Mini Displayport to VGA problem - not recognizing

Hi all,
First, thanks for your patience as I am new to these forums and thanks for reading and hopefully helping.
We purchased an apple branded mini DP to VGA adapter about a week ago from an auth. reseller in Prague (US expats). We are using the adapter to watch video from our MacBook Pro on an Epson projector. Everything worked great for about a week and all of a sudden (truly, no software changes, updates, dropped adapters, etc. etc. etc.) it stopped working. By "it" I think I mean the mini DP adapter or the plug itself. The reason I think this is b/c the computer doesn't even recognize when the adapter is plugged in; previously, when plugging ONLY the adapter into the mini DP plug, the screen would flash blue, now - nothing.
I have reset PRAM and the SMC and still no change. I checked when I first purchased the adapter and found that the firmware was indeed up to date.
Any ideas? Hoping for insight before having to deal with the extraordinary language barrier.
Thanks again.

Hello
I have this Problem too, my monitor best resolution is 1680 X 1050 but I can not set it, i have only 1600*1200 or 1440*1050, what can I to do?
but i don't have this problem with my MacBook Pro 10.6.4, I have best resolution 1680*1050
Emad Falsafi
Message was edited by: Emad Falsafi

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 to VGA problem

Hi, all!
My New MacBook can't work with external display with resolution more then 1360x768 using Mini DisplayPort to VGA connector.
Then I'm setting bigger resolution (for ex. 1920x1080) display shows me picture for a 2-3 seconds, then switches off, and on again.
Tested 3 monitors and one tv.
Any suggestions?

Hello
I have this Problem too, my monitor best resolution is 1680 X 1050 but I can not set it, i have only 1600*1200 or 1440*1050, what can I to do?
but i don't have this problem with my MacBook Pro 10.6.4, I have best resolution 1680*1050
Emad Falsafi
Message was edited by: Emad Falsafi

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.

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 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 Adaptor not Mirroring

13-inch MacBook Pro (Mid 2012) running 10.8.3
Monoprice Mini DisplayPort to VGA Adaptors freeze the system (no issues with Monoprice Mini DisplayPort to DVI connected to monitor) so I tried an Apple Mini DisplayPort to VGA Adaptor and that works ok, EXCEPT it doesnt automatically mirror to projectors like older models I have used.
Is the 13-inch MacBook Pro (Mid 2012) supposed to auto mirror when connected to projectors using Mini DisplayPort to VGA Adaptor?
Thanks for any assistance.

I havent had a chance to test, yet it looks like if I create the settings for mirroring when the projector is attached to the laptop, the setting should stick moving forward.. I thought it just auto-sensed. Will try and report back here if there are any changes or to solve the ticket...

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.

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.

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 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 problems

I connected my Apple Pro to my HD TV to watch streamed movies on my computer using the TV as a monitor. I was advised to purchase a Mini DisplayPort to VGA Adapter and all the connections fit. The first time I connected it was no problem. I watched the movie and the audio was fine. Then the 2nd time I connected I had no screen. It was a blue wavy screen on the TV, even though the computer screen was showing the show. I believe it may have been showing me some sort of screensaver application from what i've read on the forums but I have no idea why or how. Then the next day I tried again. The screen was fine but the audio quality was terrible. It was like listening through a cheap radio. Why am I having so many problems and the quality is not consistent. Are there settings I should change when I do this?

I have some good news.
Regarding the broken lines on the output of the Mini DisplayPort, it seems as though it "fixed" itself. My theory is, I recently installed Windows 7. Updated all the drivers on the windows side and got it to project properly with the new Intel 4000 graphic cards. Once that happened, it kind of "popped the cherry" on the port and now both Mac and Windows output properly through the Mini DisplayPort.
I've tested it with numerous adapters and once it outputed properly for the first time ever, all subsequent times work.
I now have tested in on LCD and DLP projectors, Philips monitors, Skyworth TVs, Sanyo TVs.
It's working with the Mini DisplayPort - VGA adapter.
It's also working with the Mini DisplayPort - DVI adapter as well.
Before I "popped the cherry" on the output port, nothing else worked. 1440x900 didn't work, neither did mirroring the displays. It just had to work once with whatever OS and after that it outputs fine all the time.
If you ahve the same problem as above, i'd recommend dual booting another OS, load the proper graphix drivers, get it to output properly once and hopefully it'll fix the problem like it did for my unit.
Thanks for everyone's input with the whole ordeal!
PS. after the initial output, it didn't matter which adapter I used. I kept the generic since it's cheaper, returned the apple one cuz it's exactly the same, and now bought a generic MiniDP - DVI for my at home workstation.
PPS. One final picture of it working....

X1 connectivity problem with old VGA beam projector using mini displayport to VGA adaptor.

Hi all,
I would like to ask you how to connect this X1 with VGA projector as well.
actually, X1 has a external interface specification as mini displayport 1.1a.
So I bought mini displayport to VGA adapter from MAC store.
(Actually, Lenovo Korea office doesn’t sell this adapter directly on Korea, even in the future.)
and try to connect both of LED monitor and beam projector.
LED monitor was worked as well. but, this adaptor doesn't work with VGA projector. TT
Please help me how to work this adaptor with projector as well.
Solved!
Go to Solution.

Hi everybody. I was having the same issue here, but I bought a Mac minidisplayport to VGA adapter. It worked on my Monitor but it was not working on my clients VGA beam projectors. But today I figured out a way to make it work, and it is pretty easy; just change your laptop screen resolution.
When you connect the mini Dport to VGA adapter to the projector VGA receiver cable, just change your laptop screen resolution to 1024x768 (maximum) and the projector will receive the signal with no problem.
This is the best solution that I found, because is easy to find a Mac/Apple Mini display Port to VGA adapter.
Hope this works for you too.
Regards,
J.

" 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.

HT4617 Even though thunderbolt is not hot puggable in Bootcamp, is the use of mini displayport to vga/dvi still hot pluggable under Bootcamp?

Even though thunderbolt is not hot puggable in Bootcamp, is the use of mini displayport to vga/dvi still hot pluggable under Bootcamp?

This is Apple support on the subject
http://support.apple.com/kb/HT4617
Can I plug and unplug devices into a Thunderbolt peripheral that is already recognized?
Yes. That is the best way to add and remove devices from the Thunderbolt chain while Windows 7 is running.
Have you tried?

Mini Displayport to VGA problem - not recognizing

Similar Messages

Maybe you are looking for