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MBA cannot recognize displays

Psilocybin

Psilocybin

macrumors 6502a
Original poster
Jan 16, 2011
592
0
Ontario, Canada
Anyone have a problem with their MBA not recognising 2nd displays?
I plug my adapter into the mini display port and the screen on my air flashes/ turns blue for a second than back to the desktop and all my displays just say no signal

Tried 2 different dvi cables I'm returning my mdp to dvi adapter
 
Last edited:
Psilocybin said:
no it does not
Click to expand...

Have you tried powering down the MBA with the new display connected and restarting...that worked for me with the Samsung P2770FH that my new 27" ACD just replaced and a Moshie MDP>HDMI adapter...no problems with the ACD as it was recognized immediately (obviously, no adapter necessary)
 
Hellhammer said:
Have you checked Displays section in System Preferences? Does the 2nd display appear there?
Click to expand...

Ronnoco said:
Have you tried powering down the MBA with the new display connected and restarting...that worked for me with the Samsung P2770FH that my new 27" ACD just replaced and a Moshie MDP>HDMI adapter...no problems with the ACD as it was recognized immediately (obviously, no adapter necessary)
Click to expand...

ya tried that as well no go....
im getting the adapter replaced right now....i guess ill be calling apple if this doesnt work
 
apparently it is a problem with the port i called apple because it still didnt work with a new adapter.

need to get the port looked at
 
What I also read was a lot of people are having problems with mdp to dvi, maybe it is because I'm converting it to VGA? I bought a mdp to VGA going to try this. If I can get this to work I'll wait till my warranty is almost over to get a new air
 
Psilocybin said:
What I also read was a lot of people are having problems with mdp to dvi, maybe it is because I'm converting it to VGA? I bought a mdp to VGA going to try this. If I can get this to work I'll wait till my warranty is almost over to get a new air
Click to expand...

I've only used MDP>VGA (Apple brand) and MDP>HDMI (Moshie) and both worked well, but I did try using a HDMI to DVI cable to connect to my Samsung's DVI port and it worked fine (that was with the Moshie MDP>HDMI adapter)...
 
Ronnoco said:
I've only used MDP>VGA (Apple brand) and MDP>HDMI (Moshie) and both worked well, but I did try using a HDMI to DVI cable to connect to my Samsung's DVI port and it worked fine (that was with the Moshie MDP>HDMI adapter)...
Click to expand...

Maybe it's just fussy, I'll try this and report back
 
So were you using mDP to DVI + DVI to VGA adapter? That might not work as IIRC the Apple's mDP to DVI adapter is DVI-D, meaning that it cannot carry analog signal that VGA uses.
 
Hellhammer said:
So were you using mDP to DVI + DVI to VGA adapter? That might not work as IIRC the Apple's mDP to DVI adapter is DVI-D, meaning that it cannot carry analog signal that VGA uses.
Click to expand...

You are correct. That is why they also sell a miniDP-to-vga adapter. Chaining them together that way is never a good idea...to many points at which something might go pear shaped. Simpler is better.
 
Jamie37211 said:
You are correct. That is why they also sell a miniDP-to-vga adapter. Chaining them together that way is never a good idea...to many points at which something might go pear shaped. Simpler is better.
Click to expand...

hmm..i dont know why i missed that well thanks for the explanation guys
 
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