Mini displayPort to VGA wont detect DELL E228WFP

i bought a brand new mini display to VGA adapter for my late 2008 macbook pro 2.53 connecting to dell e228wfp wont do a thing.
just wont work,
also not on a sharp prjector.
i tried booting with the lid closed and i get the grey startup screen on my dell but then it glitches away...
in Displays menu, the detect screens doesnt do a thing.
this is sooo frustrating as im involved in a huge project witch is stuck on this matter.

Is the monitor working? Tried its self-test?
Self-Test Feature Check (STFC)
Your monitor provides a self-test feature that allows you to check whether your monitor is functioning properly. If your monitor and computer are properly connected but the monitor screen remains dark, run the monitor self-test by performing the following steps:
Turn off both your computer and monitor.
Unplug the video cable from the back of the computer. To ensure proper Self-Test operation, remove both Digital (white connector) and the Analog(blue connector) cables from the back of the computer.
Turn on the monitor.
You should get bar test patterns ....

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This is a brand new MacBook Pro (15-inch, mid-2012) just received. I suspect that this is a hardware problem as:
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Have a New MacBook Pro - Trying to get it to work with the mini DisplayPort to VGA cable on a DELL 2100MP Projector. Can not get anything to happen. The DELL Projector works fine with a PC Laptop plugged VGA to VGA and or a PC Desktop plugged VGA to VGA cable. The desktop PC is using Analog RBG 1024 x 768 75Hz.
The MacBook Pro and the mini Display Port works fine on various monitors around the office, just can't get anything to happen on the Projector?

Hi tforbes7,
When you plug an external display into a new unibody MacBook Pro (15" or 17") the graphics circuitry in the computer decides whether the external display is an analog display or a digital display, based on the adaptor that you've plugged in. *It does support both analog and digital.* The Apple rep you spoke to misspoke themselves. A VGA connection is always analog, and a DVI connection is always digital.
The problem here is that your 17" MBP only detects the mini-DisplayPort to DVI adaptor. So, because DVI is an all-digital signal, the MBP sends out the digital signal. The VGA adaptor cannot deal with this video signal, and so the video is not able to be passed on to the projector.
The solution, of course, is to purchase a mini-DisplayPort to VGA adaptor for use with VGA external displays, including projectors. You cannot use a mini-DisplayPort to DVI adaptor and a DVI to VGA adaptor in tandem. I myself use a mini-DisplayPort to VGA adaptor (for greater compatibility) and it has worked with every external display I have tried as of yet. When you plug in the mini-DisplayPort to VGA adaptor, an analog signal that is compatible with the analog display is outputted from the computer.
The bottom line is this: If you need to connect a projector or external display, choose the best quality connection "method" that is common to both devices. If your projector supports DVI, you should use the mini-DisplayPort to DVI adaptor that you already have, and bypass VGA entirely. If your projector only supports VGA, then you must purchase a mini-DisplayPort to VGA adaptor for use with that projector. It should work.
One more thing:
Make sure you upgrade the firmware on the mini-DisplayPort to VGA adaptor if you do indeed need to purchase one. This upgrade will show up in Software Update when you have the adaptor plugged into your MBP and is necessary for compatibility with some external displays.
If you have any further questions or require clarification please don't hesitate!
--Travis

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By any chance were you using a VGA->DVI adapter when trying to use the Mini-DisplayPort->VGA adapter? As in Mini-DisplayPort->VGA->DVI?
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Macbook air Mini DisplayPort to VGA Adapter connectivity issues

Hi pple,
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I am experiencing the same kind of problem... only with projectors. Some projectors will display the screen and then others wont even register with the MacBook Air.
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Does Mini DisplayPort to VGA adapter support DDC/CI?

