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Wifi 信号很慢，只能在很短的距离内使用

tag-icon • tag-icon networking wireless network-manager atheros
Wifi 信号很慢，只能在很短的距离内使用

我使用的是 ubuntu 16.04，如果我离路由器有点远，我的 wifi 就无法工作

我的卡是 Atheros QCA9565 / AR9565 (联想 G5070)

以下是我的设备设置：

wlp2s0    IEEE 802.11bgn  ESSID:"ooredooE9BDC0"  
          Mode:Managed  Frequency:2.412 GHz  Access Point: A4:B1:E9:E9:BD:C0   
          Bit Rate=6.5 Mb/s   Tx-Power=15 dBm   
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Power Management:off
          Link Quality=26/70  Signal level=-84 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:93   Missed beacon:0

输出lspci -nn | grep -i net

01:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 10)
02:00.0 Network controller [0280]: Qualcomm Atheros QCA9565 / AR9565 Wireless Network Adapter [168c:0036] (rev 01)

PS:@Andrea Lazzarotto 这里是输出：http://www.beetxt.com/Gjz/ 请帮助

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