090bc*sc*i*
alias: pci:v00008086d0000095Asv*sd00005420bc*sc*i*
alias: pci:v00008086d0000095Asv*sd0000502Abc*sc*i*
alias: pci:v00008086d0000095Asv*sd00005020bc*sc*i*
alias: pci:v00008086d0000095Asv*sd00009410bc*sc*i*
alias: pci:v00008086d0000095Asv*sd00009310bc*sc*i*
alias: pci:v00008086d0000095Asv*sd00009510bc*sc*i*
alias: pci:v00008086d0000095Asv*sd00009210bc*sc*i*
alias: pci:v00008086d0000095Asv*sd00009112bc*sc*i*
alias: pci:v00008086d0000095Asv*sd00009110bc*sc*i*
alias: pci:v00008086d0000095Asv*sd00009012bc*sc*i*
alias: pci:v00008086d0000095Asv*sd00009010bc*sc*i*
alias: pci:v00008086d0000095Bsv*sd00005202bc*sc*i*
alias: pci:v00008086d0000095Asv*sd00005002bc*sc*i*
alias: pci:v00008086d0000095Bsv*sd00005200bc*sc*i*
alias: pci:v00008086d0000095Asv*sd0000500Abc*sc*i*
alias: pci:v00008086d0000095Asv*sd00005000bc*sc*i*
alias: pci:v00008086d0000095Asv*sd00001010bc*sc*i*
alias: pci:v00008086d0000095Asv*sd00005400bc*sc*i*
alias: pci:v00008086d0000095Asv*sd00005410bc*sc*i*
alias: pci:v00008086d0000095Asv*sd00005012bc*sc*i*
alias: pci:v00008086d0000095Bsv*sd00005210bc*sc*i*
alias: pci:v00008086d0000095Bsv*sd00005302bc*sc*i*
alias: pci:v00008086d0000095Bsv*sd00005310bc*sc*i*
alias: pci:v00008086d0000095Asv*sd0000510Abc*sc*i*
alias: pci:v00008086d0000095Asv*sd00005100bc*sc*i*
alias: pci:v00008086d0000095Asv*sd00005112bc*sc*i*
alias: pci:v00008086d0000095Asv*sd00005110bc*sc*i*
alias: pci:v00008086d0000095Asv*sd00005010bc*sc*i*
alias: pci:v00008086d000008B3sv*sd00008570bc*sc*i*
alias: pci:v00008086d000008B3sv*sd00008470bc*sc*i*
alias: pci:v00008086d000008B4sv*sd00008270bc*sc*i*
alias: pci:v00008086d000008B3sv*sd00008062bc*sc*i*
alias: pci:v00008086d000008B3sv*sd00008060bc*sc*i*
alias: pci:v00008086d000008B3sv*sd00008172bc*sc*i*
alias: pci:v00008086d000008B3sv*sd00008170bc*sc*i*
alias: pci:v00008086d000008B3sv*sd00008072bc*sc*i*
alias: pci:v00008086d000008B3sv*sd00008070bc*sc*i*
alias: pci:v00008086d000008B4sv*sd00000370bc*sc*i*
alias: pci:v00008086d000008B3sv*sd00000472bc*sc*i*
alias: pci:v00008086d000008B3sv*sd00000470bc*sc*i*
alias: pci:v00008086d000008B4sv*sd00000272bc*sc*i*
alias: pci:v00008086d000008B4sv*sd00000270bc*sc*i*
alias: pci:v00008086d000008B3sv*sd00000062bc*sc*i*
alias: pci:v00008086d000008B3sv*sd00000060bc*sc*i*
alias: pci:v00008086d000008B3sv*sd00000172bc*sc*i*
alias: pci:v00008086d000008B3sv*sd00000170bc*sc*i*
alias: pci:v00008086d000008B3sv*sd00000072bc*sc*i*
alias: pci:v00008086d000008B3sv*sd00000070bc*sc*i*
alias: pci:v00008086d000008B1sv*sd0000C420bc*sc*i*
alias: pci:v00008086d000008B2sv*sd0000C220bc*sc*i*
alias: pci:v00008086d000008B1sv*sd0000C02Abc*sc*i*
alias: pci:v00008086d000008B1sv*sd0000C020bc*sc*i*
alias: pci:v00008086d000008B1sv*sd0000C360bc*sc*i*
alias: pci:v00008086d000008B2sv*sd0000C370bc*sc*i*
alias: pci:v00008086d000008B1sv*sd0000C560bc*sc*i*
alias: pci:v00008086d000008B1sv*sd0000C570bc*sc*i*
