Half of my laptop screen flickers intermittently - it happens for a bit then goes away, and is of varying degrees of severity when it does happen. It has only started happening recently. I've had a look around and think it's a connector issue, I've updated all my drivers etc, and often work with a screen connected to my laptop and there has been no flickering on the second screen / monitor, regardless of whether it was connected via dock or straight to monitor via HDMI. Laptop is Dell Latitude 3490. Thank you all lovely tech support people!