It seems like just yesterday we heard from David Thomas that his Samsung Syncmaster 910 MP display wasn't working with his shiny new 2009 Mac mini. Oh, wait, it was yesterday -- and David's not alone, judging by the traffic on Apple's support boards. VGA display owners who are using a Mini DisplayPort-VGA adapter should be aware that older displays seem to be having some trouble with the newfangled setup; in fact, Apple's troubleshooting steps for lack of video on the mini suggest replacing your display if it's not lighting up with the mini, even though it may still work with other machines. If your existing display is a Samsung or is more than four years old, you may want to cross-check with Apple before trying to use it with a new mini.

There's some light at the end of the tunnel, however. While it hasn't appeared on Apple's download page for the mini yet, reader Nikolay sent in word that the Mini DisplayPort to VGA Firmware Update is showing up for him in Software Update on his MacBook Pro. Since one of the listed fixes is "no video on some external displays," if you've got the VGA adapter in use and are having video troubles you may want to borrow a monitor long enough to run the update and see if that clears the issue for you.

Thanks David & Nikolay

Yesterday, our buddy David Chartier at Ars and Sam Oliver at AppleInsider both publicized an issue that's been burning up the support boards for a while now: iTunes video rentals and purchases in HD are flagged for HDCP control, and in cooperation with the new Mini DisplayPort connector on the MacBook and MacBook Pro unibody models, those movies and TV shows are refusing to play back on non-compliant external displays.

In this case, 'compliant' means HDMI or recent-vintage DVI, but even monitors or TVs that support HDCP may not properly negotiate with the DisplayPort connector to give iTunes and QuickTime the all-clear signal (if so, quitting and relaunching iTunes once the display is hooked up may clear the playback hold). Equally annoying: HDCP is only supposed to apply to 'high-value' digital streams, meaning standard-def purchases and rentals on the iTunes store should be out of scope... but some reports indicate that both the HD and SD instances are flagged, blocking playback on anything but the laptop's internal display or a straight-thru HDMI connection. Argh!

While Apple TV users with unconventional output setups have been dealing with this aggravation since the beginning of the year, MacBook and MBP owners have largely steered clear, even as the HD content on iTunes became available for playback on the laptops. Now that the hardware and software have come into sync on the unibody models, Apple's compliance with HDCP -- a necessary but appalling condition of the content companies that deliver the HD movies and TV shows -- is beginning to close out the 'analog hole' and cause real aggravation for laptop owners with legitimate use cases. Talk about a bag of hurt.