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