我在这里发帖希望能得到帮助解决我在 Ubuntu 15.04 上使用无线 AC 7620 的英特尔 NUC 上的 wifi 连接问题。
我在下面复制了无线信息脚本的输出，但之前有一些关于我遇到的问题的简短历史和描述。
大约一年前，我组装了 NUC，之后直接安装了 Ubuntu 14.04，用作媒体中心。一切都运行正常，wifi 连接快速稳定。Ubuntu 14.10 发布后，我没有升级（我想继续使用 LTS 版本），而是继续进行常规更新。
然后有一天（大概是 2014 年 10 月/11 月左右），一切都出错了：WiFi 连接经常丢失，有时每隔几分钟就会丢失一次，传输速率降得很低，需要几分钟才能显示 Google 主页，连接丢失并且永远不会恢复。
我浏览了几个论坛/网站/wiki，尝试了很多方法。我认为最好的方法是使用 iwconfig 禁用电源管理。禁用/启用 wifi 和/或网络有时也有效。升级到较新的 Ubuntu 版本有时会改善这种情况，有时则不会。
今天，我回家后想再次使用我的 NUC，但情况比以前更糟了。症状如下：
- NUC 在启动时快速连接到我的 WiFi 网络。
- 信号强度很好，我认为大约为 75%。
- 连接稳定。
- 无法访问任何网站。例如，如果我尝试访问 Google 主页，Firefox 滚轮会一直转动，但什么也没有显示出来。
- 尝试使用 apt-get update 进行更新确实会触发一些数据传输，但传输速率非常低（我在五分钟后取消了它，但还没有完成）。
我的路由器/互联网接入是 Freebox v5，但我认为问题确实来自 NUC/Ubuntu，因为我也在 wifi 上运行 Windows 7 桌面和 Debian Jessie 上网本，它们都没有这些问题。
在此先感谢您的帮助 ！
任何额外的命令行或测试，请告诉我，我会尽快完成！
注意：我从 iwlist 扫描中删除了所有不属于我的 wifi 网络，以保持在 30000 个字符的限制以下。
########## wireless info START ##########
Report from: 22 Jul 2015 21:14 CEST +0200
Booted last: 22 Jul 2015 20:53 CEST +0200
Script from: 14 Jul 2015 17:04 UTC +0000
##### release ###########################
Distributor ID: Ubuntu
Description: Ubuntu 15.04
Release: 15.04
Codename: vivid
##### kernel ############################
Linux 3.19.0-22-generic #22-Ubuntu SMP Tue Jun 16 17:15:15 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
Parameters: ro, quiet, splash, vt.handoff=7
##### desktop ###########################
Ubuntu
##### lspci #############################
00:19.0 Ethernet controller [0200]: Intel Corporation Ethernet Connection I218-V [8086:1559] (rev 04)
Subsystem: Intel Corporation Device [8086:2054]
Kernel driver in use: e1000e
02:00.0 Network controller [0280]: Intel Corporation Wireless 7260 [8086:08b1] (rev 6b)
Subsystem: Intel Corporation Dual Band Wireless-AC 7260 [8086:4170]
Kernel driver in use: iwlwifi
##### lsusb #############################
Bus 003 Device 002: ID 8087:8000 Intel Corp.
Bus 003 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 003: ID 8087:07dc Intel Corp.
Bus 001 Device 005: ID 046d:c71f Logitech, Inc. diNovo Mini Wireless Keyboard
Bus 001 Device 004: ID 046d:c71e Logitech, Inc.
Bus 001 Device 002: ID 046d:0b07 Logitech, Inc.
Bus 001 Device 006: ID 0d7d:1900 Phison Electronics Corp. USB Thumb Drive
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
##### lsmod #############################
iwlmvm 278528 0
mac80211 724992 1 iwlmvm
iwlwifi 196608 1 iwlmvm
cfg80211 540672 3 iwlwifi,mac80211,iwlmvm
snd_soc_rt5640 94208 0
snd_soc_rl6231 16384 1 snd_soc_rt5640
snd_soc_core 196608 1 snd_soc_rt5640
snd_pcm 106496 7 snd_soc_rt5640,snd_soc_core,snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel,snd_hda_controller,snd_pcm_dmaengine
##### 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)
Interrupt:20 Memory:f7d00000-f7d20000
wlan0 Link encap:Ethernet HWaddr <MAC 'wlan0' [IF]>
inet addr:192.168.0.51 Bcast:192.168.0.255 Mask:255.255.255.0
inet6 addr: fe80::<IP6 'wlan0' [IF]>/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:2269 errors:0 dropped:0 overruns:0 frame:0
TX packets:2210 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1637945 (1.6 MB) TX bytes:258557 (258.5 KB)
##### iwconfig ##########################
eth0 no wireless extensions.
