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无线 AC 卡仅显示为无线 = IEEE 802.11abg

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无线 AC 卡仅显示为无线 = IEEE 802.11abg

我有一个英特尔无线 7260ac我的笔记本电脑中的卡以前可以达到 300Mb，但现在只能达到 54Mb，我发现在最近升级到 ubuntu 16.04.1 后它显示为 IEEE 802.11abg，我该如何解决这个问题？

我输入命令 sudo lshw -C 网络

 *-network               
       description: Wireless interface
       product: Wireless 7260
       vendor: Intel Corporation
       physical id: 0
       bus info: pci@0000:03:00.0
       logical name: wlp3s0
       version: 73
       serial: 0c:8b:fd:4e:64:8e
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=iwlwifi driverversion=4.4.0-62-generic firmware=17.352738.0 ip=192.168.1.10 latency=0 link=yes multicast=yes wireless=IEEE 802.11abg
       resources: irq:31 memory:f7d00000-f7d01fff
  *-network
       description: Ethernet interface
       product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0.2
       bus info: pci@0000:04:00.2
       logical name: enp4s0f2
       version: 0a
       serial: 00:90:f5:f9:d9:f8
       size: 10Mbit/s
       capacity: 1Gbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl8411-1_0.0.3 06/18/12 latency=0 link=no multicast=yes port=MII speed=10Mbit/s
       resources: irq:27 ioport:e000(size=256) memory:f0004000-f0004fff memory:f0000000-f0003fff

我还检查了我的信号强度，这很好用 nmcli d wifi

*  SSID                             MODE   CHAN  RATE       SIGNAL  BARS  SECURITY 
   guest_2.4ghz                Infra  7     54 Mbit/s  89      ▂▄▆█  WPA2     
*  2.4ghz                      Infra  7     54 Mbit/s  77      ▂▄▆_  WPA2     
   5ghz                        Infra  161   54 Mbit/s  77      ▂▄▆_  WPA2

我也做了uname -a

Linux sys76 4.4.0-62-generic #83-Ubuntu SMP Wed Jan 18 14:10:15 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux

我也做了lsb_release -a

LSB Version:    core-9.20160110ubuntu0.2-amd64:core-9.20160110ubuntu0.2-noarch:security-9.20160110ubuntu0.2-amd64:security-9.20160110ubuntu0.2-noarch
Distributor ID: Ubuntu
Description:    Ubuntu 16.04.1 LTS
Release:    16.04
Codename:   xenial

我使用 iwconfig 做了iwconfig wlp3s0

wlp3s0    IEEE 802.11abg  ESSID:"2.4ghz"  
          Mode:Managed  Frequency:2.442 GHz  Access Point: E0:3F:49:93:3F:10   
          Bit Rate=54 Mb/s   Tx-Power=22 dBm   
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Power Management:off
          Link Quality=68/70  Signal level=-42 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:134   Missed beacon:0

我做了所有s /lib/firmware | grep 7260

user1@sys76:~$ ls /lib/firmware | grep 7260
iwlwifi-7260-10.ucode
iwlwifi-7260-12.ucode
iwlwifi-7260-13.ucode
iwlwifi-7260-16.ucode
iwlwifi-7260-17.ucode
iwlwifi-7260-7.ucode
iwlwifi-7260-8.ucode
iwlwifi-7260-9.ucode

答案1

发现问题了，我把这行 options iwlwifi 11n_disable=1 添加到我的 /etc/modprobe.d/iwlwifi.conf文件中，解决了另一个断开连接的问题，所以我把它删除了，速度问题就解决了。但我的 wifi 卡和网络管理器断开连接的问题太多了，所以我决定试试 wicd。

还添加了行（关闭 wifi 电源管理）

sleep 5 ; /sbin/iw wlp3s0 set power_save off

致我的/etc/rc.local file

更新答案：

由于遇到更多问题和断开连接而更新此答案这里是似乎有效的最终更改的列表。

1) Upgraded to to kernel 4.8.0-39 from 4.4 
2) Added files 
     -/etc/modprobe.d/iwldvm.conf
      added line: options iwldvm power_scheme=1

     -/etc/modprobe.d/iwlmvm.conf
      added line: options iwlmvm power_scheme=1

     -/etc/modprobe.d/iwlwifi.conf
      added line: options iwlwifi power_save=0
      added line: options iwlwifi 11n_disable=8

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