alias: pci:v00008086d000008B1sv*sd0000C462bc*sc*i*
alias: pci:v00008086d000008B1sv*sd0000C460bc*sc*i*
alias: pci:v00008086d000008B1sv*sd0000C472bc*sc*i*
alias: pci:v00008086d000008B1sv*sd0000C470bc*sc*i*
alias: pci:v00008086d000008B2sv*sd0000C262bc*sc*i*
alias: pci:v00008086d000008B2sv*sd0000C26Abc*sc*i*
alias: pci:v00008086d000008B2sv*sd0000C260bc*sc*i*
alias: pci:v00008086d000008B2sv*sd0000C272bc*sc*i*
alias: pci:v00008086d000008B2sv*sd0000C270bc*sc*i*
alias: pci:v00008086d000008B1sv*sd0000C760bc*sc*i*
alias: pci:v00008086d000008B1sv*sd0000C770bc*sc*i*
alias: pci:v00008086d000008B1sv*sd0000C162bc*sc*i*
alias: pci:v00008086d000008B1sv*sd0000C062bc*sc*i*
alias: pci:v00008086d000008B1sv*sd0000C160bc*sc*i*
alias: pci:v00008086d000008B1sv*sd0000C06Abc*sc*i*
alias: pci:v00008086d000008B1sv*sd0000C060bc*sc*i*
alias: pci:v00008086d000008B1sv*sd0000C170bc*sc*i*
alias: pci:v00008086d000008B1sv*sd0000C072bc*sc*i*
alias: pci:v00008086d000008B1sv*sd0000C070bc*sc*i*
alias: pci:v00008086d000008B1sv*sd00004420bc*sc*i*
alias: pci:v00008086d000008B2sv*sd00004220bc*sc*i*
alias: pci:v00008086d000008B1sv*sd0000402Abc*sc*i*
alias: pci:v00008086d000008B1sv*sd00004020bc*sc*i*
alias: pci:v00008086d000008B1sv*sd00005070bc*sc*i*
alias: pci:v00008086d000008B2sv*sd00004360bc*sc*i*
alias: pci:v00008086d000008B2sv*sd00004370bc*sc*i*
alias: pci:v00008086d000008B1sv*sd00004560bc*sc*i*
alias: pci:v00008086d000008B1sv*sd00004570bc*sc*i*
alias: pci:v00008086d000008B1sv*sd00004A6Cbc*sc*i*
alias: pci:v00008086d000008B1sv*sd00004A6Ebc*sc*i*
alias: pci:v00008086d000008B1sv*sd00004A70bc*sc*i*
alias: pci:v00008086d000008B1sv*sd0000486Ebc*sc*i*
alias: pci:v00008086d000008B1sv*sd00004870bc*sc*i*
alias: pci:v00008086d000008B1sv*sd00004462bc*sc*i*
alias: pci:v00008086d000008B1sv*sd0000446Abc*sc*i*
alias: pci:v00008086d000008B1sv*sd00004460bc*sc*i*
alias: pci:v00008086d000008B1sv*sd00004472bc*sc*i*
alias: pci:v00008086d000008B1sv*sd00004470bc*sc*i*
alias: pci:v00008086d000008B2sv*sd00004262bc*sc*i*
alias: pci:v00008086d000008B2sv*sd0000426Abc*sc*i*
alias: pci:v00008086d000008B2sv*sd00004260bc*sc*i*
alias: pci:v00008086d000008B2sv*sd00004272bc*sc*i*
alias: pci:v00008086d000008B2sv*sd00004270bc*sc*i*
alias: pci:v00008086d000008B1sv*sd00004162bc*sc*i*
alias: pci:v00008086d000008B1sv*sd00004062bc*sc*i*
alias: pci:v00008086d000008B1sv*sd00004160bc*sc*i*
alias: pci:v00008086d000008B1sv*sd0000406Abc*sc*i*
alias: pci:v00008086d000008B1sv*sd00004060bc*sc*i*
alias: pci:v00008086d000008B1sv*sd00004170bc*sc*i*
alias: pci:v00008086d000008B1sv*sd00004072bc*sc*i*
alias: pci:v00008086d000008B1sv*sd00004070bc*sc*i*
alias: pci:v00008086d00000892sv*sd00000462bc*sc*i*
alias: pci:v00008086d00000893sv*sd00000262bc*sc*i*
alias: pci:v00008086d00000892sv*sd00000062bc*sc*i*
alias: pci:v00008086d00000894sv*sd00000822bc*sc*i*
alias: pci:v00008086d00000894sv*sd00000422bc*sc*i*
alias: pci:v00008086d00000895sv*sd00000222bc*sc*i*
alias: pci:v00008086d00000894sv*sd00000022bc*sc*i*
alias: pci:v00008086d0000088Fsv*sd00005260bc*sc*i*
alias: pci:v00008086d0000088Esv*sd00004860bc*sc*i*
alias: pci:v00008086d0000088Esv*sd0000446Abc*sc*i*
alias: pci:v00008086d0000088Esv*sd00004460bc*sc*i*
alias: pci:v00008086d0000088Fsv*sd0000426Abc*sc*i*
alias: pci:v00008086d0000088Fsv*sd00004260bc*sc*i*
alias: pci:v00008086d0000088Esv*sd0000406Abc*sc*i*
alias: pci:v00008086d0000088Esv*sd00004060bc*sc*i*
alias: pci:v00008086d00000887sv*sd00004462bc*sc*i*
alias: pci:v00008086d00000888sv*sd00004262bc*sc*i*
alias: pci:v00008086d00000887sv*sd00004062bc*sc*i*
alias: pci:v00008086d00000890sv*sd00004822bc*sc*i*
alias: pci:v00008086d00000890sv*sd00004422bc*sc*i*
alias: pci:v00008086d00000891sv*sd00004222bc*sc*i*
alias: pci:v00008086d00000890sv*sd00004022bc*sc*i*
alias: pci:v00008086d00000896sv*sd00005027bc*sc*i*
alias: pci:v00008086d00000896sv*sd00005025bc*sc*i*
alias: pci:v00008086d00000897sv*sd00005017bc*sc*i*
alias: pci:v00008086d00000897sv*sd00005015bc*sc*i*
alias: pci:v00008086d00000896sv*sd00005007bc*sc*i*
alias: pci:v00008086d00000896sv*sd00005005bc*sc*i*
alias: pci:v00008086d000008AEsv*sd00001027bc*sc*i*
alias: pci:v00008086d000008AEsv*sd00001025bc*sc*i*
alias: pci:v00008086d000008AFsv*sd00001017bc*sc*i*
alias: pci:v00008086d000008AFsv*sd00001015bc*sc*i*
alias: pci:v00008086d000008AEsv*sd00001007bc*sc*i*
alias: pci:v00008086d000008AEsv*sd00001005bc*sc*i*
alias: pci:v00008086d00000084sv*sd00001316bc*sc*i*
alias: pci:v00008086d00000084sv*sd00001216bc*sc*i*
alias: pci:v00008086d00000083sv*sd00001326bc*sc*i*
alias: pci:v00008086d00000083sv*sd00001226bc*sc*i*
alias: pci:v00008086d00000083sv*sd00001306bc*sc*i*
alias: pci:v00008086d00000083sv*sd00001206bc*sc*i*
alias: pci:v00008086d00000084sv*sd00001315bc*sc*i*
alias: pci:v00008086d00000084sv*sd00001215bc*sc*i*
alias: pci:v00008086d00000083sv*sd00001325bc*sc*i*
alias: pci:v00008086d00000083sv*sd00001225bc*sc*i*
alias: pci:v00008086d00000083sv*sd00001305bc*sc*i*
alias: pci:v00008086d00000083sv*sd00001205bc*sc*i*
alias: pci:v00008086d00000886sv*sd00001317bc*sc*i*
alias: pci:v00008086d00000886sv*sd00001315bc*sc*i*
alias: pci:v00008086d00000885sv*sd00001327bc*sc*i*
alias: pci:v00008086d00000885sv*sd00001325bc*sc*i*
alias: pci:v00008086d00000885sv*sd00001307bc*sc*i*
alias: pci:v00008086d00000885sv*sd00001305bc*sc*i*
alias: pci:v00008086d00000089sv*sd00001316bc*sc*i*
alias: pci:v00008086d00000089sv*sd00001311bc*sc*i*
alias: pci:v00008086d00000087sv*sd00001326bc*sc*i*
alias: pci:v00008086d00000087sv*sd00001321bc*sc*i*
alias: pci:v00008086d00000087sv*sd00001306bc*sc*i*
alias: pci:v00008086d00000087sv*sd00001301bc*sc*i*
alias: pci:v00008086d00000091sv*sd00005226bc*sc*i*
alias: pci:v00008086d00000091sv*sd00005225bc*sc*i*
alias: pci:v00008086d00000091sv*sd00005221bc*sc*i*
alias: pci:v00008086d00000091sv*sd00005207bc*sc*i*
