Rohit, Please update your system:
sudo apt update sudo apt full-upgrade and then reboot. Does the problem still occur after that? If so then please run: uname -a and tell us what it says. ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete ** Changed in: mutter (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1909496 Title: [i915] Blinking unlock screen To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1909496/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs