Macbook won't detect Acer X193w

I connect my Macbook to an Acer via MDP to VGA, the screen goes blue, and the monitor doesn't detect the macbook. This also occurs when I connect to my TV. Any I deas?

HOW did you connect your MacBook to the Acer? What model MacBook Pro? What adapter do you have?
HOW did you connect to the TV?
Just to clarify... monitors do not detect a computer.... the computer detects the monitor by reading something called the EDID from the monitor which provides information regarding the dimensions and refresh rate, then the computer drives the montor.
Did you select the proper input on the TV to receive the signal from the MacBook Pro? Most TVs hav multiple inputs.

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Hello everyone,
I hope I can find help here... I couldn't find any in Apple Stores...
_+*If you don't want to read the long text, there are some cliff notes below*+_
I have a problem with my 42" Toshiba LCD TV.
Here's my setup:
MacBook 13" Unibody with 4GB RAM, Snow Leopard 10.6.4 and all the latest updates.
I used to use it as my movie display, only plugging it in when watching a movie etc... For work I am using a Dell 2209WA, which is still working perfectly with exactly the same cable configuration.
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1. Mini-Display Port to DVI
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3. Plugged in into my TV
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_+*Here are the Cliffnotes of what I've done and what's going on:*+_
MacBook won't recognize/detect Toshiba TV
MacBook recognizes/detects Dell TFT with same cable configuration
MacBook works fine with other TVs
I changed cables
I changed HDMI ports
I tried another adapter (DisplayPort)
PRAM and SCM reset without success
Deleting display profiles without success
I tried every Snow Leopard Release from 10.5.8 to 10.6.4
SwitchResX did not work
I restored my TV's standard configuration, and turned any auto image adjustion off
checked whether MacBook is concerned by nvidia callback - negative
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I don't know what to do, is there anyone who can help me? Any advice is greatly appreciated!
Regards from Germany
dohdoh

dohdoh1985, I have the exact same problem also! I recently bought a 42" RCA LCD TV. I connected my MacBook Pro to my TV using a Dynex Mini DisplayPort to HDMI adapter that I got from BestBuy. It worked great until I upgraded to Mac OS 10.6.4 and then it suddenly stopped working. Same TV, same settings, same cables, same adapter. Nothing changed since the last time it worked except that my OS was upgraded to 10.6.4, so i am assuming that is the culprit. The symptoms are EXACTLY the same as what dohdoh1985 described; when I plug in the TV, the laptop display flashes (3 times) as though it is detecting an external display and the picture on the TV briefly goes from blue to black for about 1 second then back to blue. The TV does not appear in the display menu / control panel and there is no sign that the MacBook detected it. I went through the usual troubleshooting steps (reset PRAM, checked connections, tv settings, etc) but nothing worked. Other HDMI sources (i.e. Blu-ray player) work fine on the TV using the same HDMI cable on the same port so there is nothing wrong with the cable, the TV or the TV's input settings.
Meanwhile, I can still connect my MacBook to my external ViewSonic monitor at work without any problems. It's just the TV that's not working.
I cancelled my cable subscription a while ago since I only watch shows online nowadays and this was my only way of watching TV shows, so I'm quite upset.
Apple, please help!

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[s]

The warranty must be close to running out. Take it ASAP to the Apple Store or AASP and have it checked.

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I just upgraded my operating system on my MacBook Air and now my laptop won't detect my Toshiba 1T external hard drive, how to solve this problem?

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MacBook suddenly won't detect my display, Using Mini Display Port to VGA?

MacBook suddenly won't detect my display, Using Mini Display Port to VGA?

dohdoh1985, I have the exact same problem also! I recently bought a 42" RCA LCD TV. I connected my MacBook Pro to my TV using a Dynex Mini DisplayPort to HDMI adapter that I got from BestBuy. It worked great until I upgraded to Mac OS 10.6.4 and then it suddenly stopped working. Same TV, same settings, same cables, same adapter. Nothing changed since the last time it worked except that my OS was upgraded to 10.6.4, so i am assuming that is the culprit. The symptoms are EXACTLY the same as what dohdoh1985 described; when I plug in the TV, the laptop display flashes (3 times) as though it is detecting an external display and the picture on the TV briefly goes from blue to black for about 1 second then back to blue. The TV does not appear in the display menu / control panel and there is no sign that the MacBook detected it. I went through the usual troubleshooting steps (reset PRAM, checked connections, tv settings, etc) but nothing worked. Other HDMI sources (i.e. Blu-ray player) work fine on the TV using the same HDMI cable on the same port so there is nothing wrong with the cable, the TV or the TV's input settings.
Meanwhile, I can still connect my MacBook to my external ViewSonic monitor at work without any problems. It's just the TV that's not working.
I cancelled my cable subscription a while ago since I only watch shows online nowadays and this was my only way of watching TV shows, so I'm quite upset.
Apple, please help!

Macbook won't detect Acer X193w

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