External Display Issues

[JamesGorman]

Hey guys,

Lately I've been having some issues with my mac connecting to my display. I have it going through MDP > DVI. I haven't had issues before, and all of a sudden it just wont recognize my display. Could I be in need of an SMC or PRAM reset? Or is it something else. I've tested the cables and all work. I also know the monitor still accepts signals fine because I use it for other devices as well.
Any suggestions are appreciated.
Thanks.

 

[tjb1]

Hey guys,

Lately I've been having some issues with my mac connecting to my display. I have it going through MDP > DVI. I haven't had issues before, and all of a sudden it just wont recognize my display. Could I be in need of an SMC or PRAM reset? Or is it something else. I've tested the cables and all work. I also know the monitor still accepts signals fine because I use it for other devices as well.
Any suggestions are appreciated.
Thanks.

Do you have gfxcardstatus on?

 

[Hellhammer]

SMC and PRAM resets are always a good start

 

[JamesGorman]

Do you have gfxcardstatus on?

Yes

SMC and PRAM resets are always a good start

Thats what I was thinking, Ill try doing that and get back to you guys.

 

[tjb1]

To run an external display it must be using the nvidia card, wont work on integrated intel.

 

[JamesGorman]

To run an external display it must be using the nvidia card, wont work on integrated intel.

Yes, I was aware of this. And I always have it on dynamic switching anyway. But thanks for offering the tip.
Needless to say, I have reset both the PRAM and SMC, and the display now works. Thanks Guys!

 

[tjb1]

Yes, I was aware of this. And I always have it on dynamic switching anyway. But thanks for offering the tip.
Needless to say, I have reset both the PRAM and SMC, and the display now works. Thanks Guys!

K just wondering, I had mine set to Intel before and I couldnt get external to work and it was driving me nuts

 

[JamesGorman]

K just wondering, I had mine set to Intel before and I couldnt get external to work and it was driving me nuts

Any idea why it wont run on the intel?

 

[alust2013]

Any idea why it wont run on the intel?

Probably just firmware not enabling the display out unless it's on the nVidia chip.

 

[JamesGorman]

Probably just firmware not enabling the display out unless it's on the nVidia chip.

Yea, thats probably it. Not like their would be a point of running the intel when using and external anyway.

 

[dansorenson]

MacBook Pro using DVI-to-HDMI TV only shows screen saver on TV

My MacBook Pro - Core2Duo Model A1211 - when hooked up with a cable from its DVI output to the HDMI input on my flat screen only shows the screen saver on my TV. I can drag folders with the photos I want to show into the screensaver, and it will display them on the TV, but that doesn't give me much control over what I can show on the TV. Just wondering how to get whatever is on the MacBook Pro's screen on the TV. I want to be able to play videos and do photo slide shows.
Thanks.