DVI problems

Hi,
I have this DVI monitor which was able to work when using DVI interface
However i do not know what happen. I had a power failure in my home, and the computer was shut off. When the power was back, I turn on my computer, there was an error message that appeared on my PHILIPS monitor(170B4) "no video input". Using a Vga interface allowed me to use the monitor. I m using FX5200 128 tdr. SO my question is which one is spoilt? the graphic card or the LCD monitor?
OR is there a way to counter this problem

It either of the DVI-I connection that is being short due to the power failure I supposed... maybe another VGA with DVI-I connector can be placed in to test this out.

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MacBook mini-dvi problem

Suddenly my mini-dvi port on my MacBook C2D 2.0 GHz White (late 2006) stopped working properly.
When I connect an LCD monitor using mini-dvi to vga adapter there is no signal but when I connect the monitor using mini-dvi to dvi adapter everything works fine. As far as I understand there is something wrong with the analog signal in my MacBook's mini-dvi port because the problem is definitely not in the mini-dvi to vga adapter as I bought a new one and the problem did not disappear.
I would appreciate any help. Is there any way to fix the problem besides replacing the logic board?

By the way, what I also found out is that when I connect display to my MB it even detects the name of the monitor, which can be seen in the display preferences. For example at work I use BenQ FP72E and when I connect it to my MB through mini-dvi to vga I can see the exact name of this monitor in display preferences but still there is no signal on the external monitor.

Mini display port to DVI problems

Hello community,
I have a question regarding the connection from an iMac via the mini display port to a DVI input at a TFT monitor. I have an older TFT monitor and now I connected the iMac with this monitor via mini display port -> DVI adapter -> DVI cable -> monitor.
It is quite a simple connection, but actually when I force Mac OSX to detect external monitors it does not react at all. Mac OSX behaves as if there is no connection to an external monitor.
I already told this to my reseller and they told me that the adapter is not working correctly and they gave me another one. With that one I have exactly the same problem and now I'm quite sure, that it is not a problem of the adapter, but somehow my iMac does not find the external monitor.
Is there probably an underlying problem I do not understand yet?
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Is the adapter plugged in all the way in the Mini DisplayPort? It takes more force than you might expect.

MiniDisplayPort out to DVI problems

I bought a Mini DisplayPort to DVI cable from Monoprice, and it has some problems. I'm connecting it to a Gateway 1920x1200 monitor. If the resolution of that monitor is set to anything lower than 1280x960, everything works fine. If I go above that, weird things start to happen. Random pixels across the screen start to flicker to white, making the screen appear to be sparkling. Sometimes, depending what I have on the screen, black lines will appear on the screen. If I try to run full-screen video, the screen just turns black. I think the cable is not transmitting data fast enough. Is this a problem with the computer, or will another cable work better?

The native resolution of your 15" MBP is 1440x900. If you are connecting the external display and running in *mirror mode,* you are limited to that maximum. If you switch to *extended desktop mode* you can set the resolution for the external display up to 1920x1200 and possibly higher depending on the monitor (the setting is done in System Preferences > Displays).
It sounds like you are running in mirror mode and your external display itself is set for some higher resolution than the MBP can support in mirror mode.
In my case, I am using the Apple miniDisplayPort-DVI adapter and a monoprice DVI-HDMI cable to connect to my 40" Sony Bravia and it works perfectly.

DVI problem with MacBook pro

I bought a new DVI to HDMI cord for my Mac, which is the older mac before changing all the outputs and keyboard and all. It is probably about 3 years old. My problem is the TV is picking up the signal from the computer, but it will only display the background I have on my computer, not what I am working on like the internet or playing a moive. Any suggestions on what I can do to pull that picture up?

Welcome to the Forums!
The proper sequence is to have the external display and the MBP on, connect the adapter to the external display cable, then plug the adapter into the MBP. It should auto-detect.
Go to System Preferences > Displays - is there an Arrangement tab? If so, the MBP has detected the display correctly. If not, click Detect Displays.
Also, are you sure your TV is set up to display the signal from the MBP? The MBP should auto-detect, but your TV may need to be set to line-in, or something like that.
I routinely use my MBP with monitors (DVI), projectors (DVI-to-VGA), and have used with S-video to a VCR (with the DVI-to-Video adapter).
Hope this helps...

