整理下在 ubuntu 论坛安装 wifi 驱动的累积心得

常规方式安装 rtl8723be wifi 驱动:

问题:自动升级内核后,重启系统该 wifi 驱动会失效,需要重新安装.

ubuntu18.04 正确安装 rtl8723be 驱动步骤:

1 先安装好需要编译的东西
sudo apt-get install linux-headers-generic linux-headers-$(uname -r) gcc g++ build-essential git 

2 cd切换到需要放rtlwifi_new 到目录下 ，再执行
git clone http://github.com/lwfinger/rtlwifi_new.git

3 先停止网路
sudo service network-manager stop

如果不是首次安装该驱动,在第3步后执行
$ sudo modprobe -rfv rtl8723be
删除卸载老的无线网卡驱动

4 cd 到 rtlwifi_new 目录下执行
sudo make
sudo make install
sudo modprobe -v rtl8723be fwlps=0 ips=0

5 重启
sudo reboot 

6 确认是否关闭 fwlps=N ips=N
systool -v -m rtl8723be

如果查看 fwlps=Y ips=Y 的话就 
echo "options rtl8723be ips=0 fwlps=0" | sudo tee /etc/modprobe.d/rtl8723be.conf

这样首次安装rtl8723be 驱动 就完成了。

遗留问题:自动升级内核后,重启系统该 wifi 驱动会失效,需要重新安装 wifi 驱动.

dkms 方式安装 rtl8723be wifi 驱动:

我们可以这样利用 dkms 自动更新和升级内核都不需要 reinstall wifi driver.

先需要安装dkms
sudo apt install dkms 
1  git 下载rtlwifi_new
git clone -b extended https://github.com/lwfinger/rtlwifi_new.git

2 拷贝rtlwifi_new到/usr/src/ 目录下
sudo cp -R rtlwifi_new/ /usr/src/

3 dkms add
cmd@TR:/usr/src$ sudo dkms add ./rtlwifi_new
              Creating symlink /var/lib/dkms/rtlwifi-new/0.6/source ->/usr/src/rtlwifi-new-0.6
               DKMS: add completed.

4 dkms install 
cmd@TR:/usr/src$ sudo dkms install rtlwifi-new/0.6

Kernel preparation unnecessary for this kernel. Skipping...

Building module:
cleaning build area....(bad exit status: 2)
make -j8 KERNELRELEASE=4.15.0-34-generic -C /lib/modules/4.15.0-34-generic/build M=/var/lib/dkms/rtlwifi-new/0.6/build..............
cleaning build area...(bad exit status: 2)

DKMS: build completed.

rtl_pci.ko:
Running module version sanity check.
- Original module
- Installation
- Installing to /lib/modules/4.15.0-34-generic/updates/dkms/

rtl_usb.ko:
Running module version sanity check.
- Original module
- Installation
- Installing to /lib/modules/4.15.0-34-generic/updates/dkms/

rtlwifi.ko:
Running module version sanity check.
- Original module
- Installation
- Installing to /lib/modules/4.15.0-34-generic/updates/dkms/

btcoexist.ko:
Running module version sanity check.
- Original module
- Installation
- Installing to /lib/modules/4.15.0-34-generic/updates/dkms/

halmac.ko:
Running module version sanity check.
- Original module
- Installation
- Installing to /lib/modules/4.15.0-34-generic/updates/dkms/

phydm_mod.ko:
Running module version sanity check.
- Original module
- Installation
- Installing to /lib/modules/4.15.0-34-generic/updates/dkms/

rtl8188ee.ko:
Running module version sanity check.
- Original module
- Installation
- Installing to /lib/modules/4.15.0-34-generic/updates/dkms/

rtl8192c-common.ko:
Running module version sanity check.
- Original module
- Installation
- Installing to /lib/modules/4.15.0-34-generic/updates/dkms/

rtl8192ce.ko:
Running module version sanity check.
- Original module
- Installation
- Installing to /lib/modules/4.15.0-34-generic/updates/dkms/

rtl8192cu.ko:
Running module version sanity check.
- Original module
- Installation
- Installing to /lib/modules/4.15.0-34-generic/updates/dkms/

rtl8192de.ko:
Running module version sanity check.
- Original module
- Installation
- Installing to /lib/modules/4.15.0-34-generic/updates/dkms/

rtl8192ee.ko:
Running module version sanity check.
- Original module
- Installation
- Installing to /lib/modules/4.15.0-34-generic/updates/dkms/

rtl8192se.ko:
Running module version sanity check.
- Original module
- Installation
- Installing to /lib/modules/4.15.0-34-generic/updates/dkms/

rtl8723ae.ko:
Running module version sanity check.
- Original module
- Installation
- Installing to /lib/modules/4.15.0-34-generic/updates/dkms/

rtl8723be.ko:
Running module version sanity check.
- Original module
- Installation
- Installing to /lib/modules/4.15.0-34-generic/updates/dkms/

rtl8723de.ko:
Running module version sanity check.
- Original module
- Installation
- Installing to /lib/modules/4.15.0-34-generic/updates/dkms/

rtl8723-common.ko:
Running module version sanity check.
- Original module
- Installation
- Installing to /lib/modules/4.15.0-34-generic/updates/dkms/

rtl8821ae.ko:
Running module version sanity check.
- Original module
- Installation
- Installing to /lib/modules/4.15.0-34-generic/updates/dkms/

rtl8822be.ko:
Running module version sanity check.
- Original module
- Installation
- Installing to /lib/modules/4.15.0-34-generic/updates/dkms/

depmod...

DKMS: install completed.

5 拷贝编译生成的相关到  /lib/firmware/rtlwifi/
cmd@TR:/usr/src$ sudo cp /usr/src/rtlwifi-new-0.6/firmware/rtlwifi/* /lib/firmware/rtlwifi/

6 sudo depmod -a

7 echo "options rtl8723be ips=0 fwlps=0" | sudo tee /etc/modprobe.d/rtl8723be.conf

8 sudo modprobe -v rtl8723be fwlps=0 ips=0

9 重启  sudo reboot