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WiFi 无法使用，且未显示在网络管理器和系统设置中

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WiFi 无法使用，且未显示在网络管理器和系统设置中

我使用的是 Ubuntu 16.04，我的 wifi 图标刚刚消失了。它甚至没有显示在系统设置中。结果sudo lspci -nn是：

08:00.0 Network controller [0280]: Ralink corp. RT3290 Wireless 802.11n 1T/1R PCIe [1814:3290]

其结果sudo lshw -C network是：

 *-network UNCLAIMED     
   description: Network controller
   product: RT3290 Wireless 802.11n 1T/1R PCIe
   vendor: Ralink corp.
   physical id: 0
   bus info: pci@0000:08:00.0
   version: 00
   width: 32 bits
   clock: 33MHz
   capabilities: pm msi pciexpress cap_list
   configuration: latency=0
   resources: memory:b5510000-b551ffff


*-network
   description: Ethernet interface
   product: RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller
   vendor: Realtek Semiconductor Co., Ltd.
   physical id: 0
   bus info: pci@0000:09:00.0
   logical name: eth0
   version: 08
   serial: a0:1d:48:df:4a:d1
   size: 100Mbit/s
   capacity: 100Mbit/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 autonegotiation
   configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=rtl8106e-2_0.0.1 04/23/13 ip=10.51.1.199 latency=0 link=yes multicast=yes port=MII speed=100Mbit/s
   resources: irq:42 ioport:4000(size=256) memory:b5404000-b5404fff memory:b5400000-b5403fff

我也尝试过：

sudo service network-manager stop

 sudo rm /var/lib/NetworkManager/NetworkManager.state
 sudo service network-manager start

我还尝试按照视频中的建议更改附加驱动程序：

软件和更新->附加驱动程序的屏幕截图：

软件和更新 -> 附加驱动程序的屏幕截图

系统诊断结果

结果：sudo systemctl status networking.service

但无济于事。

请帮忙 ！！

答案1

您blacklist rt2800pci在 /etc/modprobe.d/blacklist.conf 中发现 rt2800pci 应该是支持您的 wifi 的内核模块。

要解决此问题，请打开终端窗口并输入 

sudo sed -i 's/blacklist rt2800pci/#blacklist rt2800pci/' /etc/modprobe.d/blacklist.conf

重启后 wifi 应该可以正常工作。代码只需替换blacklist rt2800pci为行首的#blacklist rt2800pci 附加内容即可。#

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