Mini Display port stopped working!?

[rawdawg]

I have a year old 17" MBP. I use it with a 24" Dell and have had no problems. Occasionally I hook it up to my HDTV with a long HDMI cable and a DVI to HDMI adapter.

Tonight I wanted to watch something so I unplugged the Dell and plugged in the TV, but nothing happened. I noticed on my MBP everything was on the one screen as if dual display was not working. I unplugged the mini display port, screen goes blue for a sec, and the same screen comes back up. Plug it back in, screen goes blue for a sec, and the same screen comes up. Repeat, same results. The Dell when unplugged says "no dvi signal" but plugged in is black.

Restarted 3 times, repaired permissions.... nothing.

Has anyone else encountered this?

 

[allforpiratebay]

Yeah,
I had gfxCardStatus installed and it was set on integrated - i encountered a similar situation. MBP only use discrete card to output.
Mite not be the case though.

 

[acribb]

Had the same issue on mine. Resetting the PRAM and NVRAM fixed it.

 

[circularforward]

Have you checked to see if your mdp-to-dvi adapter is ok? I had my mdp-to-dvi adapter go out on me and had it replaced by Apple.

 

[rawdawg]

reset PRAM, didn't work.

Went to Apple Store, turned out my adpater (MiniDisplay to DVI) cable died.

The genius told me be careful with HDMI TV's as since they carry a current (when using a HDMI to DVI adapter) they can blow your adapter.

They replaced it and it's working fine now!

 

[circularforward]

reset PRAM, didn't work.

Went to Apple Store, turned out my adpater (MiniDisplay to DVI) cable died.

The genius told me be careful with HDMI TV's as since they carry a current (when using a HDMI to DVI adapter) they can blow your adapter.

They replaced it and it's working fine now!

Hmm, that's good to know. Also, when I had my problem, I looked online, and it seemed quite a few had their adapters die on them. It doesn't seem to be an uncommon problem.

 

[DanMacApple]

I use a direct mini display port to HDMI adapter with no problems, you might want to try out one of those adapters.