I have a Mac Pro and a MacBook5,1.
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With a capable software I'm able to set brightness and contrast of the monitor without using monitor's OSD (thanks to DDC/CI communication).
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I'm no more able to set brightness and contrast and the app reports that monitor isn't DDC/CI capable.
I'm sure its not an issue related to the app that I'm using to set brightness and contrast. It detects correctly both of the monitor (the internal and the external one) and I'm sure that I'm sending DDC/CI commands to the external monitor and not to the internal one.
So, does Mini DisplayPort to VGA adapter support DDC/CI, and therefore passthrough its signal?
Or is it a problem of MacBook and its Mini DisplayPort which does not support DDC/CI at all? I don't think so.
I hope you can help me.
Regards
Andrea

No. Unlike DVI, which in the DVI-I configuration has both digital and analog pinouts, DisplayPort (and mini-DisplayPort) are purely digital. Mini-DP to DVI then DVI to VGA will not work. If you look carefully at the Apple Mini-DisplayPort to DVI adapter, you'll notice it's a DVI-D connector - digital pins only.
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It's not being detected: there's no Arrangement tab in Displays and clicking Gather Windows doesn't show other window.
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By any chance were you using a VGA->DVI adapter when trying to use the Mini-DisplayPort->VGA adapter? As in Mini-DisplayPort->VGA->DVI?
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Thank you for your message.
1. Both monitors only have VGA input.
2. The other adapter, Mini-DVI to VGA has always worked properly.
3. The Mini DisplayPort to VGA adapter is an Apple original product I bought at an Apple store. I bought 2 adapters.
4. Actually I have 2 Mini DisplayPort to VGA adapters: The one I use with my Mac Mini, and another adapter I use to connect my Mac Book Pro to a Panasonic projector.
5. I have tried using both adapters, and the flickering problem is present using either adapter.
6. I believe the flickering problem is definitely something that needs to be addressed and solved by Apple. The adapter is its product, and should work as advertised, no matter what version of OSX I am running. Please remember that there was no flickering before I upgraded to the latest OSX Mountain Lion.
7. I do not believe buying an adapter from another manufacturer, as you suggest, would solve the problem.
Thank you for your help.

Thunderbolt display: devices not discovered after using Mini DisplayPort–to–VGA adapter

I have an interested problem related to using my MacBook Air in clamshell (closed) mode, connected to a Thunderbolt display. The problem appears to be related to moving my MacBook air between my office and my home.
At the office, I use the MacBook Air with an external VGA display, connected via the Mini DisplayPort–to–VGA adapter. At home, I use the MacBook Air together with a Thunderbolt display. An Apple USB keyboard is also connected to the display.
Mini DisplayPort–to–VGA adapter implicated
The following sequence of events causes the problem to occur:
Use the MacBook air (open) together with a VGA display, connected via a Mini DisplayPort–to–VGA adapter (depicted at right);
Put the MacBook Air to sleep by closing the lid, and disconnect the Mini DisplayPort–to–VGA adapter (I am not sure if the order of these two steps is significant—I usually perform them almost simultaneously when packing up my MacBook Air and getting ready to leave the office); and
With the MacBook Air still closed, connect it to a Thunderbolt display with a connected USB keyboard.
At this point, I would expect to be able to wake up the MacBook Air by tapping on the space bar of the keyboard. However, what I have observed is that this does not wake the MacBook Air.
I can wake the MacBook however by moving or clicking a Bluetooth mouse that is paired with the MacBook Air.
At this point, although the MacBook Air is awake, and the display is working, the USB keyboard connected to the display still does not work. This is the problem, in a nutshell.
Unplugging the USB keyboard from the display, and plugging it back in causes the MacBook Air properly to identify the keyboard.
I used Apple System Profiler to save a list of identified devices at two points in time:
Immediately after waking the MacBook Air by moving the Bluetooth mouse (at which point the USB keyboard was not working); and
After unplugging and plugging in again the USB keyboard (at which point the USB keyboard worked fine).
Many devices are enumerated in the second list that are missing from the first. For example:
Keyboard Hub@fe110000 <class IOUSBHubDevice, id 0x1000378ef, !registered, !matched, inactive, busy 3 (37993 ms), retain 6>
AppleUSBHub <class AppleUSBHub, id 0x1000378f2, !registered, !matched, inactive, busy 1 (37987 ms), retain 6>
IOUSBInterface@0 <class IOUSBInterface, id 0x1000378f4, !registered, !matched, inactive, busy 1 (37986 ms), retain 6>
Keyboard Hub@fe110000 <class IOUSBHubDevice, id 0x1000378f6, registered, matched, active, busy 0 (7 ms), retain 10>
AppleUSBHub <class AppleUSBHub, id 0x1000378f9, registered, matched, active, busy 0 (1 ms), retain 9>
IOUSBInterface@0 <class IOUSBInterface, id 0x1000378fb, !registered, !matched, active, busy 0, retain 7>
Apple Keyboard@fe112000 <class IOUSBDevice, id 0x1000378fd, registered, matched, active, busy 0 (112 ms), retain 11>
and many child devices…
Using the Mini DisplayPort–to–VGA adapter appears to be a necessary step to causing this problem to occur. If I merely disconnect the MacBook Air from the display, let it go to sleep, and then reconnect it again, the USB keyboard will work immediately and can be used to wake the computer from sleep.
Some devices are discovered even when the computer is in sleep mode. This is how it should work.
The problem appears to be that when a Mini DisplayPort–to–VGA adapter has been used since the last time the computer was connected to a Thunderbolt display, the MacBook air does not discover devices completely when it is again connected to the Thunderbolt display while in sleep mode.
Can anyone else reproduce this problem?

Hi glraczon.support,
It sounds like the external display you are using (projector) operates at a smaller resolution than your MacBook Pro. You may want to configure the display preferences in System Preferences for the external projector.
Here is an article that may help you with that process:
OS X Mountain Lion: About the Display pane of System Preferences
http://support.apple.com/kb/HT5369
Thanks,
Matt M.

No image on screen using Mini DisplayPort to VGA Adapter

Received mini today. After unboxing, read through the packet. Then began to hook everything up as directed. I used a Mini DisplayPort to VGA Adapter to connect the monitor from our now dead desktop to the mini. After double checking all connections, I hit the power button. I immediately heard the apple chime. Then the monitor showed the grey apple start up screen. Suddenly the monitor went black and said it was going into sleep mode. I can't get it out of sleep mode when connected to the mini. It is NOT the monitor or the adapter. I plugged the monitor straight into a netbook and it worked. Then, I plugged the monitor using the adapter into my MacBook Pro and also got it to work that way. So I tried replugging the adapter into the mini. Still can't get an image on the screen. I can't complete set up or use mini because I can't get an image. Any suggestions or ideas? I will call apple in the morning if I can't figure it out tonight. But I'm hoping someone can give me suggestions. Thanks for your help!

I had the same issue when I bought my mac mini last week apart from I wasn't even getting the initial grey screen. I went back to the Apple shop and they gave me another mini and fired it up in the shop using the adaptor on an old VGA monitor. It worked perfectly.
When I got home I set it all up again and still had the same issue. I nearly threw out a couple of monitors as I thought they were broken.
However, had a look around the web and found this suggestion:
Shut down the mac and disconnect the adaptor from it. Now fire the mac up and let it boot up FULLY. Once it has had a chance to boot up fully, only then plug the adaptor in.
Worked for me and I haven't had the issue since (touch wood). Hope this helps.

Using Mini DisplayPort to VGA Adapter to connect Macbook Pro (2009) for a presentation via projector.

When I connect my Macbook Pro (2009 model) using a Mini DisplayPort to VGA adapter to display a presentation via projector, only the top-left portion of what is displayed on my Macbook Pro's screen is displayed on the projector, as though I zoomed in on that portion of my screen. The projector is on and the adapter and the cable that connects the adapter to the projector machine is correctly connected. Any suggestions on how to fix this problem?

Hi glraczon.support,
It sounds like the external display you are using (projector) operates at a smaller resolution than your MacBook Pro. You may want to configure the display preferences in System Preferences for the external projector.
Here is an article that may help you with that process:
OS X Mountain Lion: About the Display pane of System Preferences
http://support.apple.com/kb/HT5369
Thanks,
Matt M.

Mini displayPort to VGA wont detect DELL E228WFP

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