Ubuntu 16.04 服务器全新安装 - 无法 ping 通网关且根本没有 wifi 网络

Ubuntu 16.04 服务器全新安装 - 无法 ping 通网关且根本没有 wifi 网络

我刚刚在台式电脑上全新安装了 Ubuntu 16.04。在安装过程中,自动网络脚本失败,因此我手动配置了它(输入了自己的 IP,输入了子网掩码,输入了默认网关),一切正常。它成功连接并完成安装。

现在安装好了,但我没有获得任何网络连接 - 我甚至无法 ping 网关。我正在使用 wifi,无法使用以太网。enp2s0 上的 ifup/ifdown 没有问题。我尝试使用 DHCP,但 DHCP 挂了,也没有解决问题。我还验证了请求的 IP 地址未在网络上使用。

root@ubuntu:/home/liam#  lshw —class network 
*—network 
    description: Ethernet interface 
    product: RTL8111/8168/8411 PCI Express Gigabit Ethernet 
    vendor: Realtek Semiconductor Co., Ltd. 
    physical id: O 
    bus info:  pci@0000:02:00.0
    logical name: enp2s0 
    version: 06 
    serial: b8:97:5a:32:c1:5f
    size: 10Mbit/s 
    capacity: 1Gbit/s 
    width: 64 bits 
    clock: 33MHz 
    capabilities: pm msi pciexpress msix vpd bus_master cap_list 
    configuration: autonegotiation=on broadcast=yes driver:r8169 
    resources: irq:25 ioport:d000(size=256) memory:f0004000-f000 
*-network DISABLED 
    description: Wireless interface 
    physical id: 1 
    bus info: usb@1:2
    logical name: wlxec086b1eaf1b 
    serial: ec:O8:6b:1e:af:1b 
    capabilities: ethernet physical wireless 
    configuration: broadcast=yes driver:r8188eu multicast=yes

输出/etc/network/interfaces

# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

source /etc/network/interfaces.d/*

# The loopback network interface 
auto lo 
iface lo inet loopback 

# The primary network interface 
auto enp2s0
iface enp2s0 inet static 
        address 192.168.1.200
        netmask 255.255.255.0 
        network 192.168.1.0 
        broadcast 192.168.1.255 
        gateway 192.168.1.254 
        # dns-* options are implemented by the resolvconf package
        dns-nameservers 192.168.1.254 
        wpa-ssid ATT548CA 
        wpa-psk frank777

#auto enp2s0
#iface enp2s0 inet dhcp 
#       wpa-ssid ATT548CA
#       wpa-psk frank777 

编辑:无线信息脚本结果:http://paste.ubuntu.com/24446060/

答案1

首先,您的文件在几个方面存在错误。首先,虽然您说要使用无线,但您的接口 enp2s0 是用于以太网的。无线的正确顺序是:

# The loopback network interface 
auto lo  
iface lo inet loopback 

# The primary network interface  
auto wlxec086b1eaf1b  
iface wlxec086b1eaf1b inet static  
address 192.168.1.200 
netmask 255.255.255.0  
gateway 192.168.1.254
# dns-* options are implemented by the resolvconf package
dns-nameservers 192.168.1.254 8.8.8.8
wpa-ssid ATT548CA 
wpa-psk frank777

接下来重新启动界面:

sudo ifdown wlxec086b1eaf1b && sudo ifup -v wlxec086b1eaf1b

检查您是否已连接:

ping -c3 192.168.1.254
ping -c3 www.ubuntu.com

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