Mini dvi to hdmi, tv not displaying imac screen it remains black

just brought brand new mini dvi to hdmi adapter.... when i plug in the accessories the imac recognises the hdtv but the tv screen remains black?
HELP
Chipset Model:          ATI Radeon HD 2600 Pro
Type:          GPU
Bus:          PCIe
PCIe Lane Width:          x16
VRAM (Total):          256 MB
Vendor:          ATI (0x1002)
Device ID:          0x9583
Revision ID:          0x0000
ROM Revision:          113-B2250L-259
EFI Driver Version:          01.00.259
Displays:
iMac:
Display Type:          LCD
Resolution:          1680 x 1050
Pixel Depth:          32-Bit Color (ARGB8888)
Mirror:          On
Mirror Status:          Hardware Mirror
Online:          Yes
Built-In:          Yes
PANASONIC-TV :
Resolution:          1920 x 1080 @ 60Hz (1080i)
Pixel Depth:          32-Bit Color (ARGB8888)
Main Display:          Yes
Mirror:          On
Mirror Status:          Master Mirror
Online:          Yes
Rotation:          Supported
Interlaced:          Yes
Television:          Yes

Difficut to say why it won't work, but my guess is your vintage iMac (about 2007) was never designed to output via HDMI. Your adapter appears correct (thanks for the Amazon link) so if you want to persist, you can contact Amazon and request and exchange to check it. But I suspect you will need to use VGA or if your TV has it DVI which would mean using a mini-DVI to DVI adapter.
One last thought is you could invest in an Apple TV and then do it wirlessly. That would work too but requires and AppleTV to accomplish it, of course you can use the AppleTV for streaming other data too including video, photos, music etc....

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Well, when I use the mini dvi to hdmi to tv series the mac automatically recognized the tv. All I have to do is change the input on my tv and it displays just fine, however, there is no sound. My tv does not have a sound-in port for the hdmi but if you hook up a sound system throught the headphone jack you will be golden.

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I tried it both with Mirroring checked and unchecked. I'm also not sure what my resolution should be set at so that could have something to do with it.
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Hello all!
I just bought http://www.amazon.com/gp/product/B002LEY28O/ref=oh_details_o00_s00_i00?ie=UTF8&p sc=1 from Amazon.com and it arrived today but when I plugged it into my iMac (Early 2008) literally nothing happens. I have tried power-cycling everything, starting up things one at a time, everything. (Searched the internet to!) Here's the specs of my stuff:
iMac (Early 2008):
2.4 GHz Intel Core 2 Duo
ATI Radeon 2400
2 GB 800 MHz DDR2 SDRAM
1 mini-DVI output port
||
I am currently staying in a hotel so I do not have all of my usually electronics but I have tested it on an LG HDTV and a ViewSonic HD computer monitor and both do not work, it just display "no signal" and the iMac doesn't know that anything is different, the blue screen that is supposed to fade simply doesn't and under the "display" section there isn't an "arrangement" tab and clicking "detect displays" just freezes my computer (cannot move mouse) for 1-2 seconds. I ruled out the HDMI cable that I have by using it with my Xbox One and it works fine. Any suggestions?
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Hello Ratnik,
I'm having the same problem. Below is my question.
If you get any closer to a solution, might you please send me the result?
http://discussions.apple.com/thread.jspa?threadID=2456882&tstart=0
Thanks,
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Hi,
I have the 2009 mac mini (2.2GHz cor 2 duo nvidia 9400 256mb) and I recently purchased the Panasonic TC-L37D2 LED LCD tv. I use the mini dvi to dvi adapter with a belkin dvi to hdmi cable I purchased at the apple store to connect the mac mini to the tv. I cant seem to get the display to correctly fill the screen. When I select 1080P the top menu bar is out of view. Basically the desktop is larger than what is displayed on the screen making navigation difficult. I tried overscan but my screen then has black bars framing the entire desktop. Are there any updated display drivers I can try to fix this. I tried the third party software switchresx but I was only able to correct the vertical issue and not the horizontal issue (so the apple pulldown in the upper left corner is off of the screen). Why is it such a hassle to get this working? My buddy has a 42 inch Panasonic plasma and does not have any problems. Anyone know the correct switch resX settings at least? I see that Apple has added an hdmi port to the new mac minis but that just means I should have waited to buy mine. :/

Read my post in Mac Mini to HDTV. A 3rd party utility called DisplayConfigX will allow you to create a custom resolution that will resize the Mac DVI/HDMI output to fit.
It is annoying when that top menu bar is off the screen huh?