lo no wireless extensions.
wlan0 IEEE 802.11abgn ESSID:"TXNPK188"
Mode:Managed Frequency:2.472 GHz Access Point: <MAC 'TXNPK188' [AC1]>
Bit Rate=180 Mb/s Tx-Power=22 dBm
Retry short limit:7 RTS thr:off Fragment thr:off
Power Management:on
Link Quality=61/70 Signal level=-49 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:199 Missed beacon:0
##### 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 1024 0 0 wlan0
169.254.0.0 0.0.0.0 255.255.0.0 U 1000 0 0 wlan0
192.168.0.0 0.0.0.0 255.255.255.0 U 0 0 0 wlan0
##### resolv.conf #######################
nameserver 127.0.1.1
##### network managers ##################
Installed:
NetworkManager
Running:
root 720 1 0 20:53 ? 00:00:00 /usr/sbin/NetworkManager --no-daemon
##### NetworkManager info ###############
GENERAL.DEVICE: wlan0
GENERAL.TYPE: wifi
GENERAL.VENDOR: Intel Corporation
GENERAL.PRODUCT: Wireless 7260 (Dual Band Wireless-AC 7260)
GENERAL.DRIVER: iwlwifi
GENERAL.DRIVER-VERSION: 3.19.0-22-generic
GENERAL.FIRMWARE-VERSION: 25.17.12.0
GENERAL.HWADDR: <MAC 'wlan0' [IF]>
GENERAL.MTU: 1500
GENERAL.STATE: 100 (connected)
GENERAL.REASON: 0 (No reason given)
GENERAL.UDI: /sys/devices/pci0000:00/0000:00:1c.3/0000:02:00.0/net/wlan0
GENERAL.IP-IFACE: wlan0
GENERAL.NM-MANAGED: yes
GENERAL.AUTOCONNECT: yes
GENERAL.FIRMWARE-MISSING: no
GENERAL.CONNECTION: TXNPK188
GENERAL.CON-UUID: 55085fca-cbd0-4126-bdda-1d6e4f39c6bd
GENERAL.CON-PATH: /org/freedesktop/NetworkManager/ActiveConnection/2
CAPABILITIES.CARRIER-DETECT: no
CAPABILITIES.SPEED: 180 Mb/s
CONNECTIONS.AVAILABLE-CONNECTION-PATHS: /org/freedesktop/NetworkManager/Settings/{0}
CONNECTIONS.AVAILABLE-CONNECTIONS[1]: 55085fca-cbd0-4126-bdda-1d6e4f39c6bd | TXNPK188
WIFI-PROPERTIES.WEP: yes
WIFI-PROPERTIES.WPA: yes
WIFI-PROPERTIES.WPA2: yes
WIFI-PROPERTIES.TKIP: yes
WIFI-PROPERTIES.CCMP: yes
WIFI-PROPERTIES.AP: yes
WIFI-PROPERTIES.ADHOC: yes
IP4.ADDRESS[1]: ip = 192.168.0.51/24, gw = 192.168.0.254
IP4.ROUTE[1]: dst = 169.254.0.0/16, nh = 0.0.0.0, mt = 1000
IP4.DNS[1]: 212.27.40.241
IP4.DNS[2]: 212.27.40.240
IP6.ADDRESS[1]: ip = fe80::<IP6 'wlan0' [IF]>/64, gw = ::
GENERAL.DEVICE: eth0
GENERAL.TYPE: ethernet
GENERAL.VENDOR: Intel Corporation
GENERAL.PRODUCT: Ethernet Connection I218-V
GENERAL.DRIVER: e1000e
GENERAL.DRIVER-VERSION: 2.3.2-k
GENERAL.FIRMWARE-VERSION: 0.6-4
GENERAL.HWADDR: <MAC 'eth0' [IF]>
GENERAL.MTU: 1500
GENERAL.STATE: 20 (unavailable)
GENERAL.REASON: 2 (Device is now managed)
GENERAL.UDI: /sys/devices/pci0000:00/0000:00:19.0/net/eth0
GENERAL.IP-IFACE:
GENERAL.NM-MANAGED: yes
GENERAL.AUTOCONNECT: yes
GENERAL.FIRMWARE-MISSING: no
GENERAL.CONNECTION: --
GENERAL.CON-UUID: --
GENERAL.CON-PATH: --
CAPABILITIES.CARRIER-DETECT: yes
CAPABILITIES.SPEED: unknown
CONNECTIONS.AVAILABLE-CONNECTION-PATHS:
WIRED-PROPERTIES.CARRIER: off
SSID BSSID MODE CHAN FREQ RATE SIGNAL BARS SECURITY ACTIVE *
FreeWifi_secure <MAC 'FreeWifi_secure' [AC9]> Infra 13 2472 MHz 54 Mbit/s 90 ▂▄▆█ WPA1 802.1X no