Strange Mini DVI Problem.

Hello, I've used the Mini-DVI Video Adapter (http://a248.e.akamai.net/7/248/2041/1178/store.apple.com/Catalog/US/Images/m9319 ga_125.gif) for a week without a problem. Just now, I accidently clicked the "Detect Displays" button on the NTSC/PAL window that seems to have disabled the video out function, and reset my iMac display back to my normal viewing resolution. I unplugged the video adapter and restarted my computer, but that didn't help. When I plug the adapter back in, my iMac display remains at 1440 x 900 and does not show the NTSC/PAL window in the System Preferences. Resetting the PRAM didn't resolve the problem.

*Oops, too quick to post.* What I got instead was the
VGA preference window, instead of the NTSC/PAL
settings. I'm still not getting any video output to
my old analog TV... What preference files do I need
to delete to resolve this problem?
Thanks in advance.
ugh.. dammit! i thought i could help you out with the problem but i think i got my self in the same predicament as you! it seems like clicking that button makes the system think the adapter is a VGA input? weird.

MacBook (late 2007) 2.2 Ghz mini DVI to DVI Problem

Hi,
I still got my second MacBook 2.2 Ghz and still have the same problem like before. Always when I connect my 19" TFT Display with the mini DVI to DVI Adapter something disturbs my WLAN Connection, so that i can't load any Webpage in Safari anymore.
Does anybody have some experiences with the MacBook (late 2007) and the mini DVI to DVI Adapter?

Hello,
I do have same problem, it quite annoying, could you please let me know if you find the solution.
Thank you very much. Is Hardware problem, I'm wondering if it needs to be reported to apple.
Thank you.

Mac mini+hp w2216 monitor (DVI)= problems!

The strangest thing happened when I moved my Mac mini (G4, 1.42 GHz) from an Apple Cinema Display (no problems) to a new HP w2216 (1680x1050 wide screen monitor). I connected with a DVI cable. At first, it worked. But after a while, artifacts started to develop, especially when moving windows around, until finally the monitor would not pick a signal. Brought monitor back to the store, where it worked flawlessly when connected to a PC using the same DVI cable. Monitor works fine with analog VGA cable!
Artifacts looked similar to those shown here: http://www.freewebs.com/themagius/minidvipics.htm, so it seems this is some incompatibility between the graphics card of the mini and the HP display. Any other idea how to fix this?

The old G4 mini has trouble with monitors that have something called a non-coherent TMDS (DVI) receiver. The solution is to use SwitchRes X and build a custom resolution using the CVT-RB setting under the "Use simplified settings" option in the custom timing set up window. This causes the pixel clock to lower to a value where the coherency/non-coherency matter is not an issue. Here are more specific instructions for using SwitchRes X once you have downloaded and installed it. By the way, download and install the lighter version of the program instead of the full version. The lighter version is called SwitchRes X Control Panel.
Open SwitchRes X and click on the Custom tab. Click the "+" to start a new timing. A window will open with a checkbox near the lower left that says, "Use simplified settings". Check the box and then, in the associated pop-up, select "CVT-RB". RB stands for reduced blanking and it will cause the pixel clock to lower. Enter "1680" for Horizontal Active, "1050" for Vertical Active and "60" for Vertcal Scan rate. Those are the only three boxes you can fill in. The built-in calculator fills in the remaining values. Then follow the directions for saving and restarting. Now in Displays Preferences should be two 1680 x 1050 timings. One is the standard one and one is the custom one you just built. You may not be able to tell which is which so you'll have to try both. One of them should be stable.

DisplayPort to DVI problems - motion is choppy even when moving windows.

I just got my Mac Pro 8 core (2009). I have two monitors connected to it. Anything that happens on the second monitor(connected to the DisplayPort via a DisplayPort to DVI adapter) is choppy. I can't even move or reposition windows smoothly. Additionally, Final Cut Pro will not let me use the second monitor to play my video out as I could with my previous mac pro (2008) which had two DVD ports.
What's up with this DisplayPort causing these issues?

