HT3492 mini displayport to vga adapter not working under windows 7

i've read the article above. How can this firmware affect operation under Windows 7 OS? I have a dual boot system and tested several mini dp-vga adapter, all of them seem to either stop working after a while or doesnt work at all. i have a macbook pro 13"(early 2011) and a macmini i5 4gb

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.

Similar Messages

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.

Mini DisplayPort auf VGA Adapter not working

Hi,
While in Germany I bought a 'Mini DisplayPort auf VGA Adapter' in order to be able to do presentations on a Beamer. This worked fine for a couple of weeks but now has stopped working.
I reinstalled the operating system to be sure that no drivers are missing but still would not work. I borrowed the same adaptor from a friend and his works fine.
How can I have it exchanged please? On top of that I am not sure I can still find the receipt because as it was working fine for the first few weeks I assumed it will remain fine and probably threw this away.
Any help is appreciated!

Thanks CellarDwellr.
I live in Vienna and things are always different here.
We do not have any Apple Store but a company that represents Apple called McShark.
I went to them with the adaptor and they said they needed my MacAir serial number in order to send it in. Never heard that in order to replace a faulty cable one needs also the serial number of the machine, did you?! ...
So I go home again and get the serial numbers of both my iMac and my MacAir.
After waiting on them for over half an hour they say they may still not be able to send it in because I do not have the receipt of the purchase. I asked why they could not have told me this earlier on instead of wasting half my day ... The assistant said, yes they could have, but didn't even apolgoize!
Anyway she needs to verify with her colleague and call me on Monday to tell me if they can send it to Apple or not.
Unbelievable bad service and even worse attitude. If anyone from Apple company reads this my suggestion is to revise their association with this company as it ruins the good brand they have.

Mini DisplayPort to VGA adapter not working

Hello all!
I purchased a new adapter today off amazon. When I plug it in (with or without VGA cable attached) the screen goes blue for a few moments and comes back to my OS Screen, however, none of my external displays are recognized! My projecter, HDTV, 4:3 monitor, and my Dell 16:10 monitor are all undetected. I tried installing the infamous update and it did not want to (said could not detect adapter). I'm assuming it's rather new seeing how it said thunderbolt on the box, but the box came all ripped open.
Other than returning the product, is there any way to try to get this thing working?

Yeah i tried it with another 19" monitor which had the same outcome, there was a signal but no image.
If it's not working with two different monitors, that's a pretty sure sign the adapter is bad.

Mini-Displayport to DVI adapter not working, but Mini-Displayport to VGA and Thunderbolt work fine

Mini-Displayport to DVI adapter not working, but Mini-Displayport to VGA and Thunderbolt work fine.
This is a brand new MacBook Pro (15-inch, mid-2012) just received. I suspect that this is a hardware problem as:
The mini-displayport to DVI adapter and the external monitor that I am utilizing connect and operate just fine using my older MacBook Pro (mid-2010) with the same OS.
The new MacBook Pro powers the external monitor with a mini-displayport to VGA adapater without issue.
The new MacBook Pro powers an Apple Thunderbolt display without issue.
Both MacBook Pro's are running OSX Lion 10.7.4.
The only combination which does not work is the mini-displayport to DVI adapater used in conjunction with the brand new MacBook Pro (mid-2012).
All adapters and components (mini-displayport adapters) are Apple retail adapter.
I have tried several external monitors, including my Dell U2412m.
When I connect the mini-displayport to DVI adapater to the new MacBook Pro (mid-2012), nothing happens. The external monitor reports "no signal" and attempts to go into sleep mode. Using the "Detect displays" button has no effect, even when used multiple times. Rebooting does not help, nor does resetting the SMC or PRAM.
Any other suggestions before I take it to the Genius Bar?

I turns out that the logic board of my MacBook Pro was faulty (despite being brand new).
I took it to the Apple Store, presented the problem, and one of the Tech's came to the same conclusion that I had -- hardware failure. Phone support was no help in the matter (and even told me that what I was trying to do wasn't a supported option, which is rediculous). However, the Genius Bar did take care of the problem, and my MacBook Pro was back to me with a replaced logic board within a few days.
Hope that htis helps.

