2nd Monitor Connected Via DVI to VGA Adapter is Blurry

I have a G4 dual 1.42 GHz (the last G4 model) and have an Apple 20" Cinema Display connected to the ADC port and a 21" CRT monitor connected to the DVI port via the DVI to VGA adapter supplied with the G4.
The CRT monitor display is blurry. I have tweaked display settings in System Preferences and the monitor's controls and nothing helps. I used this monitor in a dual monitor setup on a Power Mac 9600/300 and it was razor sharp, so I know that the monitor is okay. I could pull a display card from the old Power Mac 9600 since it's not being used anymore, but I hate to add another card to the G4 because of the heat problems. Any suggestions? Thanks.

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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TV & monitor connected via DVI to VGA & DVI cable. Wont display

I have my TV & monitor connected to my mini via DVI(input) to> VGA(output) & DVI(output) splitter cable. I cant get both tv and monitor to work at the same time only one or the other. How can I get this to work?
Note: I dont want a continuous display, I just want one to show the same as the other. If there both plugged in why dont they both work?

The answer to your question would require having a block diagram of the mini's graphics sub-system. If the DAC (digital-to-analog converter) behind the VGA port is just driven from the same output as the TMDS transmitter behind the DVI port, then I agree it would be possible that both could output the same screen simultaneously. But if the VGA and DVI ports are treated as seperate channels all the way back to video memory, then likely one would be prioritized over the other, only one could be active, and they would not be able to output simultaneously.
Another potential problem is that TVs and computer monitors generally want to run at very different formats and they require different signal types to be happy. A TV will want an interlaced output whereas a computer monitor will not. And a TV will want a very low resolution, like 640 x 480, whereas a computer monitor will be happiest at a much higer resolution.
I hope for you that someone else has this working and chimes in with some practical advice. I try to avoid making posts where I have no practical advice to offer and only bad news, but in this case I thought you might want to know about some potential barriers to success. Good luck.

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?

DVI to VGA adapter, monitor says "input not supported"

I have just received my MBP yesterday and, when I attempted to attach it via DVI to VGA adapter to my Acer AL2016W flat panel LCD, the monitor told me "input not supported". I was under the impression VGA is VGA is VGA. Perhaps I am mistaken. There is no DVI port on this monitor so I am, essentially, screwed ATM unless I purchase yet another monitor - this one is less than a year old. I require my MBP to be attached to an external monitor due to a disability, and am not sure what to do. I don't believe it to be an isolated issue, especially after viewing some of the other posts about the graphics card being an issue as well. I wish Apple would come forward with a resolution. I realize this issue has probably been posted somewhere already, however I am unable to sift through all the posts due to the aforementioned disability and inability to attach to external monitor. I just can't sit here for that long, so I offer my apologies.

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...

X240 (Win 8.1) w/ Ultra Dock and two external monitors connected via DisplayPort problem

I'm having trouble making this combination work. This Ultra Dock does have two DP connectors, computer sees both external monitors (HP ZR24w) but I cannot get any picture on both at the same time using DP. Sometimes one display does work, but that is not always working.
When I connect same monitors via VGA/DSUB and DP (with Lenovo DPtoDVI converter) I can get this to work - both same time - , but I'd prefer them both digital and both native DP as both monitors do have that port.
Ultra Dock does already have the latest firmware and this problem seems to not relate to the flickering problem with T440 etc. X240 is also running latest UEFI/BIOS and I've also tried latest Intel Beta display driver, no effect.

shelmers wrote:
W520 with Win 7 Pro
Minidock Plus Series 3
Two Asus monitors attached via DVI
Let me start by saying that the internal and both external monitors work simultaneously. However, getting to that state is the problem.
I can boot successfully with the laptop in the dock with 1) just the internal monitor, or 2) the internal and one external monitor connected.
However, if I try to boot with both monitors connected via DVI, the following happens:
Windows logon screen appears -- but there is no cursor on the screen
I enter the password and the login continues for 30-60 seconds, then
Blue screen SYSTEM_SERVICE_EXCEPTION for nvlddmkm.sys with STOP x0000003B
Lenovo has replaced the dock with no change in behavior.
Drivers and BIOS are current.
Most recent change was to set BIOS so Win 7 automatically detects Nvidia Optimus.
At this point, my best workaround is to disconnect one external monitor whenever I need to reboot, and then connect it again after everything is runing. Not terrible... but it really shouldn't be necessary. Any suggestions?
If you want to drive the monitors in the manner stated, the BIOS Display property must be set to Discrete and the auto detection below it must be disabled.