-- <MAC '--' [AN2]> Infra 13 2472 MHz 54 Mbit/s 87 ▂▄▆█ WPA2 no
FreeWifi_secure <MAC 'FreeWifi_secure' [AC7]> Infra 8 2447 MHz 54 Mbit/s 52 ▂▄__ WPA2 802.1X no
FreeWifi <MAC 'FreeWifi' [AC8]> Infra 13 2472 MHz 54 Mbit/s 89 ▂▄▆█ -- no
FreeWifi <MAC 'FreeWifi' [AN5]> Infra 8 2447 MHz 54 Mbit/s 50 ▂▄__ -- no
TXNPK188 <MAC 'TXNPK188' [AC1]> Infra 13 2472 MHz 54 Mbit/s 71 ▂▄▆_ WPA1 yes *
##### 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/TXNPK188]] (600 root)
[connection] id=TXNPK188 | type=802-11-wireless
[802-11-wireless] ssid=TXNPK188 | mac-address=<MAC 'wlan0' [IF]>
[ipv4] method=manual
[ipv6] method=auto
##### iw reg get ########################
Region: Europe/Paris (based on set time zone)
country 00: DFS-UNSET
(2402 - 2472 @ 40), (3, 20), (N/A)
(2457 - 2482 @ 40), (3, 20), (N/A), NO-IR
(2474 - 2494 @ 20), (3, 20), (N/A), NO-OFDM, NO-IR
(5170 - 5250 @ 40), (3, 20), (N/A), NO-IR
(5735 - 5835 @ 40), (3, 20), (N/A), NO-IR
##### 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 12 : 2.467 GHz
Channel 13 : 2.472 GHz
Channel 36 : 5.18 GHz
Channel 40 : 5.2 GHz
Channel 44 : 5.22 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 120 : 5.6 GHz
Channel 124 : 5.62 GHz
Channel 128 : 5.64 GHz
Channel 132 : 5.66 GHz
Channel 136 : 5.68 GHz
Channel 140 : 5.7 GHz
Current Frequency:2.472 GHz (Channel 13)
##### iwlist scan #######################
eth0 Interface doesn't support scanning.
lo Interface doesn't support scanning.
Channel occupancy:
5 APs on Frequency:2.412 GHz (Channel 1)
1 APs on Frequency:2.447 GHz (Channel 8)
3 APs on Frequency:2.472 GHz (Channel 13)
wlan0 Scan completed :
Cell 01 - Address: <MAC 'TXNPK188' [AC1]>
Channel:13
Frequency:2.472 GHz (Channel 13)
Quality=66/70 Signal level=-44 dBm
Encryption key:on
ESSID:"TXNPK188"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 9 Mb/s
18 Mb/s; 36 Mb/s; 54 Mb/s
Bit Rates:6 Mb/s; 12 Mb/s; 24 Mb/s; 48 Mb/s
Mode:Master
Extra:tsf=00000001ced635cc
Extra: Last beacon: 52ms ago
IE: WPA Version 1
Group Cipher : TKIP
Pairwise Ciphers (2) : TKIP CCMP
Authentication Suites (1) : PSK
##### module infos ######################
[iwlmvm]
filename: /lib/modules/3.19.0-22-generic/kernel/drivers/net/wireless/iwlwifi/mvm/iwlmvm.ko
license: GPL
author: Copyright(c) 2003- 2014 Intel Corporation <[email protected]>
version: in-tree:
description: The new Intel(R) wireless AGN driver for Linux
srcversion: 84DEF0B250352D8D14C9DD1
depends: iwlwifi,mac80211,cfg80211
intree: Y
vermagic: 3.19.0-22-generic SMP mod_unload modversions
signer: Magrathea: Glacier signing key
sig_key: C7:D4:40:34:4C:0B:3A:C2:A3:CE:C2:AE:B9:72:2E:CF:6C:AE:73:91
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)
[mac80211]
filename: /lib/modules/3.19.0-22-generic/kernel/net/mac80211/mac80211.ko
license: GPL
description: IEEE 802.11 subsystem
srcversion: 88CC41451370601B0D885E4
depends: cfg80211
intree: Y
vermagic: 3.19.0-22-generic SMP mod_unload modversions
signer: Magrathea: Glacier signing key
sig_key: C7:D4:40:34:4C:0B:3A:C2:A3:CE:C2:AE:B9:72:2E:CF:6C:AE:73:91
sig_hashalgo: sha512
parm: minstrel_vht_only:Use only VHT rates when VHT is supported by sta. (bool)
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)
[iwlwifi]
filename: /lib/modules/3.19.0-22-generic/kernel/drivers/net/wireless/iwlwifi/iwlwifi.ko
license: GPL
author: Copyright(c) 2003- 2014 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-7265D-10.ucode
firmware: iwlwifi-7265-10.ucode
firmware: iwlwifi-3165-10.ucode
firmware: iwlwifi-3160-10.ucode
firmware: iwlwifi-7260-10.ucode
firmware: iwlwifi-8000-10.ucode
srcversion: 97E94F4448EBBA00BC45455
depends: cfg80211
intree: Y
vermagic: 3.19.0-22-generic SMP mod_unload modversions
signer: Magrathea: Glacier signing key
sig_key: C7:D4:40:34:4C:0B:3A:C2:A3:CE:C2:AE:B9:72:2E:CF:6C:AE:73:91
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 (default: 0 dB) (int)
parm: wd_disable:Disable stuck queue watchdog timer 0=system default, 1=disable (default: 1) (int)
parm: nvm_file:NVM file name (charp)
parm: uapsd_disable:disable U-APSD functionality (default: Y) (bool)
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)
parm: fw_monitor:firmware monitor - to debug FW (default: false - needs lots of memory) (bool)
[cfg80211]
filename: /lib/modules/3.19.0-22-generic/kernel/net/wireless/cfg80211.ko
description: wireless configuration support
license: GPL
author: Johannes Berg
srcversion: E61EB836E1B33C2A2918485
depends:
intree: Y
vermagic: 3.19.0-22-generic SMP mod_unload modversions
signer: Magrathea: Glacier signing key
sig_key: C7:D4:40:34:4C:0B:3A:C2:A3:CE:C2:AE:B9:72:2E:CF:6C:AE:73:91
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 #################
[iwlmvm]
init_dbg: N
power_scheme: 2
[mac80211]
beacon_loss_count: 7
ieee80211_default_rc_algo: minstrel_ht
max_nullfunc_tries: 2
max_probe_tries: 5
minstrel_vht_only: Y
probe_wait_ms: 500
[iwlwifi]
11n_disable: 0
amsdu_size_8K: 0
antenna_coupling: 0
bt_coex_active: Y
fw_monitor: N
fw_restart: Y
led_mode: 0
nvm_file: (null)
power_level: 0
power_save: N
swcrypto: 0
uapsd_disable: Y
wd_disable: 1
[cfg80211]
cfg80211_disable_40mhz_24ghz: N
ieee80211_regdom: 00
##### /etc/modules ######################
lp
##### 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
[/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 0x8086:0x1559 (e1000e)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="<MAC 'eth0' [IF]>", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"
# PCI device 0x8086:0x08b1 (iwlwifi)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="<MAC 'wlan0' [IF]>", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="wlan*", NAME="wlan0"
##### dmesg #############################
[ 3.464732] Bluetooth: hci0: Intel Bluetooth firmware patch completed and activated
[ 3.518660] ieee80211 phy0: Selected rate control algorithm 'iwl-mvm-rs'
[ 4.460499] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled (repeated 2 times)
[ 7.916726] wlan0: authenticate with <MAC 'TXNPK188' [AC1]>
[ 7.920483] wlan0: send auth to <MAC 'TXNPK188' [AC1]> (try 1/3)
[ 7.922310] wlan0: authenticated
[ 7.928438] wlan0: associate with <MAC 'TXNPK188' [AC1]> (try 1/3)
[ 7.942641] wlan0: RX AssocResp from <MAC 'TXNPK188' [AC1]> (capab=0x411 status=0 aid=2)
[ 7.943963] wlan0: associated
[ 359.516348] wlan0: deauthenticating from <MAC 'TXNPK188' [AC1]> by local choice (Reason: 3=DEAUTH_LEAVING)
[ 359.531246] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 367.152590] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled (repeated 2 times)
[ 370.627806] wlan0: authenticate with <MAC 'TXNPK188' [AC1]>
[ 370.631010] wlan0: send auth to <MAC 'TXNPK188' [AC1]> (try 1/3)
[ 370.632766] wlan0: authenticated
[ 370.633913] wlan0: associate with <MAC 'TXNPK188' [AC1]> (try 1/3)
[ 370.644779] wlan0: RX AssocResp from <MAC 'TXNPK188' [AC1]> (capab=0x411 status=0 aid=2)
[ 370.655915] wlan0: associated
[ 495.292650] wlan0: deauthenticating from <MAC 'TXNPK188' [AC1]> by local choice (Reason: 3=DEAUTH_LEAVING)
[ 504.186814] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled (repeated 2 times)
[ 507.569951] wlan0: authenticate with <MAC 'TXNPK188' [AC1]>
[ 507.573064] wlan0: send auth to <MAC 'TXNPK188' [AC1]> (try 1/3)
[ 507.575888] wlan0: authenticated
[ 507.576642] wlan0: associate with <MAC 'TXNPK188' [AC1]> (try 1/3)
[ 507.585643] wlan0: RX AssocResp from <MAC 'TXNPK188' [AC1]> (capab=0x411 status=0 aid=2)
[ 507.586893] wlan0: associated
########## wireless info END ############
答案1
我也有一台 NUC，当我将 BIOS 更新到最新版本时，发现几个小问题得到了修复。我建议您也这样做。
接下来，检查路由器中的设置。首选 WPA2-AES；而不是任何 WPA 和 WPA2 混合模式，当然也不是 TKIP。其次，如果您的路由器能够实现 N 速度，那么使用 2.4 GHz 频段的 20 MHz 信道宽度（而不是自动 20/40 MHz）可能会获得更好的连接性，尽管它可能会影响 N 速度。我也更幸运地使用固定信道（1、6 或 11），而不是自动信道选择。此外，请确保路由器不是设置为仅使用 N 速度；自动 B、G 和 N 是首选。进行这些更改后，重新启动路由器。
接下来，我建议明确设置你的监管范围。检查你的：
sudo iw reg get
如果您选择 00，则这是一个通用的设置。请在此处查找您的设置：http://en.wikipedia.org/wiki/ISO_3166-1_alpha-2然后，永久设置它：
gksudo gedit /etc/default/crda
如果您没有文本编辑器 gedit，请使用 nano 或 Kate 或 Leafpad。将最后一行更改为：
REGDOMAIN=IS
仔细校对，保存并关闭文本编辑器。当然，如果不是冰岛，请替换您的国家代码。
重新启动 NUC，并让我们知道稳定性是否有所改善。
答案2
再次问好，感谢您的反馈，
所以我做了以下事情：
- BIOS 更新：于 2015 年 6 月 12 日发布。之前安装的版本已有大约一年的历史。
- 路由器设置：我选择了 WPA (TKIP+AES)，因为我的路由器界面上显示这是首选模式（但没有说明原因）。我的其他选择是：WEP（但由于安全性较低，我会忽略它）、WPA (TKIP) 或 WPA (AES/CCMP)。您推荐其中一种吗？
- 路由器通道从 13 更改为 6。
- 路由器的 N 模式专用：界面上不存在此选项。不过我很确定路由器不是处于 N 模式，因为我的上网本只支持 B 和 G，但仍然可以连接到 wifi。
- 路由器重启完成。
- iw reg get 的输出确实是00。
- REGDOMAIN 已从 00 更改为 FR。
- iw reg get 的输出现在是 FR。
- NUC 重启完成。
我昨天做了一些测试，wifi 响应明显更好。我能够通过 apt-get 进行更新，下载速度在 500 到 700 ko/s 之间（我认为还可以）。互联网浏览速度非常快。今天可能稍微慢一点，但很难说。
问题似乎已经解决，但不幸的是，我过去已经习惯了这些暂时的改进。现在就把这个问题视为结束吧，如果问题在几周后/重启/更新后出现，我会再发帖。
再次感谢 ！
答案3
我在使用英特尔 nuc skull 时也遇到了这个问题。驱动程序和 BIOS 更新没有帮助。但将路由器中的频道从“自动”切换到频道“1”就可以了。