ubuntu20.04官方安装I219-V驱动

更新了ubuntu20.04的内核后，缺失网卡驱动与无线网卡驱动，导致无法上网，需要重新安装网卡驱动，本教程仅适合ubuntu20.04安装I219-V有线网卡驱动，无线网卡驱动暂未解决。

1. 查看网卡型号

使用以下命令查看网卡型号，可以看到网卡为I219-V

lspci -v

2. 下载对应网卡驱动

在intel官网找到I219-V驱动程序

点击下载e1000e-3.8.4.tar.gz

3. 解压对应网卡驱动

cd  ~/Downloads/
tar -xzvf e1000e-3.8.4.tar.gz

解压后会看到对应e1000e-3.8.4文件夹，文件夹内容如下

4. 安装网卡驱动

打开readme就能看到详细的安装方法，我们直接从第三步开始

To manually build the driver

1. Move the base driver tar file to the directory of your choice.
   For example, use ‘/home/username/e1000e’ or ‘/usr/local/src/e1000e’.

2. Untar/unzip the archive, where <x.x.x> is the version number for the
   driver tar file:

   # tar zxf e1000e-<x.x.x>.tar.gz

————————————————从这里开始安装网卡驱动—————————————————
3. Change to the driver src directory, where <x.x.x> is the version number
for the driver tar:

   # cd e1000e-<x.x.x>/src/

4. Compile the driver module:

   # make install

The binary will be installed as:
/lib/modules//updates/drivers/net/ethernet/intel/e1000e/e1000e.ko

The install location listed above is the default location. This may differ
for various Linux distributions.

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5. Load the module using the modprobe command.

   To check the version of the driver and then load it:

   # modinfo e1000e
   # modprobe e1000e

Alternately, make sure that any older e1000e drivers are removed from the
kernel before loading the new module:

   # rmmod e1000e; modprobe e1000e

——————————————————以下可以不用操作——————————————————
6. Assign an IP address to the interface by entering the following,
where is the interface name that was shown in dmesg after modprobe:

   # ip address add <IP_address>/<netmask bits> dev <ethX>

7. Verify that the interface works. Enter the following, where IP_address
   is the IP address for another machine on the same subnet as the interface
   that is being tested:

   # ping <IP_address>

—————————————————————重要——————————————————————
Note: For certain distributions like (but not limited to) Red Hat Enterprise
Linux 7 and Ubuntu, once the driver is installed, you may need to update the
initrd/initramfs file to prevent the OS loading old versions of the e1000e
driver. Use the dracut utility on Red Hat distributions:

	# dracut --force

For Ubuntu:

	# update-initramfs -u

至此完成安装