The Mini DisplayPort to VGA Adapter does not detect my external monitor.

Processor 2.5 GHz Intel Core i5
Memory 12 GB 1333 MHz DDR3
Graphics AMD Radeon HD 6750M 512 MB
Software Mac OS X Lion 10.7.4
I just purchased this dongle, and when I plug it into my thunderbolt port it doesnt do anything. It works for my MBP 2012 13'' which I just purchased today.
iMac 2011 21.5''

Hmmm, if once booting, you turn the Monitor OFF & back ON, does it see it?

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Does the "Mini DisplayPort to VGA Adapter" work with all Samsung tv models?

Does the "Mini DisplayPort to VGA Adapter" work with all Samsung tv models?

It's a VGA adapter. Nothing special about that. If your Samsung monitor supports VGA then it will work.
But why not go completely digital and use a Mini DisplayPort to HDMI adapter to skip the analog conversion? It also supports passing audio over HDMI.
About Mini DisplayPort to HDMI adapters

HT3492 What do I need to do to use the iMac as a monitor from my HP laptop? I have my HP connected to the Mini DisplayPort to VGA adapter which is plugged into a Thunderbolt port.

What do I need to do to use the iMac as a monitor form my HP laptop? I have my laptop connected to the Mini DisplayPort to VGA adapter which is plugged into a Thunderbolt port.

vga may not be a compatible port
https://discussions.apple.com/thread/2246912?start=0&tstart=0
more hits
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Can the Mini DisplayPort to VGA Adapter for a 2011 Mac Mini be used with Windows 7?

This question concerns the Mini DisplayPort to VGA Adapter described at the below link:
http://store.apple.com/us/product/MB572Z/A
When running Windows 7 via Boot Camp on a 2011 Mac Mini, can the above adapter be used with a VGA monitor?

Thank you for the confirmation, Mr. Peck.

How long can the Mini DisplayPort to VGA Adapter last?

Hi,
I've been using Mini DisplayPort to VGA Adapter (genuine) for a year now but not everyday. Yesterday I bought a new display that needs this adapter, so now is the time that it will be used everyday. I was wondering how long can it last (or operational hours) if it were to sit in the same place, not unplugged, with an average use of 4 hours a day?
Thanks
PS. This one: http://store.apple.com/us/product/MB572Z/B/mini-displayport-to-vga-adapter.

This is impossible to predict.
Sometime cables last a lifetime, sometimes they fail in short order.

Mini DisplayPort to DVI Adapter does not recognize SGI-Saver on DVI (LCD)

I bought a Mini DisplayPort to DVI Adapter for my new unibody 17" MacBookPro.
No dice! The lcd is not recognized, is not seen in the displays control panel, and LCD remains dark. This LCD works fine on the previous generation MacBook Pro when plugging into the DVI connector on that computer.
The Apple adapter seems not to recognize the DVI lcd panel. What's the fix? A firmware update perhaps?!?

The adapter works perfectly with a lower resolution Dell LCD panel. I'm hoping that Apple would have a firmware update to enable operation with the older generation LCD.

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.

Mini DisplayPort to VGA adapter not working under Vista (Boot Camp).

Hi there,
I'm facing a very serious issue with MacBook Pro Unibody running MS Vista under Boot Camp: using the Mini DisplayPort to VGA adapter to hook a projector is 95% impossible because the only resolution available is 640x480 or sometimes 800x600. No solution came from the adaptor firmware update, still same behavior: connecting the external projector/monitor toggles 640x480 resolution with no more choices available. Just 5% of attempts on selected projectors gave me access to the complete resolutions list.
This is having a serious impact on my job where I do need both Mac&Windows running natively and with external display capabilities, please I'm looking for some feedback from users facing the same problem or someone who had an official answer on this issue from Apple. Do avoid posting about using modded display drivers please: I know they exist but the adaptor should be working with original ones.
I can understand Apple does not support MS Vista issues but this seems to be a hardware/driver one.
I'd like to point out I'm using a clean Vista installation with Apple drivers (from the Leopard DVD) and I've run Vista (same version, same gfx drivers etc) under Boot Camp on my previous MPB (with integrated DVI output+adapter) on hundreds of different projectors with never a single problem.
Any feedback is really appreciated.
L.

I'm having the same problem. When I try to connect to the switch in our conference room (connecting both a flat panel display and/or a projector, both with much higher native resolutions), all I get is 640x480. This is a huge problem to using bootcamp, and I really need to get this to work. I was able to get a higher resolution 1280x800 on a separate, portable display, so I'm wondering if people have the problem with standalone projectors or only with projectors connected to some sort of switch, in my case an Extron MPX423A. I have also tried this in both Windows Vista (32-bit) and Windows 7 RC1 (32-bit), with the bootcamp drivers and the latest NVidia drivers, and the behavior is the same all around.

