Selon le lien donné par xubu au post #17
In folder manager, right-click RealtekWiFiAdapterSoftware-master.zip and go to "Extract Here"
Once extracted, open up a terminal and cd into RealtekWiFiAdapterSoftware-master/RTL88x2BU_WiFi_linux_v5.1.7_19806
ENSURE THAT NO SPACES EXIST ANYWHERE IN THE ENTIRE PATH NAME, OR ELSE THE FOLLOWING STEPS MAY FAIL. LINUX IS NOTORIOUS FOR REQUIRING THAT COMMAND-LINE COMPILATION AND INSTALLATION TOOLS RUN ONLY IN DIRECTORIES NOT CONTAINING SPACES. Once in the directory which contains the install.sh file, run the following commands:
chmod +x install.sh
sudo ./install.sh
Done! Click the WiFi symbol at the top of the screen in Ubuntu and select the hotspot you'd like to connect to with the new "Realtek USB3.0 802.11ac 1200M Adapter" now showing up in the menu.
Tu décompresses l'archive. Tu vas dans le répertoire qui a été créé. Puis tu fais :
chmod +x install.sh
sudo ./install.sh
La première commande permet de rendre le script install.sh exécutable, la seconde lance le script d'installation.
Donne les retours complets de toutes les commandes STP