I have been experiencing an intermittent screen flickering/glitching. The problem occurs where I use, or leave the laptop on for several hours, until I let the laptop rest (i.e. shut it down and leave it off) for several days, then promptly starts again with a couple of hours of use.
The flickering/glitching affects the whole screen. I don't think the attached image does the problem much justice. The whole image on screen appears to shake, moving up and down, ghosting between two 'screens'. The problem started with faint horizontal lines across the screen and then escalated within a matter of hours.
I have taken the Macbook Pro into an Authorised Apple Service Provider who were unable to diagnose the fault with their diagnostic systems; as a result they weren't prepared to replace any hardware. The service provider has proved fruitless. Has anyone else had a similar experience?