No signal via DVI to VGA adapter on my video projector Sharp PGM 15X

Hi there!
I have a big problem with my video projector. It´s connected via mini DVI to VGA adapter to
the projector. The problem is, Mac OSX decect the projector but there is no picture.
To resize the solution on both, or one of them doesn´t help.
When I use my Bootcamp and reboot with Windows XP there is a picture on the video projector.
I cant believe this.
What should I do to fix this problem?

I got my Mac Mini yesterday and I am having the exact same problem as you are having.
I've tried on two different TV's but it is just not sending a signal. Is it faulty?

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I'm wondering, is it to be expected that the monitor connected to the DVI port via the DVI to VGA adapter won't look anywhere near as good as if it were connected to a separate graphics card? Thanks.

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First off, are you connecting in the proper sequence? That is:
1. MBP and monitor powered on
2. connect monitor's VGA cable to the DVI-to-VGA adapter
3. connect DVI-to-VGA adapter to the MBP's DVI port
In that way, the MBP should autodetect the monitor and set the resolution appropriately. Else, the output resolution of the MBP may not suit the monitor, and the monitor will give a "not supported" error.
As a side note, have you considered the options in System Preferences > Universal Access? Options include Zoom, VoiceOver (spoken screen selections), making the cursor larger, and other enhancements for the visually impaired.
Hope this helps...

No video signal using mini dvi to vga adapter.

I just bought a macmini,the last generation. Separately I bought on the apple store a mini dvi to vga adapter because when I bought the macmini I forgot to buy that....once the adapter arrived I tried to turno on the mini,everything seems to be normal,the mini works,the audio signal is normal and after the startup it asks me to choose the language,but the screen says there's no INPUT SIGNAL. I tried another mini dvi to vga adapter,the vga wire works with my pc so I didn't try another one,I tried the reset of the mini,nothing....do I have to try with "miniport to vga" adapter or is there something else I can try?

I got my Mac Mini yesterday and I am having the exact same problem as you are having.
I've tried on two different TV's but it is just not sending a signal. Is it faulty?

Using external Display via Mini-DVI to VGA Adapter does'nt work

Hey Guys,
i recently bought a mini-dvi-to-vga adapter.
When I plug it into my macbook and connect it to my 19" external TFT, the MB recognizes the TFT as [Medion] MD30219PH but the display stays blank (no matter if i choose mirroring mode or extended desktop)...
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From what I've been told, using the computer's video output isn't outputting a true NTSC picture. I was told when talking about how the Macbook Pros dropped the S-vdieo port that I shouldn't use that anyways, but rather to go the firewire route. THat was actually converts the video source to true NTSC instead of taking a computer output to a TV. While I have no doubt that it works, I'm willing to bet that you'll see a noticeable difference between the G5 S-video and your MB using firewire. Most consumer camcorders from the past several years do digital (firewire) to analogue (NTSC) conversion, so you probably don't even need a new box.
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Howdy.
Working on a way to plug our new mini (early 09) into a crusty ol' analogue tv, whose best quality input is up to 576p component. Tv manual say to plug component source (either YPbPr, YCbCr or Y B-Y R-Y) into the component input on the tv (Y Pb Pr).
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A few comments; first off, you can't damage a TV with wrong signal types, although some old TVs can be damaged from wrong timings. That's going to depend a lot on the TV's age whether it has a more modern, multi-sync type chassis or not.
The Mini DVI output on the new mini is DVI-I. That is how it is able to support the Mini DVI to VGA Adapter that Apple sells for the new mini. But you are right it no longer supports the Mini DVI to Video Adapter. But that is an issue with drivers and has nothing to do with the mini having a DVI-I output or not. But it is definitely Mini DVI-I.
So to connect a component converter box, you could use either the Mini DisplayPort or the Mini DVI output of the mini. I would tend to recommend the Mini DVI as being somewhat more standard. However, a Mac really wants to see something called a plug-and-display driver, which is also known as EDID, whenever it is connected to a display. So try and see if you can find a component video converter having a VGA input that has an EDID loaded into it or else the Mac will not be happy and it could all be money down the drain that would have better been spent on a new TV.
Hopefully you will get some more specific information from someone else. Good luck.

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Depends on how long the cable is, and if it was of sufficient quality for computer use. The higher resolutions require better quality and shorter cables. You may get some signal loss for long cables. A standard monitor cable that comes with a computer monitor should be fine, but what kind of length extension cable are you talking about?

