Fix Ubuntu Black Screen: Complete Guide

To solve the Ubuntu black screen issue, you can try the following methods:

1. Check for system updates: access terminal mode by using the Ctrl + Alt + F2 shortcut, login to the system, and then execute the following commands to update the system:
   sudo apt update
   sudo apt upgrade
2. Reinstall Todesk: To reinstall Todesk, execute the following commands in terminal mode:
   sudo apt-get remove ubuntu-todesk
   sudo apt-get install ubuntu-todesk
3. Reset display settings by using the Ctrl + Alt + F2 keyboard shortcut to enter terminal mode, then log in to the system and execute the following command:
   sudo rm -rf ~/.config/monitors.xml
4. Check graphics card driver: Use the Ctrl + Alt + F2 key combination to enter terminal mode, then log into the system and execute the following command to check the graphics card driver:
   sudo ubuntu-drivers autoinstall

If the above methods do not resolve the issue, you can try selecting recovery mode at startup and performing repairs or reinstalling the operating system.