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

Mini DisplayPort to VGA Adapter NOT DISPLAYING ON EXTERNAL SCREEN

Hello!
Mid 2012 MacBook Pro
Processor 2.9 GHz Intel Core i7
Memory 8 GB 1600 MHz DDR3
Graphics Intel HD Graphics 4000
Software OS X 10.9.3 (13D65)
I have a mid 2012 MacBook Pro, I have connected a Mini DisplayPort to VGA Adapter in order to watch movies on a HP w19e LCD display.
Ive been using this adapter for a year now and I have never had any problems with it, until now...whenever I connect it to my mac's display turns black, and nothing happens, so I wait and the LCD display shows the unfurtunate NO SIGNAL message, so I wait a little longer and still nothing happens, I unplug the Mini DisplayPort and plug it back in, and nothing happens, and when I say nothing happens I mean nothing happens, my mac's display is black as if it was in sleep mode, I get no signal on the HP LCD and I can't get my computer's display to show image again, the only way to do it is to force restart it.
I looked up the problem and I found a forum with a possible solution for it and did as it said.
1) Restart the computer in Safe Mode with display attached (shut down and restart while holding down shift key).
The display showed up without distortion.
2) Change the display to my desired preferences (dimensions and refresh rate).
3) Restart computer. ...and it works like a charm.
I followed the directions and it worked... but after I restar to go back to um.. normal mode, the problem is back.
Please I need my LCD screen how can I fix this.
I hope I didn't confuse anyone, sorry for my english
THANK YOU
I leave the link for the Apple Forum
https://discussions.apple.com/message/18816392#18816392

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.

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 DVI to VGA adapter not working

Hello -
I just purchased a new Mini DVI to VGA adapter to use with my Mac Book. The day I bought it I plugged it in and worked great! Now after disconnecting it and reconnecting back to my Mac Book things are not so good. When I hook everything up to each other the monitor shows "no signal". Using Systems Preferences/Detect Display does not help at all. Am I missing something obvious here? I'm a new Mac junkie.

Here is an Apple article on the subject of having no video on an external monitor. It's written about the Mac mini, but it applies equally to any other Mac.
http://docs.info.apple.com/article.html?artnum=301345
And here is another Apple article that is more generalized and with fewer suggestions, though it might be a good place to start from. Good luck.
http://support.apple.com/kb/HT1573

Mini DisplayPort to HDMI Adapter Not Working

I just got a mini displayport to hdmi adapter that I ordered from dealextreme and it does not work. The adapter had very good reviews and not one review said it didnt work. When I plug in the adapter (with or without a hdmi cable attatched to it) to my macbook, the screen blinks and then goes back to normal. When everything is properly connected the tv shows no input signal (I am on the correct input channel) and the screen doesnt appear in the displayas settings in my macbook pro. I tried to reboot the macbook, shut down and turn on the screen and nothing seemed to work. The detect display option in the system preferences didnt help. I appreciate any help I can get.
-Yonatan

I just got a mini displayport to hdmi adapter that I ordered from dealextreme and it does not work. The adapter had very good reviews and not one review said it didnt work. When I plug in the adapter (with or without a hdmi cable attatched to it) to my macbook, the screen blinks and then goes back to normal. When everything is properly connected the tv shows no input signal (I am on the correct input channel) and the screen doesnt appear in the displayas settings in my macbook pro. I tried to reboot the macbook, shut down and turn on the screen and nothing seemed to work. The detect display option in the system preferences didnt help. I appreciate any help I can get.
-Yonatan

VGA Adapter Not Working in Windows 7 (64 bit)

I was running Win7 (64 bit) through bootcamp and could not get the VGA adapter to work. I've tested it and it worked fine while under OS X. In Windows 7, it could detect the secondary display, but my monitor no has signal. I was re-install windows, but no work anytime. Anyone else encountered this issue and have a fix?
I have a early 2011 13" Macbook pro - 2.3 GHz/4GB RAM

But I have it worked fine a week ago! I think that stopped working after firmware update...

Mini displayport to dvi adapter not working

hello,
I have both a 2008 Mac Pro tower with 2 Apple Cinema Displays, and a newer MacBook Pro that I'd like to hook up to one of the monitors.
The 2 monitors are both DVI, so I bought a mini displayport adapter to plug into the thunderbold port on the MacBook Pro and the other end to the monitor.
When I plug it all in, I get no video on the monitor. I am sure the monitor works, I'm sure the cables work (from the monitor), not sure about the adapter (I just bought it, so it could be bad)....
I did see quite a bit of the same issue online, thought I couldn't find any help in fixing it.... short of driving back to the apple store and replacing the adapter, I'm wondering if there's anything else I should do to trouble shoot this....
I've restarted the computer, checked all connections, nada....
help??

The problem was simple: my laptop wasn't plugged in...
The desk where the Mac Pro is isn't where I typically use my laptop, so I carried the laptop over and plugged the monitor in, when that didn't work I looked online and checked here- I also returend the original adapter to the apple store. I inquired about it there, and the genius asked if my laptop was plugged in when I tried it out... sooo when I got home I tried it again with the new adapter and with the laptop plugged in, and it worked right off the bat with no trouble shooting or "detect display" necessary...
The laptop must be plugged in for the external monitor to show up...
now I know.

Mini DisplayPort to VGA adapter difficulties

About 3 months ago my mini DisplayPort to VGA Adapter quit working. It was off-brand. Recently bought an Apple replacement and it is also not working. What is wrong?
When I plug it into the laptop, the screen flickers as it used to, as it prepares to interface with a different display type. Then nothing happens and there is no apparent connection with the projector or TV.
Help!

Perhaps the fault is the cable.
Ciao.

" 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.

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.

HT3492 mini displayport to vga adapter not working under windows 7

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