Inside every Mac — the one I’m writing this one, the one you’re reading this on, the one next to you at the cafe — is a little chip called the SMC, or system management controller. If you’ve ever had a problem related to your Mac’s performance or power supply, resetting the SMC is usually the first thing people suggest.
For most of us, worrying about the ‘security’ of our SMC is pretty harmless. While your SMC can be hacked, it’s a Mission Impossible style process that is only really likely to occur if you’re so important that the techno-elite of another country’s government decides they want to know what’s on your laptop.
Here’s where it gets funny, though. Let’s say China did want to hack your Mac’s SMC… how might they start? By entering the name of a Harry Potter spell!
I’ve mostly been very happy with my migration to Lion, but I did get bit with one bug after the upgrade: for the life of me, I couldn’t get sound to output through HDMI when using my Kanex Mini DisplayPort to HDMI Adapter. That meant the days of hooking my 11-inch MacBook Air to my 47-inch 1080p HDTV were at an end.
I wasn’t alone. Apple’s support communities are filled with threads from frustrated Lion upgraders who suddenly lost the ability to pump sound through their HTPCs. HDMI sound also stopped working on my girlfriend’s MacBook when she upgraded to Lion. It’s obviously a widespread problem.
Luckily, today I finally figured out how to fix the issue, and it was remarkably simple. Here’s how to get HDMI sound back into Lion.