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This year at Randolph-Macon College we replaced the Math lab Emac computers with IMac G5 Intel machines. The laboratory has an NEC model MT1050 projector with a manufacturer’s date of August 2002. We can not seem to get rid of ever present scan lines. We can slow them down and speed them up by adjusting resolution and refresh rates, but nothing will remove them. We are connecting the IMac to the projector via the Apple Mini-DVI to VGA Adapter. It is specifically designed for use with the iMac (Intel Core Duo), and the adapter connects to the Mini-DVI port of the computer and the VGA end of the adapter to an external VGA monitor or projector.
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I don't have much to suggest, except to ask if you can try with a different mini-DVI to VGA adapter. (i.e. do you have more than one on hand to make sure yours isn't just defective?) Make sure it is firmly seated into the iMac.
I use the same adapter to provide an extended desktop on an old CRT monitor and the display is great.

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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 DVI to VGA adapter doesn't seem to work

Hi everyone
I am trying to link my Powerbook to my TV using the mini DVI to VGA adapter. I have made the connection and the Mac seems to be detecting the TV display, but the desktop is not appearing on the TV screen. Is there something I need to do with screen resolution settings, for example? The manual sems to suggest that you just plug in the adapter and away you go...
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If it is showing the Galaxy image the signal is getting there. you have it set to Extended desktop. Go into the Dispplay section in System Preferences and chnge it to Mirror display, Check Box near the bottom of that window.

How to connect Macbook to TV through Dvi to VGA adapter.

I recently got s Macbook and was wondering how to connect it to my 32 inch sony tv. I have the dvi to vga adapter and recently bought an adapter that converts the VGA into RGA adapters + S video (all of which my tv has) When I connect the TV with these components nothing happens. I am curious to know what the next steps are to getting the Macbook to recognize the tv and how to produce an image on my TV. Any input would be helpful

what plugs do you really have.. that was confusing? This is a Macbook (not pro)?
First, it could be as simple as going to System Preferences|Displays| and choose to "Detect Display". It may not be recognizing you plugged something in.
If you want to connect you should probably get the proper Apple mini-dvi adapters to match exactly what your TV has. I use the adapter from mini-DVI-to-DVI with my DVI-ready TV and it works great. They have one adapter for mini-DVI-to-VGA, and one from mini-DVI-to-Svideo. Note that multiple adapters assume you have 100% compatible input when often adapters "cheat" on the actual output side... data and signals are probably not getting thru... your Mac can't recognize the TV as connected.
If you want to live dangerously, you might try using the mini-to-DVI adapter with a DVI-HDMI cable (single cable, no adapter) and see if that works (HDMI is a legit DVI spec so it should work, it works in reverse for my DVD player to TV connection)

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DVI to VGA adapter not working with my G5 Dual 2.3 GHz Power PC. I am trying to use a VGA Monitor but can not get a signal. I also am using a Dell with a DVI Input and that works fine using a DVI Cable from my G5 to the Dell u2410.

Bad adapter?
The G5 ports are DVI-I. Any good DVI-I to VGA adapter should be fine.

G4 fw800 dvi to VGA adapter

Hi
I've just passed my G4 fw800 to a friend but I can't find the DVI to VGA adapter.
Can anyone remind me which version of DVI I need. DVI-I or DVI-D? The graphics/video card is the original card that came with the G4.
Any help would be gratefully received.

A standard DVI port has all the required VGA signals present.
They use the larger minus sign at one end of the connector, along with the four pins around it, plus Vertical Sync (which is also used by the Digital Signal) to create the five signals needed for VGA. No conversion is performed, and there are no active components in the adapter.
The earliest G4s (not yours) shipped with a DVD-D (Digital-only) port, which often was visually distinctive in that it lacked the minus-shaped pin and the four pins around it. That one cannot be used for VGA because the signals were not provided at the DVI connector.

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Hallo, ich have yesterday bought a DVI to VGA Adapter. I connect my Macbookpro 15 to my PC Monitor a NOKIA 446Xpro Multigraph.
Everything looks fine, but when everytime my Mac goes to sleep mode and back to activ again it said no Signal and my Mac Freeze. Everything just don´t move.. Everytime this happen i have to test the Harddisc and repair it.
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There is a very long thread on this topic here:
http://discussions.apple.com/thread.jspa?threadID=1058380&tstart=90
The topic has mostly become quiet since 10.5.1 because that seems to have fixed most people's issue. But I see you are already running 10.5.1 so that is not helping in your case apparently. You might try reading the above thread backwards from the most recent posts to see if you get any other ideas for a fix. Good luck.

Apple Mini DVI to VGA Adapter

I purchased a Apple Mini DVI to VGA Adapter for my MacBook (early 2008).
When I plug the cable into my MacBook it works fine, I have to drag the browser from my macBook onto my LCD using the curser. But when I do this with iTunes and I want to watch a film or music video there is no sound. Does anyone have any ideas of how to solve this problem or if im using it right.
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Ah. Okay. Well you need to output the sound from your MacBook to your TV. You need another cable to carry the audio. You can use an 1/8 mini audio to TOSLINK (if your TV supports optical audio input) or 1/8" to RCA audio (those red/white cables).

No signal via DVI to VGA adapter on my video projector Sharp PGM 15X

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