alias: pci:v00008086d00000091sv*sd00005206bc*sc*i*
alias: pci:v00008086d00000091sv*sd00005205bc*sc*i*
alias: pci:v00008086d00000091sv*sd00005201bc*sc*i*
alias: pci:v00008086d00000090sv*sd00005216bc*sc*i*
alias: pci:v00008086d00000090sv*sd00005215bc*sc*i*
alias: pci:v00008086d00000090sv*sd00005211bc*sc*i*
alias: pci:v00008086d0000008Bsv*sd00005317bc*sc*i*
alias: pci:v00008086d0000008Bsv*sd00005315bc*sc*i*
alias: pci:v00008086d0000008Asv*sd00005327bc*sc*i*
alias: pci:v00008086d0000008Asv*sd00005325bc*sc*i*
alias: pci:v00008086d0000008Asv*sd00005307bc*sc*i*
alias: pci:v00008086d0000008Asv*sd00005305bc*sc*i*
alias: pci:v00008086d00000082sv*sd00001305bc*sc*i*
alias: pci:v00008086d00000082sv*sd00001304bc*sc*i*
alias: pci:v00008086d00000082sv*sd00004820bc*sc*i*
alias: pci:v00008086d00000085sv*sd0000C228bc*sc*i*
alias: pci:v00008086d00000085sv*sd0000C220bc*sc*i*
alias: pci:v00008086d00000082sv*sd0000C020bc*sc*i*
alias: pci:v00008086d00000085sv*sd00001316bc*sc*i*
alias: pci:v00008086d00000085sv*sd00001318bc*sc*i*
alias: pci:v00008086d00000085sv*sd00001311bc*sc*i*
alias: pci:v00008086d00000082sv*sd00001328bc*sc*i*
alias: pci:v00008086d00000082sv*sd00001326bc*sc*i*
alias: pci:v00008086d00000082sv*sd00001321bc*sc*i*
alias: pci:v00008086d00000082sv*sd00001308bc*sc*i*
alias: pci:v00008086d00000082sv*sd00001307bc*sc*i*
alias: pci:v00008086d00000082sv*sd00001306bc*sc*i*
alias: pci:v00008086d00000082sv*sd00001301bc*sc*i*
alias: pci:v00008086d00004239sv*sd00001316bc*sc*i*
alias: pci:v00008086d00004239sv*sd00001311bc*sc*i*
alias: pci:v00008086d00004238sv*sd00001118bc*sc*i*
alias: pci:v00008086d00004238sv*sd00001111bc*sc*i*
alias: pci:v00008086d0000422Csv*sd00001326bc*sc*i*
alias: pci:v00008086d0000422Csv*sd00001321bc*sc*i*
alias: pci:v00008086d0000422Csv*sd00001307bc*sc*i*
alias: pci:v00008086d0000422Csv*sd00001306bc*sc*i*
alias: pci:v00008086d0000422Csv*sd00001301bc*sc*i*
alias: pci:v00008086d0000422Bsv*sd00001128bc*sc*i*
alias: pci:v00008086d0000422Bsv*sd00001121bc*sc*i*
alias: pci:v00008086d0000422Bsv*sd00001108bc*sc*i*
alias: pci:v00008086d0000422Bsv*sd00001101bc*sc*i*
alias: pci:v00008086d0000423Dsv*sd00001316bc*sc*i*
alias: pci:v00008086d0000423Dsv*sd00001216bc*sc*i*
alias: pci:v00008086d0000423Dsv*sd00001311bc*sc*i*
alias: pci:v00008086d0000423Dsv*sd00001211bc*sc*i*
alias: pci:v00008086d0000423Csv*sd00001326bc*sc*i*
alias: pci:v00008086d0000423Csv*sd00001321bc*sc*i*
alias: pci:v00008086d0000423Csv*sd00001221bc*sc*i*
alias: pci:v00008086d0000423Csv*sd00001306bc*sc*i*
alias: pci:v00008086d0000423Csv*sd00001206bc*sc*i*
alias: pci:v00008086d0000423Csv*sd00001301bc*sc*i*
alias: pci:v00008086d0000423Csv*sd00001201bc*sc*i*
alias: pci:v00008086d0000423Bsv*sd00001011bc*sc*i*
alias: pci:v00008086d0000423Asv*sd00001021bc*sc*i*
alias: pci:v00008086d0000423Asv*sd00001001bc*sc*i*
alias: pci:v00008086d00004236sv*sd00001114bc*sc*i*
