Method: Install vm-tools
1. Right-click the mouse inside Ubuntu to open the terminal
2. Update apt-get (generally newly installed systems need to update apt-get)
sudo apt-get update
ps. If you cannot update, you can try changing the mirror station: Ubuntu system configuration mirror station
3. Uninstall the original vm-tools
sudo apt-get autoremove open-vm-tools
4. Install the latest version of vm-tools
sudo apt-get install open-vm-tools-desktop
5、Reboot Ubuntu
reboot