无线连接不再工作 - Ubuntu 18.04

无线连接不再工作 - Ubuntu 18.04

我使用 Ubuntu 18.04,我的无线连接不再工作,而以前它可以工作。我尝试使用不同的路由器,但都发生了相同的情况。“连接失败激活网络连接失败”的消息不断弹出,因此它似乎继续尝试连接但失败了。它读取了很多相对相同的问题,但没有找到解决方案。我禁用了代理,什么也没发生。我不使用 VPN。我想到的终端输出并没有帮助我找到要修复的内容。以下是一些可能有助于您指出问题的输出:

===== sudo lshw -C network =====
*-network                 
   description: Wireless interface
   product: Wireless 8260
   vendor: Intel Corporation
   physical id: 0
   bus info: pci@0000:02:00.0
   logical name: wlp2s0
   version: 3a
   serial: 74:70:fd:3d:d9:a2
   width: 64 bits
   clock: 33MHz
   capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
   configuration: broadcast=yes driver=iwlwifi driverversion=4.15.0-36-generic firmware=34.0.1 ip=192.168.1.55 latency=0 link=yes multicast=yes wireless=IEEE 802.11
   resources: irq:130 memory:e1100000-e1101fff
*-network
   description: Ethernet interface
   product: Ethernet Connection I219-LM
   vendor: Intel Corporation
   physical id: 1f.6
   bus info: pci@0000:00:1f.6
   logical name: enp0s31f6
   version: 21
   serial: 10:62:e5:a2:0c:84
   capacity: 1Gbit/s
   width: 32 bits
   clock: 33MHz
   capabilities: pm msi bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
   configuration: autonegotiation=on broadcast=yes driver=e1000e driverversion=3.2.6-k firmware=0.13-4 latency=0 link=no multicast=yes port=twisted pair
   resources: irq:131 memory:e1200000-e121ffff
*-network
   description: Ethernet interface
   physical id: 2
   logical name: enp0s20f0u3c2
   serial: f6:34:83:93:42:13
   capabilities: ethernet physical
   configuration: broadcast=yes driver=cdc_ether driverversion=22-Aug-2005 firmware=CDC Ethernet Device link=yes multicast=yes


===== ifconfig =====
enp0s20f0u3c2: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
    inet6 fe80::f434:83ff:fe93:4213  prefixlen 64  scopeid 0x20<link>
    ether f6:34:83:93:42:13  txqueuelen 1000  (Ethernet)
    RX packets 118  bytes 6208 (6.2 KB)
    RX errors 0  dropped 0  overruns 0  frame 0
    TX packets 1682  bytes 299537 (299.5 KB)
    TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

enp0s31f6: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
    ether 10:62:e5:a2:0c:84  txqueuelen 1000  (Ethernet)
    RX packets 190  bytes 33006 (33.0 KB)
    RX errors 0  dropped 0  overruns 0  frame 0
    TX packets 174  bytes 18215 (18.2 KB)
    TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
    device interrupt 16  memory 0xe1200000-e1220000  

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
    inet 127.0.0.1  netmask 255.0.0.0
    inet6 ::1  prefixlen 128  scopeid 0x10<host>
    loop  txqueuelen 1000  (Local Loopback)
    RX packets 124  bytes 8342 (8.3 KB)
    RX errors 0  dropped 0  overruns 0  frame 0
    TX packets 124  bytes 8342 (8.3 KB)
    TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

wlp2s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
    inet 192.168.43.84  netmask 255.255.255.0  broadcast 192.168.43.255
    inet6 fe80::b322:a09f:1c2:72ab  prefixlen 64  scopeid 0x20<link>
    ether 74:70:fd:3d:d9:a2  txqueuelen 1000  (Ethernet)
    RX packets 6298  bytes 1489707 (1.4 MB)
    RX errors 0  dropped 0  overruns 0  frame 0
    TX packets 17013  bytes 2103759 (2.1 MB)
    TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0


lo        no wireless extensions.

enp0s31f6  no wireless extensions.

wlp2s0    IEEE 802.11  ESSID:"Blank"  
      Mode:Managed  Frequency:2.437 GHz  Access Point: 58:48:22:64:35:49   
      Bit Rate=72.2 Mb/s   Tx-Power=22 dBm   
      Retry short limit:7   RTS thr:off   Fragment thr:off
      Power Management:on
      Link Quality=70/70  Signal level=-27 dBm  
      Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
      Tx excessive retries:0  Invalid misc:55   Missed beacon:0

enp0s20f0u3c2  no wireless extensions.

