Ubuntu 17.04 中 WiFi 无法获得正确的互联网速度

Ubuntu 17.04 中 WiFi 无法获得正确的互联网速度

我的 Ubuntu 17.04 通过无线连接无法获得正确的互联网速度。我的移动设备和其他笔记本电脑的互联网速度都正常。请说明需要哪些更多信息,以便您了解问题。

我从命令中得到以下输出lspci -knn | grep Net -A3

08:00.0 Network controller [0280]: Ralink corp. RT3090 Wireless 802.11n 1T/1R PCIe [1814:3090]
    Subsystem: Lenovo RT3090 Wireless 802.11n 1T/1R PCIe [17aa:f101]
    Kernel driver in use: rt2800pci
    Kernel modules: rt2800pci

nmcli d show命令给出以下输出:

GENERAL.DEVICE:                         wlan0
GENERAL.TYPE:                           wifi
GENERAL.HWADDR:                         60:D8:19:36:AC:3A
GENERAL.MTU:                            0
GENERAL.STATE:                          100 (connected)
GENERAL.CONNECTION:                     Gateway
GENERAL.CON-PATH:                       /org/freedesktop/NetworkManager/ActiveConnection/3
IP4.ADDRESS[1]:                         192.168.0.105/24
IP4.GATEWAY:                            192.168.0.1
IP4.ROUTE[1]:                           dst = 169.254.0.0/16, nh = 0.0.0.0, mt = 1000
IP4.DNS[1]:                             192.168.0.1
IP4.DNS[2]:                             8.8.8.8
IP6.ADDRESS[1]:                         fe80::4641:2af2:d5d6:b998/64
IP6.GATEWAY:                            

GENERAL.DEVICE:                         br-23ac3a4d281d
GENERAL.TYPE:                           bridge
GENERAL.HWADDR:                         02:42:1E:36:5E:73
GENERAL.MTU:                            1500
GENERAL.STATE:                          10 (unmanaged)
GENERAL.CONNECTION:                     --
GENERAL.CON-PATH:                       --
IP4.ADDRESS[1]:                         172.18.0.1/16
IP4.GATEWAY:                            
IP6.ADDRESS[1]:                         fe80::42:1eff:fe36:5e73/64
IP6.GATEWAY:                            

GENERAL.DEVICE:                         docker0
GENERAL.TYPE:                           bridge
GENERAL.HWADDR:                         02:42:9B:10:4A:8A
GENERAL.MTU:                            1500
GENERAL.STATE:                          10 (unmanaged)
GENERAL.CONNECTION:                     --
GENERAL.CON-PATH:                       --
IP4.ADDRESS[1]:                         172.17.0.1/16
IP4.GATEWAY:                            
IP6.GATEWAY:                            

GENERAL.DEVICE:                         eth0
GENERAL.TYPE:                           ethernet
GENERAL.HWADDR:                         DC:0E:A1:64:A4:59
GENERAL.MTU:                            1500
GENERAL.STATE:                          10 (unmanaged)
GENERAL.CONNECTION:                     --
GENERAL.CON-PATH:                       --
WIRED-PROPERTIES.CARRIER:               off
IP4.GATEWAY:                            
IP6.GATEWAY:                            

GENERAL.DEVICE:                         veth6dfaaec
GENERAL.TYPE:                           ethernet
GENERAL.HWADDR:                         CE:28:53:0F:37:BC
GENERAL.MTU:                            1500
GENERAL.STATE:                          10 (unmanaged)
GENERAL.CONNECTION:                     --
GENERAL.CON-PATH:                       --
WIRED-PROPERTIES.CARRIER:               on

GENERAL.DEVICE:                         lo
GENERAL.TYPE:                           loopback
GENERAL.HWADDR:                         00:00:00:00:00:00
GENERAL.MTU:                            65536
GENERAL.STATE:                          10 (unmanaged)
GENERAL.CONNECTION:                     --
GENERAL.CON-PATH:                       --
IP4.ADDRESS[1]:                         127.0.0.1/8
IP4.GATEWAY:                            
IP6.ADDRESS[1]:                         ::1/128
IP6.GATEWAY:                            

iwconfig命令给出以下输出:

eth0      no wireless extensions.

br-23ac3a4d281d  no wireless extensions.

veth6dfaaec  no wireless extensions.

wlan0     IEEE 802.11bgn  ESSID:"Gateway"  
          Mode:Managed  Frequency:2.437 GHz  Access Point: 98:DE:D0:98:26:08   
          Bit Rate=121.5 Mb/s   Tx-Power=20 dBm   
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Power Management:on
          Link Quality=70/70  Signal level=-37 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:220  Invalid misc:50251   Missed beacon:0

docker0   no wireless extensions.

lo        no wireless extensions.

nmcli d wifi给出以下输出:

*  SSID             MODE   CHAN  RATE       SIGNAL  BARS  SECURITY  
   JioFi2_A3C7E6    Infra  10    54 Mbit/s  100     ▂▄▆█  WPA2      
*  Gateway          Infra  6     54 Mbit/s  77      ▂▄▆_  WPA1 WPA2 

当我使用 JioFi2_A3C7E6 连接时,我获得了适当的互联网速度,并且对于我的移动设备和 Ubuntu 笔记本电脑来说都是相同的。

但是当我使用网关连接时,我的 ubuntu 笔记本电脑的速度不太好,但我的移动设备的互联网速度很好。

答案1

为了提高连接质量:

  1. 检查路由器通道

  2. 禁用 IPv6(如果可能)

    Firefox 浏览器:

    about:config
    布尔键 network.dns.disableIPv6
    全局从 'false' 改为 'true'

    sudo -H gedit /etc/sysctl.conf
    

    添加:

    ipv6.conf.all.disable_ipv6=1
    

    激活:

    sudo sysctl -p
    

    查看:

    ip -o -6 addr show wlan0 | sed -e 's/^.*inet6 \([^ ]\+\).*/\1/'
    

    如果结果为空,则 OK

  3. 国家代码(最重要)

    检查你的:

    sudo iw reg get
    

    找到并暂时将其设置为您的国家/地区:

    例如:

    sudo iw reg set BR
    

    或者

    sudo iw reg set IN
    

    永久设置:

    sudo -H gedit /etc/default/crda
    

    例如:

    REGDOMAIN=BR
    

    或者

    REGDOMAIN=IN
    

相关内容