1. Please get a working internet connection by ethernet, tethering or whatever means possible. Open a terminal and do:Code:
  2. sudo apt update sudo apt install build-essential git dkms git clone https://github.com/whitebatman2/rtl8821CU.git DRV_NAME=rtl8821CU DRV_VERSION=5.2.5.3 sudo mkdir /usr/src/${DRV_NAME}-${DRV_VERSION} git archive master | sudo tar -x -C /usr/src/${DRV_NAME}-${DRV_VERSION} sudo dkms add -m ${DRV_NAME} -v ${DRV_VERSION} sudo dkms build -m ${DRV_NAME} -v ${DRV_VERSION} sudo dkms install -m ${DRV_NAME} -v ${DRV_VERSION}Post back any errors, warnings, etc.“Oh, Ubuntu, you are my favorite Linux-based operating system“ –Dr. Sheldon Cooper, Ph.D., Sc.D.Adv Reply  
  3. December 7th, 2018#5varunkalia varunkalia is offlineFirst Cup of UbuntuJoin DateDec 2018Beans3Re: Driver for RTL8811 Wireless Adapter for Ubuntu 18.04Man ! I cannot describe how grateful I am . I have been looking for a solution for days now. Your solution worked perfectly ! You are the man . Thanks a lot !
    I just added one step. Everything else was smooth.sudo apt update
    sudo apt install build-essential git dkms
    git clone https://github.com/whitebatman2/rtl8821CU.git
    DRV_NAME=rtl8821CU
    DRV_VERSION=5.2.5.3
    sudo mkdir /usr/src/${DRV_NAME}-${DRV_VERSION}
    cd $DRV_NAME
    git archive master | sudo tar -x -C /usr/src/${DRV_NAME}-${DRV_VERSION}
    sudo dkms add -m ${DRV_NAME} -v ${DRV_VERSION}
    sudo dkms build -m ${DRV_NAME} -v ${DRV_VERSION}
    sudo dkms install -m ${DRV_NAME} -v ${DRV_VERSION}Adv Reply  
  4. December 7th, 2018#6chili555 chili555 is offlineUbuntu MemberJoin DateAug 2005LocationSouth Carolina, USABeans25,429DistroUbuntu 20.04 Focal FossaRe: Driver for RTL8811 Wireless Adapter for Ubuntu 18.04Quote Originally Posted by varunkalia Man ! I cannot describe how grateful I am . I have been looking for a solution for days now. Your solution worked perfectly ! You are the man . Thanks a lot !
    I just added one step. Everything else was smooth.

    sudo apt update
    sudo apt install build-essential git dkms
    git clone https://github.com/whitebatman2/rtl8821CU.git
    DRV_NAME=rtl8821CU
    DRV_VERSION=5.2.5.3
    sudo mkdir /usr/src/${DRV_NAME}-${DRV_VERSION}
    cd $DRV_NAME
    git archive master | sudo tar -x -C /usr/src/${DRV_NAME}-${DRV_VERSION}
    sudo dkms add -m ${DRV_NAME} -v ${DRV_VERSION}
    sudo dkms build -m ${DRV_NAME} -v ${DRV_VERSION}
    sudo dkms install -m ${DRV_NAME} -v ${DRV_VERSION}Ah! Yes! Good catch and thanks for pointing it out.Please use Thread Tools at the top to mark Solved. The searchers will appreciate it.“Oh, Ubuntu, you are my favorite Linux-based operating system“ –Dr. Sheldon Cooper, Ph.D., Sc.D.
Ubuntu-Seite RTL-Treiber über Terminal

https://wiki.ubuntuusers.de/WLAN/Karten/Realtek/