===== iwconfig =====
lo        no wireless extensions.

enp0s31f6  no wireless extensions.

wlp2s0    IEEE 802.11  ESSID:"Blank"  
      Mode:Managed  Frequency:2.437 GHz  Access Point: 58:48:22:64:35:49   
      Bit Rate=72.2 Mb/s   Tx-Power=22 dBm   
      Retry short limit:7   RTS thr:off   Fragment thr:off
      Power Management:on
      Link Quality=70/70  Signal level=-27 dBm  
      Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
      Tx excessive retries:0  Invalid misc:55   Missed beacon:0

enp0s20f0u3c2  no wireless extensions.



===== route -n =====
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0         192.168.43.1    0.0.0.0         UG    20600  0        0 wlp2s0
169.254.0.0     0.0.0.0         255.255.0.0     U     1000   0        0 wlp2s0
192.168.43.0    0.0.0.0         255.255.255.0   U     600    0        0 wlp2s0



===== ping -c 1 google.com =====
ping: google.com: Name or service not known

chili555 询问的附加信息:

===== dmesg | grep -e iwl -e wlp =====
[    6.707092] iwlwifi 0000:02:00.0: loaded firmware version 34.0.1 op_mode iwlmvm
[    6.742687] iwlwifi 0000:02:00.0: Detected Intel(R) Dual Band Wireless AC 8260, REV=0x208
[    6.816083] iwlwifi 0000:02:00.0: base HW address: 74:70:fd:3d:d9:a2
[    6.908315] ieee80211 phy0: Selected rate control algorithm 'iwl-mvm-rs'
[    6.910713] iwlwifi 0000:02:00.0 wlp2s0: renamed from wlan0
[    8.186022] IPv6: ADDRCONF(NETDEV_UP): wlp2s0: link is not ready
[    8.433188] IPv6: ADDRCONF(NETDEV_UP): wlp2s0: link is not ready
[    8.515954] IPv6: ADDRCONF(NETDEV_UP): wlp2s0: link is not ready
[ 1212.494331] IPv6: ADDRCONF(NETDEV_UP): wlp2s0: link is not ready
[ 1212.739471] IPv6: ADDRCONF(NETDEV_UP): wlp2s0: link is not ready
[ 1212.795360] IPv6: ADDRCONF(NETDEV_UP): wlp2s0: link is not ready
[ 1335.585811] wlp2s0: authenticate with 2c:39:96:2c:56:9a
[ 1335.594483] wlp2s0: send auth to 2c:39:96:2c:56:9a (try 1/3)
[ 1335.603386] wlp2s0: authenticated
[ 1335.610266] wlp2s0: associate with 2c:39:96:2c:56:9a (try 1/3)
[ 1335.715959] wlp2s0: associate with 2c:39:96:2c:56:9a (try 2/3)
[ 1335.827947] wlp2s0: associate with 2c:39:96:2c:56:9a (try 3/3)
[ 1335.963648] wlp2s0: association with 2c:39:96:2c:56:9a timed out
[ 1336.136132] wlp2s0: authenticate with 2c:39:96:2c:56:9b
[ 1336.143910] wlp2s0: send auth to 2c:39:96:2c:56:9b (try 1/3)
[ 1336.152794] wlp2s0: authenticated
[ 1336.155746] wlp2s0: associate with 2c:39:96:2c:56:9b (try 1/3)
[ 1336.157595] wlp2s0: RX AssocResp from 2c:39:96:2c:56:9b (capab=0x411 status=0 aid=6)
[ 1336.159613] wlp2s0: associated
[ 1336.191894] IPv6: ADDRCONF(NETDEV_CHANGE): wlp2s0: link becomes ready
[ 1336.215449] wlp2s0: Limiting TX power to 23 (23 - 0) dBm as advertised by 2c:39:96:2c:56:9b
[ 1610.067601] wlp2s0: deauthenticating from 2c:39:96:2c:56:9b by local choice (Reason: 3=DEAUTH_LEAVING)
[ 1611.214291] IPv6: ADDRCONF(NETDEV_UP): wlp2s0: link is not ready
[ 1611.404232] wlp2s0: authenticate with 2c:39:96:2c:56:9b
[ 1611.411889] wlp2s0: send auth to 2c:39:96:2c:56:9b (try 1/3)