Oh, I'm sorry, I didn't realize both cards Apple sold as stock came with the mini display port.
So really then your having just problems on the monitor that's attached to the mini display port? That's become fairly typical. Well, I'd still try the update, especially if you only used Software Update which can be lacking at times.
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Highly priced and not highly rated I know, but these were recommended after people first started having problems with these crummy new adapters.
I know myself, I bought two of the $20 dollar priced ones and neither worked well. The adapter only worked for my 20" ACD. But I have the 285 now so no more worries there.
The card you have is a little underpowered anyway, maybe this card would be more to your liking.
http://eshop.macsales.com/item/ATI%20Technologies/100435928/

ATI HD2600 MacPro DVI problem with HP LP2275w monitors !!

booting up from 10.5.1 all was OK... after updating OSX my 2 HP LP2275w monitors stay dark.
it seems the DVI signal isnt present to switch ON the screens.
after some freaking with input selection from the OSD of the HP LP2275w monitor image appears :-/
with 2 monitors (booth are model HP LP2275w) just the secondart one get turned ON, so i need to freak a bit to get the image from DVI.
i tried with a macbook pro/GT8600 DVI output and all works fine !
it seems the ATI drivers after 10.5.1 dont like my HP monitors !!
ah... WHY apple havent done a mini display port - STANDARD display port adapter or cable ????
my HPs have also display port input, but is unusefull cause it seems Apple did every kind of adapters BUT NOT the much obvious one !!!!! aaarrrgggghhh !!!!!
thanks in advance for your help :-))
Message was edited by: faucol

Update: I have contacted Apple Support and after running a few tests, they say that it appears to be a hardware problem. I will be taking it in for repair.

MiniDVI to DVI Problem

Hi, I recently bought a MiniDVI to DVI adapter to connect my 20inch Syncmaster 204B to my 20 inch iMac and ever since I hooked the monitor it flashes randomly just complete black then right back on..Any help would be nice! Thanks!
Mick

Look like it is a intermittent contact problem with either power supply to Syncmaster LCD or DVI connection between iMac and the LCD. Power up the LCD without any connection and observe whether the power LED indicator on Syncmaster LCD flicker or not to determine whether there is power supply problem. Contact problem with DVI connection is trickier unless you have another DVI link or display with DVI interface to verify the DVI connection.
I have similar setup but using 24 inch Syncmaster 244T (component/composite/DVI video inputs) with HDMI cable and two HDMI-to-DVI adaptors. DVI connection used for this purpose can either be single-link (18 pins) or double-link (full 24 pins), DVI-D type (digital only). The reason of using HDMI cable instead of DVI cable directly is because HDMI can be used for my HDTV as well and it come with better flexibility and longer length. If you already have HDMI cable, you might consider purchase of two HDMI-to-DVI adaptors to verify the DVI connection.
iMac Core 2 Duo 2.16GHz / 1GB RAM / 250GB HD / 20" LCD Mac OS X (10.4.9) Firewire RAID, iPod nano

Quicksilver G4 + Widescreen LCD DVI problem - VERY VERY WEIRD!

Hi,
I bought a G4/867 Quicksilver off eBay. It came with Panther. I already have a 20.1" BenQ widescreen LCD.
I installed Tiger, then noticed the DVI display would fail (display strange blue/black artefacts or a 'fuzzy screen'. I have screenshots if anybody wants them. It is intermittent, and usually occurs after one of the following events:
* powering on the computer
* waking from sleep
* switching from VGA (my pc) input to DVI (my mac) via the monitor
I tested:
* another video card (with native DVI): same problem
* another computer (Mac mini): no problem
* VGA: no problem
I returned the unit and got another. I ran Panther on it for a week with no problems. I just upgraded to Tiger. All the problems above are now happening again. It happened both on 10.4.0 and 10.4.6 (i.e. pre and post update).
If anyone has any experience at all in this, please post here or let me know if you need more info.
G4 Quicksilver 867 Mac OS X (10.4.6) 20.1" BenQ Widescreen LCD