alias: pci:v00008086d00004236sv*sd00001014bc*sc*i*
alias: pci:v00008086d00004236sv*sd00001111bc*sc*i*
alias: pci:v00008086d00004236sv*sd00001011bc*sc*i*
alias: pci:v00008086d00004235sv*sd00001104bc*sc*i*
alias: pci:v00008086d00004235sv*sd00001004bc*sc*i*
alias: pci:v00008086d00004235sv*sd00001101bc*sc*i*
alias: pci:v00008086d00004235sv*sd00001001bc*sc*i*
alias: pci:v00008086d00004235sv*sd00001124bc*sc*i*
alias: pci:v00008086d00004235sv*sd00001024bc*sc*i*
alias: pci:v00008086d00004235sv*sd00001121bc*sc*i*
alias: pci:v00008086d00004235sv*sd00001021bc*sc*i*
alias: pci:v00008086d00004237sv*sd00001316bc*sc*i*
alias: pci:v00008086d00004237sv*sd00001216bc*sc*i*
alias: pci:v00008086d00004237sv*sd00001315bc*sc*i*
alias: pci:v00008086d00004237sv*sd00001215bc*sc*i*
alias: pci:v00008086d00004237sv*sd00001314bc*sc*i*
alias: pci:v00008086d00004237sv*sd00001214bc*sc*i*
alias: pci:v00008086d00004237sv*sd00001311bc*sc*i*
alias: pci:v00008086d00004237sv*sd00001211bc*sc*i*
alias: pci:v00008086d00004232sv*sd00001326bc*sc*i*
alias: pci:v00008086d00004232sv*sd00001226bc*sc*i*
alias: pci:v00008086d00004232sv*sd00001325bc*sc*i*
alias: pci:v00008086d00004232sv*sd00001225bc*sc*i*
alias: pci:v00008086d00004232sv*sd00001324bc*sc*i*
alias: pci:v00008086d00004232sv*sd00001224bc*sc*i*
alias: pci:v00008086d00004232sv*sd00001321bc*sc*i*
alias: pci:v00008086d00004232sv*sd00001221bc*sc*i*
alias: pci:v00008086d00004232sv*sd00001306bc*sc*i*
alias: pci:v00008086d00004232sv*sd00001206bc*sc*i*
alias: pci:v00008086d00004232sv*sd00001305bc*sc*i*
alias: pci:v00008086d00004232sv*sd00001205bc*sc*i*
alias: pci:v00008086d00004232sv*sd00001304bc*sc*i*
alias: pci:v00008086d00004232sv*sd00001204bc*sc*i*
alias: pci:v00008086d00004232sv*sd00001301bc*sc*i*
alias: pci:v00008086d00004232sv*sd00001201bc*sc*i*
depends: cfg80211
intree: Y
vermagic: 3.13.0-30-generic SMP mod_unload modversions
signer: Magrathea: Glacier signing key
sig_key: <MAC address removed>:20:E4:8D:AC:C7:DB:4A:17:03:31:CC:24:8D:65
sig_hashalgo: sha512
parm: swcrypto:using crypto in software (default 0 [hardware]) (int)
parm: 11n_disable:disable 11n functionality, bitmap: 1: full, 2: disable agg TX, 4: disable agg RX, 8 enable agg TX (uint)
parm: amsdu_size_8K:enable 8K amsdu size (default 0) (int)
parm: fw_restart:restart firmware in case of error (default true) (bool)
parm: antenna_coupling:specify antenna coupling in dB (defualt: 0 dB) (int)
parm: wd_disable:Disable stuck queue watchdog timer 0=system default, 1=disable, 2=enable (default: 0) (int)
parm: nvm_file:NVM file name (charp)
parm: bt_coex_active:enable wifi/bt co-exist (default: enable) (bool)
parm: led_mode:0=system default, 1=On(RF On)/Off(RF Off), 2=blinking, 3=Off (default: 0) (int)
parm: power_save:enable WiFi power management (default: disable) (bool)
parm: power_level:default power save level (range from 1 - 5, default: 1) (int)
##### modules #####
lp
rtc