[ 1611.414318] wlp2s0: authenticated
[ 1611.415594] wlp2s0: associate with 2c:39:96:2c:56:9b (try 1/3)
[ 1611.417509] wlp2s0: RX AssocResp from 2c:39:96:2c:56:9b (capab=0x411 status=0 aid=6)
[ 1611.419256] wlp2s0: associated
[ 1611.428620] IPv6: ADDRCONF(NETDEV_CHANGE): wlp2s0: link becomes ready
[ 1611.462507] wlp2s0: Limiting TX power to 23 (23 - 0) dBm as advertised by 2c:39:96:2c:56:9b
[ 1773.795761] wlp2s0: deauthenticating from 2c:39:96:2c:56:9b by local choice (Reason: 3=DEAUTH_LEAVING)
[ 1776.152754] wlp2s0: authenticate with 2c:39:96:2c:56:9b
[ 1776.154607] wlp2s0: send auth to 2c:39:96:2c:56:9b (try 1/3)
[ 1776.156788] wlp2s0: authenticated
[ 1776.159585] wlp2s0: associate with 2c:39:96:2c:56:9b (try 1/3)
[ 1776.161538] wlp2s0: RX AssocResp from 2c:39:96:2c:56:9b (capab=0x411 status=0 aid=6)
[ 1776.163265] wlp2s0: associated
[ 1776.221740] wlp2s0: Limiting TX power to 23 (23 - 0) dBm as advertised by 2c:39:96:2c:56:9b
[ 2212.257284] wlp2s0: deauthenticating from 2c:39:96:2c:56:9b by local choice (Reason: 3=DEAUTH_LEAVING)
[ 2216.990395] IPv6: ADDRCONF(NETDEV_UP): wlp2s0: link is not ready
[ 2217.055192] IPv6: ADDRCONF(NETDEV_UP): wlp2s0: link is not ready
[ 2220.548245] wlp2s0: authenticate with 2c:39:96:2c:56:9b
[ 2220.556051] wlp2s0: send auth to 2c:39:96:2c:56:9b (try 1/3)
[ 2220.562718] wlp2s0: authenticated
[ 2220.563596] wlp2s0: associate with 2c:39:96:2c:56:9b (try 1/3)
[ 2220.565439] wlp2s0: RX AssocResp from 2c:39:96:2c:56:9b (capab=0x411 status=0 aid=6)
[ 2220.567307] wlp2s0: associated
[ 2220.589263] IPv6: ADDRCONF(NETDEV_CHANGE): wlp2s0: link becomes ready
[ 2220.630750] wlp2s0: Limiting TX power to 23 (23 - 0) dBm as advertised by 2c:39:96:2c:56:9b
[ 2340.811403] wlp2s0: deauthenticating from 2c:39:96:2c:56:9b by local choice (Reason: 3=DEAUTH_LEAVING)
[ 2341.477299] IPv6: ADDRCONF(NETDEV_UP): wlp2s0: link is not ready
[ 2343.753361] wlp2s0: authenticate with 2c:39:96:2c:56:9b
[ 2343.761009] wlp2s0: send auth to 2c:39:96:2c:56:9b (try 1/3)
[ 2343.764835] wlp2s0: authenticated
[ 2343.767904] wlp2s0: associate with 2c:39:96:2c:56:9b (try 1/3)
[ 2343.769826] wlp2s0: RX AssocResp from 2c:39:96:2c:56:9b (capab=0x411 status=0 aid=6)
[ 2343.772549] wlp2s0: associated
[ 2343.780737] IPv6: ADDRCONF(NETDEV_CHANGE): wlp2s0: link becomes ready
[ 2343.816017] wlp2s0: Limiting TX power to 23 (23 - 0) dBm as advertised by 2c:39:96:2c:56:9b
[ 2376.382473] wlp2s0: deauthenticating from 2c:39:96:2c:56:9b by local choice (Reason: 3=DEAUTH_LEAVING)
[ 2379.661515] wlp2s0: authenticate with 2c:39:96:2c:56:9b
[ 2379.669293] wlp2s0: send auth to 2c:39:96:2c:56:9b (try 1/3)
[ 2379.675472] wlp2s0: authenticated
[ 2379.679588] wlp2s0: associate with 2c:39:96:2c:56:9b (try 1/3)
[ 2379.681479] wlp2s0: RX AssocResp from 2c:39:96:2c:56:9b (capab=0x411 status=0 aid=6)
[ 2379.683267] wlp2s0: associated
[ 2379.759563] wlp2s0: Limiting TX power to 23 (23 - 0) dBm as advertised by 2c:39:96:2c:56:9b
[ 5446.233493] wlp2s0: deauthenticating from 2c:39:96:2c:56:9b by local choice (Reason: 3=DEAUTH_LEAVING)
