这里扯一下我遇到的问题，若是没兴趣，直接跳过，看下一个大标题
系统装好后，执行命令：ubuntu
ifconfig
发现只有网线端口和lovim
enp0s25: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether 00:1d:72:84:8f:62 txqueuelen 1000 (Ethernet)
...
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
...
由于个人网卡是PCIE的，执行命令看一下：网络
lspci
00:00.0 Host bridge: Intel Corporation Mobile PM965/GM965/GL960 Memory Controller Hub (rev 0c) 00:02.0 VGA compatible controller: Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller (primary) (rev 0c) 00:02.1 Display controller: Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller (secondary) (rev 0c) 00:03.0 Communication controller: Intel Corporation Mobile PM965/GM965 MEI Controller (rev 0c) 00:03.2 IDE interface: Intel Corporation Mobile PM965/GM965 PT IDER Controller (rev 0c) 00:03.3 Serial controller: Intel Corporation Mobile PM965/GM965 KT Controller (rev 0c) 00:19.0 Ethernet controller: Intel Corporation 82566MM Gigabit Network Connection (rev 03) 00:1a.0 USB controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #4 (rev 03) 00:1a.1 USB controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #5 (rev 03) 00:1a.7 USB controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI Controller #2 (rev 03) 00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio Controller (rev 03) 00:1c.0 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 1 (rev 03) 00:1c.1 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 2 (rev 03) 00:1d.0 USB controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #1 (rev 03) 00:1d.1 USB controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #2 (rev 03) 00:1d.7 USB controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI Controller #1 (rev 03) 00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev f3) 00:1f.0 ISA bridge: Intel Corporation 82801HEM (ICH8M-E) LPC Interface Controller (rev 03) 00:1f.1 IDE interface: Intel Corporation 82801HM/HEM (ICH8M/ICH8M-E) IDE Controller (rev 03) 00:1f.2 SATA controller: Intel Corporation 82801HM/HEM (ICH8M/ICH8M-E) SATA Controller [AHCI mode] (rev 03) 00:1f.3 SMBus: Intel Corporation 82801H (ICH8 Family) SMBus Controller (rev 03) 03:00.0 Network controller: Intel Corporation PRO/Wireless 3945ABG [Golan] Network Connection (rev 02) 05:00.0 CardBus bridge: Ricoh Co Ltd RL5c476 II (rev ba) 05:00.1 FireWire (IEEE 1394): Ricoh Co Ltd R5C832 IEEE 1394 Controller (rev 04) 05:00.2 SD Host controller: Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSPro Host Adapter (rev 21)
能识别到无线网卡app
03:00.0 Network controller: Intel Corporation PRO/Wireless 3945ABG [Golan] Network Connection (rev 02)
lshw -C network
很惊奇地发现，网卡驱动是有的，只是被系统禁止使用了，第二个network后面的DISABLEDless
*-network
description: Ethernet interface
product: 82566MM Gigabit Network Connection
vendor: Intel Corporation
physical id: 19
bus info: pci@0000:00:19.0
logical name: enp0s25
version: 03
serial: 00:1d:72:84:8f:62
capacity: 1Gbit/s
width: 32 bits
clock: 33MHz
capabilities: bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=e1000e driverversion=3.2.6-k firmware=0.3-0 latency=0 link=no multicast=yes port=twisted pair
resources: irq:27 memory:fe000000-fe01ffff memory:fe025000-fe025fff ioport:1840(size=32)
*-network DISABLED
description: Wireless interface
product: PRO/Wireless 3945ABG [Golan] Network Connection
vendor: Intel Corporation
physical id: 0
bus info: pci@0000:03:00.0
logical name: wls3
version: 02
serial: 00:1c:bf:42:f7:10
width: 32 bits
clock: 33MHz
capabilities: bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=iwl3945 driverversion=4.15.0-96-generic firmware=15.32.2.9 ip=192.168.3.100 latency=0 link=yes multicast=yes wireless=IEEE 802.11
resources: irq:30 memory:dfcff000-dfcfffff
既然驱动都没有问题，那就把它启用就行了。oop
18.04版本的ubuntu与早期的网络配置不同，16.04及以前的是改/etc/network/interfaces
但18.04的配置文件改变了，改成/etc/netplan/50-cloud-init.yamlcode
我是接着网线装的
sudo apt-get install wpasupplicant sudo apt-get install network-manager
sudo vim /etc/netplan/50-cloud-init.yaml
修改内容以下：
注意yaml文件内容的缩进格式，不懂能够谷歌一下server
network:
renderer: NetworkManager
ethernets:
enp0s25:
dhcp4: true
wifis:
wls3:
dhcp4: no
addresses:
- 192.168.3.100/24
gateway4: 192.168.3.1
nameservers:
addresses:
- 8.8.8.8
- 8.8.4.4
search: []
access-points:
"301":
password: '07691234'
version: 2
wls3是个人网卡名字，也就是命令lshw -C network看到的名字
dhcp4: no不使用自动获取IP
addresses要使用的IP
gateway4路由IP
access-points下面配置的是wifi的ssid和密码
sudo netplan generate sudo netplan apply
再次执行ifconfig看一下ip
$ ifconfig
enp0s25: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether 00:1d:72:84:8f:62 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
device interrupt 20 memory 0xfe000000-fe020000
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 8083 bytes 574680 (574.6 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 8083 bytes 574680 (574.6 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
wls3: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.3.100 netmask 255.255.255.0 broadcast 192.168.3.255
inet6 fe80::21c:bfff:fe42:f710 prefixlen 64 scopeid 0x20<link>
ether 00:1c:bf:42:f7:10 txqueuelen 1000 (Ethernet)
RX packets 1751 bytes 150643 (150.6 KB)
RX errors 0 dropped 1026 overruns 0 frame 0
TX packets 350 bytes 57846 (57.8 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
使用无线网能够正常连网了ci