Mini to HDMI output no longer working after update

[mikeheenan]

I have a 17" unibody MBP (most current version) with 10.6.4, and I downloaded the recent firmware updates for the MBP's. Before I did this, the mini port to HDMI video/audio output was working perfectly, I could watch anything right off my MBP. After installing the updates, when I plug in the cable, my MBP flickers, goes blue, and then comes back, but the TV does not detect the signal from the laptop. In the Display and Sound menus in System Preferences, there's no option to set up a second display like there was before. Any suggestions?

 

[Eddyisgreat]

Are you using something like gfxStatus? Using the mDP -> DVI Adapter, i've found that after the update I need to switch the graphics adapter to get it to "wake up".

 

[mikeheenan]

Dude, good call, that was it! Thanks for the help!