[ 5446.359163] wlp2s0: authenticate with 58:48:22:64:35:49
[ 5446.366508] wlp2s0: send auth to 58:48:22:64:35:49 (try 1/3)
[ 5446.382687] wlp2s0: authenticated
[ 5446.383702] wlp2s0: associate with 58:48:22:64:35:49 (try 1/3)
[ 5446.389240] wlp2s0: RX AssocResp from 58:48:22:64:35:49 (capab=0x411 status=0 aid=1)
[ 5446.394334] wlp2s0: associated
[ 8655.798445] wlp2s0: deauthenticated from 58:48:22:64:35:49 (Reason: 3=DEAUTH_LEAVING)
[ 8671.027105] IPv6: ADDRCONF(NETDEV_UP): wlp2s0: link is not ready
[ 8671.474290] wlp2s0: authenticate with 2c:39:96:2c:56:9b
[ 8671.483123] wlp2s0: send auth to 2c:39:96:2c:56:9b (try 1/3)
[ 8671.485389] wlp2s0: authenticated
[ 8671.487707] wlp2s0: associate with 2c:39:96:2c:56:9b (try 1/3)
[ 8671.489557] wlp2s0: RX AssocResp from 2c:39:96:2c:56:9b (capab=0x411 status=0 aid=6)
[ 8671.491333] wlp2s0: associated
[ 8671.510804] IPv6: ADDRCONF(NETDEV_CHANGE): wlp2s0: link becomes ready
[ 8671.529698] wlp2s0: Limiting TX power to 23 (23 - 0) dBm as advertised by 2c:39:96:2c:56:9b
[16328.425982] wlp2s0: deauthenticating from 2c:39:96:2c:56:9b by local choice (Reason: 3=DEAUTH_LEAVING)
[19875.406133] IPv6: ADDRCONF(NETDEV_UP): wlp2s0: link is not ready
[19875.475403] IPv6: ADDRCONF(NETDEV_UP): wlp2s0: link is not ready
[19878.960565] wlp2s0: authenticate with 2c:39:96:2c:56:9b
[19878.969077] wlp2s0: send auth to 2c:39:96:2c:56:9b (try 1/3)
[19878.975249] wlp2s0: authenticated
[19878.979956] wlp2s0: associate with 2c:39:96:2c:56:9b (try 1/3)
[19878.982137] wlp2s0: RX AssocResp from 2c:39:96:2c:56:9b (capab=0x411 status=0 aid=5)
[19878.985430] wlp2s0: associated
[19879.000637] IPv6: ADDRCONF(NETDEV_CHANGE): wlp2s0: link becomes ready
[19879.051291] wlp2s0: Limiting TX power to 23 (23 - 0) dBm as advertised by 2c:39:96:2c:56:9b
[22316.866816] wlp2s0: deauthenticating from 2c:39:96:2c:56:9b by local choice (Reason: 3=DEAUTH_LEAVING)
[22321.244325] IPv6: ADDRCONF(NETDEV_UP): wlp2s0: link is not ready
[22321.489274] IPv6: ADDRCONF(NETDEV_UP): wlp2s0: link is not ready
[22321.578514] IPv6: ADDRCONF(NETDEV_UP): wlp2s0: link is not ready
[22325.081814] wlp2s0: authenticate with 2c:39:96:2c:56:9b
[22325.089608] wlp2s0: send auth to 2c:39:96:2c:56:9b (try 1/3)
[22325.095648] wlp2s0: authenticated
[22325.099195] wlp2s0: associate with 2c:39:96:2c:56:9b (try 1/3)
[22325.101075] wlp2s0: RX AssocResp from 2c:39:96:2c:56:9b (capab=0x411 status=0 aid=3)
[22325.103524] wlp2s0: associated
[22325.104472] wlp2s0: Limiting TX power to 23 (23 - 0) dBm as advertised by 2c:39:96:2c:56:9b
[22325.118334] IPv6: ADDRCONF(NETDEV_CHANGE): wlp2s0: link becomes ready
[22453.191928] wlp2s0: disconnect from AP 2c:39:96:2c:56:9b for new auth to 2c:39:96:2c:56:9a
[22453.202593] wlp2s0: authenticate with 2c:39:96:2c:56:9a
[22453.209501] wlp2s0: send auth to 2c:39:96:2c:56:9a (try 1/3)
[22453.219291] wlp2s0: authenticated
[22453.231579] wlp2s0: associate with 2c:39:96:2c:56:9a (try 1/3)
[22453.236579] wlp2s0: RX ReassocResp from 2c:39:96:2c:56:9a (capab=0x31 status=0 aid=2)
[22453.254559] wlp2s0: associated

