I am using Ubuntu 16.04LTS and had a similar behavior. I have External Dell monitor and whenever I was visiting sites that has flash, or moving the windows my monitor was flickering like crazy. Setting the refresh rate to 60Hz made everything fine.
xrandr -s 1920x1080 -r 60.00 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/349943 Title: Screen blinks randomly on external monitor To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/349943/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