Having problems connecting iMac(late 2006) running 10.7.5 to a Samsung Flat Screen TV using separate audio/speaker cable and HDMI standard cable, mini-DVI to HDMI video converter. TV displays generic Apple galaxy background and "some" windows (e.g. scree

Not sure that I have selected the correct forum. Hope my questions are clearly stated.
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In addition to having old hardware, we have Verizon FIOS providing internet and TV access. Is there any way to make this work for us? We would like to stream video (Netflix) and view shows from the Web. Do we need Apple TV to do this? Or is it not possible with our old iMac? My husband thinks that our Airport could be a factor.
Thank you

Lately, I have been seeing a lot of posts with users trying to use their Macs/iMacs to mirror their streaming video from their Macs to an HDTV.
There are, actually, many alternatives to choose from than just from a Mac.
You need to have or invest in a WiFi capable router for all of these examples.
Apple TV only integrates with WiFi and newer Mac hardware. So, if you want to have total integrated experience, if you have a 2011 Mac or newer, you might as well pay the $100 for the AppleTV box.
If you have a older Mac, like I have noticed many users do, then you have other options.
If you want to elimate long cable clutter and having your Mac at the mercy of your TV all of the time, you can still use the AppleTV box independently or purchase cheaper alternative media streaming boxes from Roku, Sony, Boxee or any number of electronics manufacturers that now have media streaming boxes and media streaming capability built into DVD/Blu-ray players.
These eliminate long cable clutter by being close to the HDTV where shorter, less expensive cables can be used.
Another alternative for iPad users is to use an iPad with the USB/HDMI video adapter and use your iPad as the streaming box. This ties up your iPad in much the same way as it does with your Mac, but again the iPad can be close to the TV and use minimal cables to the TV.
Another alternative to is to use a combination of an iPad and your Mac to stream content that is only available to stream online from a computer. In this case, you can use a desktop remote app on your iPad and Mac. A good and cheap Desktop Remote app is Splashtop Remote. This allows you to completely connect your iPad remotely, over Wifi, to your iMac desktop. The app streams both video and sound to the iPad which is still connected to your HDTV. The resultant stream video picture will be smaller than the size of your HDTV, but it will still be plenty large enough to watch. Again, if you own a iPad and an Intel Mac, this method also allows minimal cabling to the TV.

I have a late 2008 white macbook. I have a mini dvi to hdmi adapter, and a hdmi cord. My cannot get my MB to detect an external monitor. Nothing happens when plugged in. Also, my display settings does not have an option for mirroring or arrangment tab

I have a late 2008 white macbook. I have a mini dvi to hdmi adapter, and a hdmi cord. My cannot get my MB to detect an external monitor. Nothing happens when plugged in. Also, my display settings does not have an option for mirroring or arrangment tab

Yeah, I'm having the same exact problem - It seems that the thunderbolt minidisplay port is only able to output the analog VGA signal, not the digital signal to support DVI and HDMI. This is a bug that came up after installing 10.7.1. I bought my macbook air with 10.7 on it, upgraded it to 10.7.1 as soon as I got it, so I have never been able to use hdmi or dvi with my macbook air. This is an extremely frustrating problem for me, I used HDMI on a daily basis with my PC. I have spent many hours at the genius bar running diagnostic tests so Apple can get as much information as possible to create a fix for this problem. I have been emailing tech support for 3 or so weeks now, they keep saying that they are working on a fix and it should be out soon, but 10.7.2 has come and gone and I still have no HDMI functionality with my MacBook Air!

Recently I bought a mini DVI to HDMI converter from eBay for my iMac 21.5 Mid 2011, but only later I realised that it does not have the mini DVI port in that. How can I connect my iMac to a LG smart TV through a HDMI cable?