Lost the monitor after connecting via DVI

I've had an X2Gen 22" monitor connected to our G5 via DVI/VGA adapter to the VGA input on the monitor for a couple of years. Another monitor I just bought came with a DVI cord and a VGA cord. I decided to try the X2Gen/G5 connection via DVI since I now have a cable. The computer can't/won't recognize the monitor now that they're DVI connected. And screen images are ugly! I can't even calibrate it because the computer tells me it cannot identify the monitor. Any ideas anyone? (Other than going back to the VGA cable?)
Thanks,
Jon

Just a thought, but try zapping the PRAM. Good luck.

I have a MBPro mid 2013 with 1 Thunderbolt port. Just bought a Mac monitor and want to daisy chain a PC monitor to it. Use a Mini DVI to VGA adapter from MBP to PC monitor. How do I daisy chain the 2 monitors?

I have a MBPro mid 2013 with 1 Thunderbolt port. Just bought a Mac monitor and want to daisy chain a PC monitor to it. Use a Mini DVI to VGA adapter from MBP to PC monitor. How do I daisy chain the 2 monitors?

Hall Palm Desert,
if your Mac monitor has Thunderbolt ports, and the PC monitor is on the end of the daisy chain, then you might be able to do it by connecting your PC monitor’s VGA cable to a Mini DisplayPort-to-VGA adapter (e.g. Apple, NewerTech), connecting that cable’s Mini DisplayPort end to one of the Mac monitor’s Thunderbolt ports, and then connecting a Thunderbolt cable between the other port on the Mac monitor and your MacBook Pro.

DVI-to-VGA adapter disabled on HDMI-equipped monitors?

Can anyone with an Apple DVI-to-VGA adapter on a Core Duo or Core 2 Duo (both at 10.6.8, currently and probably forever) still connect to a second monitor if the monitor also has an HDMI port? I could until early 2011. From 2008 to 2010 I could connect to every VGA monitor through the DVI adapter.
I thought the DVI-out on my MBP died but got a newer MBP and it, too, doesn't work on any HDMI-equipped screens. Both computers and all my DVI-to-VGA adapters work fine on monitors without HDMI. Yes, I rebooted. No, it's not the cables. Again, all components otherwise work in other arrangements. I am not talking about any other setups. The HDMI-equipped monitors all work fine with miniDisplayPort-to-VGA plugs (today!) from newer Macs.
Any work-arounds? Anyone have a best-recommendation on an adapter that works still?

Thanks, BSteely, I have the latest QT and iTunes already. Closing the lid seems to kick the MacBook external display into some special mode that Front Row can't display videos in. For example, you get the Front Row interface, but as you select movies/TV shows, the preview window on the left side is blank. Open the cover, and have both displays going, and you can see the previews fine (and of course, you can see the movies/TV shows play fine as well when you click on them)
Running Quicktime Player full screen works fine without Front Row in either open or closed lid mode. So it is apparently something wrong with Front Row itself.

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)...
Already changed the Hz-Rate between 59.9, 60 and 75 Hertz and the Resolution also... but nothing happens.
In extended Desktop mode i can even slide the cursor into the area where the display is supposed to be...
Hope u can help me
thx

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.
-Brian

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)

I am considering a Apple iMac but would be interested in adding a second monitor. Does it have to be an Apple monitor or can i add any monitor with a thunderbolt cable and DVI or vGA adapter?

I am considering a Apple iMac but would be interested in adding a second monitor. Does it have to be an Apple monitor or can i add any monitor with a thunderbolt cable and DVI or vGA adapter?

I found that the Thunderbolt input accepts the mini-DVI (in my case converter to VGA for a tutorial use monitor)
BUT, you have to really oush it in 'til it clicks. I thought it too loose until I tried it. works just fine!!
i get a solved for my own LOL
Ed

Mini DVI to VGA Adapter Video Problem

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.
Troubleshooting the problem we have swapped IMac Intel computers with no luck, but we still have to use the Apple Mini-DVI to VGA Adapter. When we hook the projector to a Intel Mac Book Pro, we have to use a different adapter, but then it works perfectly. In fact, everything we try using other adapters works fine, it’s just when we use the Apple Mini-DVI to VGA Adapter that we experience the video problem.
Has anyone experienced this problem and if so, have you been able to remedy it?
iMac (Intel Core Duo) Mac OS X (10.4.8)

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.

Mini DVI to VGA Adapter Issues

Hey guys,
My first ever post to the forums. I just recently bought my very first apple computer. It is a 2.4 ghz Macbook 13" and bought a Mini DVI to VGA Adapter so that I can connect it to my 46" Sharp AQUOS TV. I connect my laptop with the dvi to vga adapter plus another vga cable of course and all I get on the screen is my wallpaper but I can't see any of the icons on my tv screen, nothing.
Can anyone help me on this? Does this sound like a familiar problem?
I would appreciate your help.
Thanks in advance,
Dogan

Hi DoDolom,
First, welcome to Macintosh!
Secondly, it sounds to me like what's happened is that OS X has extended your desktop onto a second monitor. Plug in an external mouse and keyboard and then close the MacBook's lid. It will go to sleep. Use the external mouse/keyboard to wake it up and you should be running on just the external display.

Apple Mini-DVI to VGA Adapter Problems in Boot Camp / Windows

I currently run Windows XP SP2 on my MacBook and recently purchased the Mini-DVI to VGA adapter so I could hook up the MacBook to an external projector, monitor, or TV to display what's on my Windows screen on the external device. However, when I connect it to any external device, it just goes nuts and sporadically continues to make the hardware connect and hardware disconnect sounds and doesn't allow for external output of the screen. Any suggestions...? Thanks!
Marc

I think I solved this problem.
It was in issue for me. My second monitor would only display the Windows XP screen when it was loading, then it would black out. I couldn't even move my mouse arrow to the other side. Then I fixed it, here's how (running Windows XP SP3):
1. Start > Control Panel > Appearance and Themes
2. Display
3. Go to tab "settings"
4. Double click the blue image with the "2" inside it. This is the second monitor, adjacent to your first, or primary, monitor. The blue box may be a desaturated, greyish blue, meaning that the monitor is disabled. Click it and it a box will pop up asking if you want to enable the monitor. Click OK, and then like magic, your monitor is resurected in it's Windows Glory! From there, adjust the resolution, and it should work perfectly.
This isn't a Boot Camp compatability issue, it's just a problem with the lack of familiarity that users of OS X have with using XP.
Have a nice day!
Message was edited by: BlakeTron
Message was edited by: BlakeTron

Dvi to vga adapter?

I want to connect a 20" VGA monitor to my Powermac dual 2.7. I looked in the Apple store and here's what they had:
"The Apple DVI to VGA display adapter was specially designed to allow users to connect their DVI equipped PowerBook G4 or Power Mac G4 to an external VGA monitor or projector for 24-bit video-mirroring or dual display.. The DVI to VGA adapter plugs into the DVI port built into the new PowerBook G4 or into Power Mac G4s with NVIDIA or ATI Radeon graphic cards which feature DVI ports"
Does Apple make an adapter for a G5 Powermac, if not, any suggestions on which one and where to get one?
Thanks, Pete

Yeah, I think you're working too hard.
That one should be fine. I think you can only use one of them, as they're too wide to use one on each of the video card's ports. That's how it is on mine. Only an issue of course if you decide to use two VGA monitors.

2nd Monitor Connected Via DVI to VGA Adapter is Blurry

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