##### blacklist #####
[/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/fbdev-blacklist.conf]
blacklist arkfb
blacklist aty128fb
blacklist atyfb
blacklist radeonfb
blacklist cirrusfb
blacklist cyber2000fb
blacklist gx1fb
blacklist gxfb
blacklist kyrofb
blacklist matroxfb_base
blacklist mb862xxfb
blacklist neofb
blacklist nvidiafb
blacklist pm2fb
blacklist pm3fb
blacklist s3fb
blacklist savagefb
blacklist sisfb
blacklist tdfxfb
blacklist tridentfb
blacklist viafb
blacklist vt8623fb
##### udev rules #####
# PCI device 0x8086:0x08b2 (iwlwifi)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="<MAC address removed>", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="wlan*", NAME="wlan0"
##### dmesg #####
[ 1.694403] psmouse serio1: elantech: assuming hardware version 4 (with firmware version 0x461f01)
[ 5.421902] iwlwifi 0000:02:00.0: irq 62 for MSI/MSI-X
[ 5.503332] iwlwifi 0000:02:00.0: Direct firmware load failed with error -2
[ 5.503333] iwlwifi 0000:02:00.0: Falling back to user helper
[ 5.521430] Bluetooth: hci0: Intel Bluetooth firmware file: intel/ibt-hw-37.7.10-fw-1.80.2.3.d.bseq
[ 5.624522] Bluetooth: hci0: Intel Bluetooth firmware patch completed and activated
[ 5.927671] iwlwifi 0000:02:00.0: loaded firmware version 22.1.7.0 op_mode iwlmvm
[ 6.534354] iwlwifi 0000:02:00.0: Detected Intel(R) Wireless N 7260, REV=0x144
[ 6.534403] iwlwifi 0000:02:00.0: L1 Disabled; Enabling L0S
[ 6.534616] iwlwifi 0000:02:00.0: L1 Disabled; Enabling L0S
[ 6.770451] ieee80211 phy0: Selected rate control algorithm 'iwl-mvm-rs'
[ 12.058643] iwlwifi 0000:02:00.0: L1 Disabled; Enabling L0S
[ 12.058857] iwlwifi 0000:02:00.0: L1 Disabled; Enabling L0S
[ 12.070328] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 12.070662] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
########## wireless info END ############
答案1
在我自己的英特尔无线网卡出现无线问题后，我进行了一些研究，找到了一些常见的修复方法。我自己也尝试过这些方法，我的笔记本电脑的稳定性要好得多。
我不记得我关注的具体网站，但谷歌搜索一下就唤起了我的记忆，以下是我做的两件事（来自http://itsfoss.com/speed-up-slow-wifi-connection-ubuntu/）
1）禁用802.11n
sudo rmmod iwlwifi
sudo modprobe iwlwifi 11n_disable=1
这将使更改一直持续到下次重新启动。测试它，看看您是否与无线 AP 建立了更稳定的连接。如果是这样，您可以通过执行以下操作使其永久生效（您可以随时通过编辑该文件并删除它添加的行来恢复此更改）
sudo su
echo "options iwlwifi 11n_disable=1" >> /etc/modprobe.d/iwlwifi.conf
2）禁用无线网卡电源功能
sudo iwconfig
它会告诉你无线设备的名称。通常应该是 wlan0。现在使用以下命令：
sudo iwconfig wlan0 power off
答案2
我的 Intel 3160ac 也遇到了类似的问题。使用 wavemon 我发现重试次数非常多，这可能是频繁断线的原因。请遵循 tgm4883 所说的内容，但要添加：
$echo "options iwlmvm power_scheme=1" | sudo tee /etc/modprobe.d/iwlmvm.conf
$echo "options iwlwifi bt_coex_active=N swcrypto=1 11n_disable=1" | sudo tee /etc/modprobe.d/iwlwifi.conf
$sudo reboot
如果问题没有解决，我建议看看这个错误报告： https://bugs.launchpad.net/ubuntu/+source/linux-firmware/+bug/1354975
本质上安装内核 3.13.0-37_3.13.0-37.64+iwlltr0001：http://people.canonical.com/~sforshee/iwl-ltr/trusty/
并安装linux-firmware 1.127.7。
然后，如果不起作用，您可以再次尝试我上面写的命令。