On the subject of HDMI...
A bit OT so apologies...
I run an external monitor from a laptop connected through the HDMI port and I get regular "black screens" as I call them where the monitor goes completely blank for a second or two then the image returns. I can go hours without it happening then it might happen three or four times in the space of a few minutes. It's very annoying particularly when watching video.
This doesn't happen when the same monitor is connected through VGA but I'm limited on resolution then of course.
It's not a power-thing i.e. the monitor isn't going to standby and back or some such.
A quick Google suggests this isn't that uncommon but people usually get told it's a dodgy driver or card etc but the problem never seems to get resolved.
I'm of a mind that it might be the DRM related hand-shaking between the monitor and lappy (i.e this fails for some reason and the signal is cut) but I doubt there's a fix for that.
Also if the laptop goes to sleep it takes ages for the monitor to respond after it wakes up again, not so on VGA again.
Any experts in Register land that might have a solution or at least a handle on what the issue is?
Both the lappy and monitor are Acer btw (cue the never buy acer again.....talk)