Red symbol on top on your Ubuntu Desktop Issue

## Red symbol on top put the below command in terminal :-

* sudo apt-get -f install


## If the Issue still Present on your Ubuntu system then Follow the below Steps :-

1) Remove All Files from below apt/lists use below command for.
      - sudo rm -r /var/lib/apt/lists/*

2) Then Update the Files
      - sudo apt-get update.

3) Then use Below Command.
     - sudo apt-get -f install