It sounds like you are seeing the wrong virtual terminal. Please try Ctrl+Alt+F1 or Ctrl+Alt+F2. And please also attach a photo or video of the issue.
** Package changed: xorg (Ubuntu) => gdm3 (Ubuntu) -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1865254 Title: After fresh installation 19.10 on Dell vostro 15 3568 it is showing screen blinking when I try to unlock and locking with Super+L To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1865254/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp