I believe I'm experiencing this issue as well. If lightdm loads up, I enter half my password and the flickering happens, I type the rest of my password and am not able to login. I believe the flickering interrupts my typing somehow. When I retype my password entirely after the flickering, it works fine.
Ubuntu MATE 16.04 Ubuntu MATE desktop 1.12.1 CPU: Intel Core i7-6500U CPU @ 3.1GHz GPU: Mesa DRI Intel(R) HD Graphics 520 (Skylake GT2) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1531224 Title: lightdm-gtk-greeter flickers once little after lightdm starts To manage notifications about this bug go to: https://bugs.launchpad.net/lightdm-gtk-greeter/+bug/1531224/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