===== nmcli dev wifi list =====
IN-USE  SSID                         MODE   CHAN  RATE        SIGNAL  BARS  SECURITY         
    Livebox-2E10                 Infra  112   540 Mbit/s  74      ▂▄▆_  WPA2             
    Orange_Swiatlowod_E0F0_5GHz  Infra  52    540 Mbit/s  70      ▂▄▆_  WPA1 WPA2        
    SCG200_LBO                   Infra  100   270 Mbit/s  67      ▂▄▆_  WPA2             
    SCG200_Tunnel                Infra  100   270 Mbit/s  67      ▂▄▆_  WPA2             
*       Audio3D                      Infra  6     130 Mbit/s  66      ▂▄▆_  WPA1 WPA2        
    Livebox-5DC6                 Infra  11    195 Mbit/s  62      ▂▄▆_  WPA2             
    Livebox-85e4                 Infra  1     130 Mbit/s  59      ▂▄▆_  WPA1 WPA2        
    Livebox-A9A4                 Infra  6     130 Mbit/s  59      ▂▄▆_  WPA1 WPA2        
    Orange_Swiatlowod_E0F0       Infra  1     130 Mbit/s  57      ▂▄▆_  WPA1 WPA2        
    Livebox-828C                 Infra  6     130 Mbit/s  57      ▂▄▆_  WPA1 WPA2        
    Livebox-848c                 Infra  11    130 Mbit/s  57      ▂▄▆_  WPA1 

如果需要的话我会发布其他输出。

非常感谢您抽出时间。

答案1

我们清楚地看到您的无线漫游在三个接入点之间寻找更好的连接。这解释了恼人的断线和重新连接。

wlp2s0:使用 2c:39:96:2c:56:9a 进行身份验证

wlp2s0:使用 2c:39:96:2c:56:9b 进行身份验证

wlp2s0:使用 58:48:22:64:35:49 进行身份验证

我怀疑前两个是设置为自动选择频率和频道的同一路由器的 2.4 GHz 段和 5 GHz 段。如果您对此路由器有管理权限,我建议您重命名这些段;例如 peehay2.4 和 peehay5。每个段使用固定频道并使用 WPA2-AES(有时称为 CCMP)。我不建议使用任何混合模式,尤其是 TKIP。

您也可以通过 MAC 地址将无线网络绑定到最佳接入点,如下所示:Ubuntu 连接断开。工作了一段时间后又开始断开

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