Thanks for the video. It does look just like Visual Alerts is on -- I can reproduce the same flicker on my own machine. This is only unusual if you definitely have visual alerts turned off. To check that, please run this command and send us the output:
gsettings list-recursively | grep visual-bell -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1869549 Title: [nvidia] Whenever a sound needs to be played the screen blanks out To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1869549/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