Apple Mini DisplayPort to VGA Adapter flickers

I have 2 Samsung SyncMaster 23 in, HD Displays connected to my Mac Mini. The Display connected via the Mini DP to VGA adapter flickers erratically. This started happening after installing the latest upgrade of OSX Mountain Lion. I called Apple support, they gave me a list of steps to try to fix the problem, which I followed to the letter, to no avail. The problem is annoying, to say the least. I tried to find out if there was a firmware update for the adapter, but I am running the latest firmware (1.03).
I would appreciate any help to solve this issue.

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.

Mac Mini, Mini DisplayPort to VGA Adapter, & Boot Camp with Windows 7?

Can a 2011 Mac Mini be connected to a VGA monitor using the Mini DisplayPort to VGA Adapter while running Windows 7 by means of Boot Camp? The Mini DisplayPort to VGA Adapter is described at the below URL:
http://store.apple.com/us/product/MB572Z/A

Sorry, I do not run Windows on my Mac's so I can not say for sure.
You should also ask over in the > Windows Software section of Apple Support Comunities.

Mini-DisplayPort to VGA adapter & other thunderbolt devices

I currently use the mini-DisplayPort to VGA adapter so that I can work on a large external vga monitor.
Will this work if the adapter terminates the chain or will I need to connect the adapter directly to the laptop thus preventing me from using any thunderbolt devices?

I was just thinking.. It is possible that belkin is support the miniDisplay in that port as well.
Yeah, that was my thinking as well...
The matrox dock is going to have DVI on it, but it doesn't support chaining (i.e. it only has 1 TB port)
Does your external monitor support DVI - let me go look at the Matrox - ugh - don't like it compared to the Belkin.
They're BOTH expensive and, as I don't believe that either is shipping, I'd have to wait on someone else to do the beta testing.
I've never tried a USB>DVI adapter - here are a few from my favorite adapter/cable company, though.
Good luck,
Clinton

Can i use the HDMI port and the Mini displayport to HDMI adapter simultaneously to switch between two displays?

I just bought a new Mac Mini and was hoping that i can connect my TV via the HDMI port and also connect a 19" monitor via the Minidispaly port to HDMI adapter or the Mini DisplayPort to VGA Adapter. This way i can pick between having the screen mirrored to my tv, or having the screen displayed at my desk.
Is this possible?

Yes. Note the resolution via HDM is limited to
This model simultaneously supports 1920x1200 on an HDMI or a DVI display (using the included HDMI-to-DVI adapter) and2560x1600 on a Thunderbolt or Mini DisplayPort display or even a VGA display (with an optional Mini DisplayPort-to-VGA adapter, which is compatible with the Thunderbolt port).
HD 4000 Mini Video

" help me please" I have Windows 7 installed on my mac pro and Bought Mini DisplayPort to VGA Adapter to connect to lcd tv But it does not work? why? please help me

" help me please" I have Windows 7 32 bit installed on my mac pro and Bought Mini DisplayPort to VGA Adapter to connect to lcd tv But it does not work? why? please help me
I have to boot with a Windows
When I use the Mac operating system not have a problem and DisplayPort to VGA Adapter Working properly
why does not work with windows ?
What should I do؟
I'm grateful to give advice
tanks
[email protected]

Someone in another section answered this. Thanks.

Mini DisplayPort to VGA adapter not waking monitor

Hi,
I've had my Mac mini for about a month now (the 2010 model with 2.4GHz Core 2 Duo and 2GB of RAM). Initially I had it connected to a 32" TV via HDMI which worked perfectly. However I have now switched to a 24" Iiyama ProLite E2410HDSD which doesn't have a HDMI socket. I've bought a Mini DisplayPort to VGA adapter.
Whenever I put the mini to sleep or switch it off, the display does not come back on. To get it to work, I have to unplug the adapter from the mini and plug it back in again. Is there any way to get it to work all of the time?
Thanks,
Thomas
Edit : Just booted into Windows 7 using Boot Camp, and putting that to sleep and waking it works perfectly!
Message was edited by: thomasw234

I think I know what's wrong, but I don't know of a good way to fix it. The Iiyama is not constructed correctly. It appears that it's DDC channel goes down when it's sleeping, which it shouldn't do, unless it allows auxiliary power on the VGA cable to keep the channel active, which it also seems like it isn't doing.
Does the Iiyama have a DVI input? That might work better with the correct adapter. Although if they messed up the architecture of the VGA port, they may have messed up DVI, too.
null

Does Mini DisplayPort to VGA adapter support DDC/CI?

I have a Mac Pro and a MacBook5,1.
Mac Pro is attached to a BenQ monitor which supports DDC/CI communication.
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).
If I attach the same monitor to my MacBook5,1 with VGA cable through a Mini DisplayPort to VGA adapter, DDC/CI stops working.
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.
The Apple mini-DisplayPort to VGA adapter contains a digital-to-analog converter.
So, you'll have to choose. If you want VGA, get Apple's mini-DisplayPort to VGA adapter.

The Mini DisplayPort to VGA Adapter does not detect my external monitor.

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