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Ubuntu Black screen error

Ubuntu frozen BLACK SCREEN ERROR


If you have a black screen after your upgrade from Ubuntu 18.04 to Ubuntu 20.04 or from Ubuntu 19.10 to Ubuntu 20.04 or any version to the latest version.
Or
If you have a frozen black screen on startup.
Here is my tip to overcome this problem!

1. Power OFF your system.
2. Power ON again and press ESC.

Go to the GNU GRUB screen, where you can choose the OS you want in your system.



3. Choose Advanced Options for Ubuntu
You will be prompted to the screen below.


 4. Choose a RECOVERY MODE
  • If you have a startup black screen error, 
            Choose the current version's recovery mode (the one on the top)
  • If you have an after update black screen error,
            Choose any of the previous version's recovery mode (excluding the one on the top)

Press ENTER
The process starts.

5. Choose Recovery method
After successfully completing the process, it prompt to the screen below


Where you should choose REPAIR BROKEN PACKAGES
Press ENTER
(Optionally, Press "Y" when it asks whether you need the upgraded version)

6. Reboot the system
After the successful completion of the process, it again prompts to the screen below.

Choose RESUME NORMAL BOOT
Press ENTER

7. Choose UBUNTU on startup
When the GNU GRUB screen appears, select Ubuntu.
   

 (Note that purple color indicates there is some working version of Ubuntu installed)
Wait for it to load.
Your system is ready to go!
Ubuntu 20.04

 Good Luck!

 P.S.: I always have black screen error whenever I upgrade my system to the latest ubuntu version.
I followed this step and recovered my system twice (18.04 ->19.10 and 19.10 ->20.04). 
Hope it works for you too!

 P.C.: Google Images
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