Sorry, forgot to mention it is independent of screen resolution.
Native screen res is 1680x1050. And it works perfectly sometimes, just not reliably. Have tried at 1024x768, 1280x1024, 640x480 and replicated the fault on all of them.
It also happens at startup, which made me think hardware. But it could be as the OS display drivers are loading. The fact that it worked with Panther makes me think software.
Images available:
http://www.geekhut.com/mac1.jpg
http://www.geekhut.com/mac2.jpg
If it doesn't fail, the screen looks perfect. The same screen also works with a PC and other macs.
To clarify, the G4 is using an ADC-->DVI converter, but fault in this has been eliminated by:
- using the same converter with another dvi monitor (no problem)
- installing a native dvi graphics card in the g4 (same problem)
David.

DVI problems wif FX5200

Hi,
My Fx5200 does not output DVI. Anyone have suggestions as to what i can do to fix this problem

It either of the DVI-I connection that is being short due to the power failure I supposed... maybe another VGA with DVI-I connector can be placed in to test this out.

DVI problem fixed in new mini or 10.4.3?

Can someone confirm if the DVI issue was fixed in the new mini revision with the new video card ROM revision. I also herd a rumor that 10.4.3 might fix the problem, though I am skeptical about that one.

I have still been having static with the HP L2335 even with 10.4.3 loaded. Was there some additional step necessary? I did see a profile for the L2335, but didn't try to edit it - or even really see that as an option.
I also tried to get SwitchResX to work. I tried for several hours. I never found a collection of settings which would be loaded and made available. I tried using the GTF (simplified) check box and changing the refresh to everything from 55Hz to 75Hz. When I clicked "apply" they all said - available after reboot, so I rebooted. After it came back up, they still were not in the list of available settings - only the same old 1920 x 1200 @ 60Hz. What are the specific settings others have used with SwitchResX?
I finally connected the display by the HP DVI to VGA cable. This let me set the resolution to 1920 x 1200 @ 60Hz, but you can really tell the difference from DVI. The picture has much less crispness and sharpness. It is very soft and fuzzy - good for teddy bears, not displays.

GTX 580 Twin Frozr II/OC dual monitor/second DVI problem

Hello,
I am experiencing a problem with my new dual monitor setup.
A few days after I installed the new monitor (DELL U2312HM), the DVI with the old monitor (LG M208WA) stopped from working.
The old monitor went in power saving mode, and I couldn't wake it up.
After a few days working with only 1 monitor, without taking any further actions such as drivers re-installation etc, the pc boots and the monitor wakes up again!
Today, stopped from working again, after 1 month of normal dual monitor operation.
The monitors are connected to the following DVI Ports (starting to count from left to right, as we face the ports with the PCI-E interface being in the left):
DELL @ DVI#1 (set as primary)
LG @ DVI#2
So, I tried the following:
1. Switched the monitors to the other DVI (DELL @ DVI#2, LG @ DVI#1).
Result: LG monitor works fine, DELL monitor went power saving.
(Meaning that the monitor in DVI#2 is still in power saving mode)
2. Re-installed (in clean mode) the nVidia drivers
Result: no change
3. Switched the DVI cables
Result: no change
4. Searched the forum for similar case:
Result: I couldn't find something similar to my problem...
Is there a test/diagnostic that I can run on the DVI ports to see if there is a hardware issue with my VGA card (if this is the problem)?
Is there something else I should try?
Thanks in advance,
Dimitris

Quote from: delice on 17-January-12, 04:44:15
Is your problem completely gone?
I have the lightning version, same thing happened to me. I will try the last thing that fixed your problem - but if it does not solve or problems start again, I guess the best option is to get a replacement RMA.
This is the second time the 2nd DVI stopped and then started again (with the method mentioned).
After the last time it started working, everything is fine.
While having the problem, I tried to plug in only 1 monitor in that DVI and boot the pc, the boot screen appeared fine, but when entering windows it went power saving.
So i guess it is not an issue of RMA.
I guess Windows or the nVidia drivers under some unknown (to me) circumstances are causing this.
Please post here if my solution worked for you too.

DVI problems

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