Wifi 连接无法与 Intel NUC + Wireless AC 7620 配合使用

Wifi 连接无法与 Intel NUC + Wireless AC 7620 配合使用

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。

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