ubuntu 18.04.1安装RTL8821CE无线网卡驱动_rtl8821ce 802.11ac无线网卡驱动安装

疫情期间闲下来无聊，把办公室的旧机器装了ubuntu，但是无法连接无线网。

打开终端 #查看无线网卡信息。 -i 是不区分大小写

　　新建wireless文件夹 mkdir wireless && cd wireless

在有线网的状态下载网卡驱动 或者直接 用U盘拷贝 下载连接 https://github.com/M000M/Driver-Realtek-RTL8821CE

然后编译 （整个编码安装过程需要在root权限下进行，即必须加上sudo)

　　安装命令sudo modprobe -a 8821ce 只要不提示错误就表示成功　reboot重启后WIFI就能收到信号了，上个图

wxm@wxm:~$ lspci | grep -i wireless
02:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8821CE 802.11ac PCIe Wireless Network Adapter
wxm@wxm:~/Downloads/rtl8821ce-master$ sudo make -j 12
make ARCH=x86_64 CROSS_COMPILE= -C /lib/modules/4.15.0-129-generic/build M=/home/wxm/Downloads/rtl8821ce-master  modules
make[1]: Entering directory '/usr/src/linux-headers-4.15.0-129-generic'
  CC [M]  /home/wxm/Downloads/rtl8821ce-master/core/rtw_cmd.o
  CC [M]  /home/wxm/Downloads/rtl8821ce-master/core/rtw_security.o
  CC [M]  /home/wxm/Downloads/rtl8821ce-master/core/rtw_debug.o
  CC [M]  /home/wxm/Downloads/rtl8821ce-master/core/rtw_io.o
  CC [M]  /home/wxm/Downloads/rtl8821ce-master/core/rtw_ioctl_query.o
  CC [M]  /home/wxm/Downloads/rtl8821ce-master/core/rtw_ioctl_set.o
  CC [M]  /home/wxm/Downloads/rtl8821ce-master/core/rtw_ieee80211.o
  CC [M]  /home/wxm/Downloads/rtl8821ce-master/core/rtw_mlme_ext.o
  CC [M]  /home/wxm/Downloads/rtl8821ce-master/core/rtw_mlme.o
  CC [M]  /home/wxm/Downloads/rtl8821ce-master/core/rtw_wlan_util.o
  CC [M]  /home/wxm/Downloads/rtl8821ce-master/core/rtw_mi.o
  CC [M]  /home/wxm/Downloads/rtl8821ce-master/core/rtw_vht.o
  CC [M]  /home/wxm/Downloads/rtl8821ce-master/core/rtw_pwrctrl.o
  CC [M]  /home/wxm/Downloads/rtl8821ce-master/core/rtw_rf.o
  CC [M]  /home/wxm/Downloads/rtl8821ce-master/core/rtw_recv.o
  CC [M]  /home/wxm/Downloads/rtl8821ce-master/core/rtw_sta_mgt.o
  CC [M]  /home/wxm/Downloads/rtl8821ce-master/core/rtw_ap.o
  CC [M]  /home/wxm/Downloads/rtl8821ce-master/core/rtw_xmit.o
  CC [M]  /home/wxm/Downloads/rtl8821ce-master/core/rtw_p2p.o
  CC [M]  /home/wxm/Downloads/rtl8821ce-master/core/rtw_tdls.o
  CC [M]  /home/wxm/Downloads/rtl8821ce-master/core/rtw_iol.o
  CC [M]  /home/wxm/Downloads/rtl8821ce-master/core/rtw_br_ext.o
  CC [M]  /home/wxm/Downloads/rtl8821ce-master/core/rtw_sreset.o
  CC [M]  /home/wxm/Downloads/rtl8821ce-master/core/rtw_btcoex_wifionly.o
  CC [M]  /home/wxm/Downloads/rtl8821ce-master/core/rtw_btcoex.o
  CC [M]  /home/wxm/Downloads/rtl8821ce-master/core/rtw_beamforming.o
  CC [M]  /home/wxm/Downloads/rtl8821ce-master/core/rtw_odm.o
  CC [M]  /home/wxm/Downloads/rtl8821ce-master/core/ef