This is the picture of all the ports from my iMac
This is the mini DVI to HDMI converter which I bought from ebay. And I have the HDMI cable to connect it to my TV
Could anyone please suggest me a solution how I could connect my iMac to the LG smart TV? Also I need to know if this transmits the audio as well to the smart TV?
Suggestions are welcomed. I really appreciate and thank you for your time

I would suggest looking into a Thunderbolt to HDMI connector. In this case, you may be able to use the TV as an external monitor. For this option, please confirm through additional research. I have not tested it personally.
You can also use an Apple TV, which connects with HDMI. In this case, you can use Airplay Mirroring. Not all Macs support Airplay Mirroring, so you need to check first. I have a Mid-2011 27" iMac, and it supports Airplay Mirroring. I don't use it often because my TV is in another room, but I just tried it and it worked. It had to change the screen resolution to work well, so I don't know if I would want to use it as my day to day monitor. http://support.apple.com/kb/ht5404

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Hello Everyone,
I'm having the worst time in trying to connect the following:
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3. 10' (foor) HDMI wire
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i.When I wire everything up, I keep getting"no signal" on my Sony Bravia TV.
ii. It doesn't matter whether I connect the HDMI wire to HDMI 1,2, or 3 on my Sony
iii. On my Imac Hard Drive>>Applications>>System Preferences>>Displays
all I get is a list of different resolutions. There is no mention or mirrors etc.
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Can you also give any solution in very simple and small detailed steps!
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Montreal

Majortrout, there is a major disconnect going on here.
1. You are showing an Ebay link with a mini-DVI to HDMI adapter.
2. You report that you have an Early '09 24" iMac.
3. That iMac does not have a mini-DVI port. That iMac has a mini-DispayPort.
4. You need a mini-DisplayPort to HDMI adapter.
It is physically impossible to attach the adapter to which you link at Ebay to your iMac. So you need to take a step back and figure out what you really have; which iMac, which adapter, etc.
Dah•veed

HDTV won't display as mirror or extra display via mini-dvi to HDMI

Hi
I have a MacBook running 10.5.7 connected to a 1080P-capable Toshishba TV (model 42XV555). I also tried this with 10.5.6 with same results.
They are connected via a "shuttlez" mini-dvi to hdmi dongle and then via a "wegi" hdmi to hmdi cable.
The TV has three HDMI inputs, one designated for computer input via HDMI with a separate input for analogue sound.
THE MB recognizes the TV and displays a separate Toshiba-specific control panel with display control panel is up. It defaults to 1600x90 and 60Hz. The Macbook adjusts every time the tv is connected - there is communication - flashing screen, MB screen re-adjusts.
S-video works fine, via mini-dvi to s-video donglr, then svideo cable.
It has worked twice with the MB and connected with HDMI - just twice. I have spent hour after hour tweaking resolutions, re-booting, changing cables, HDMI ports on the TV etc! When it worked I could mirror and use the screen as a separate, larger display. It worked in clam-shell mode too.
My question is - are there any know problems getting this combination to work (ie MB, mini-dvi to HDMI)? It can work but I am missing some knowledge on the exact combination required.
What are the optimum settings to have this TV display HD from the MB, or come to that any HD 1080p-capable TV??

I'm attempting to connect my MB to a plasma 50 inch Panasonic TV, and am about to purchase the necessary cables from www.monoprice.com.
I've discovered so far that the HDMI connection directly between the MB and the TV (using the appropriate mini DVI adapter of course - product # 4852 at monochrome.com and an Apple HDMI cable which I'll return to get a better price at monochrome) transmits only video/pictures but not audio.
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1) Could audio be transmitted from the MB to the TV using a "Coax (RCA) to Optical Toslink Digital Audio Converter" (product ID # 2947 at www.monochrome.com) to connect directly to the TV (in which case, what digital audio cable would I need to connect the converter to the TV)? And if so, would it be stereo or mono?
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Mini dvi to hdmi problems - displaying my screen on my TV

so I have an Toshiba LCD TV with an HDMI port and I'd like to be able to play videos from the internet on my TV. I have a Macbook with a mini-dvi port so I bought a mini-dvi to HDMI adapter from Amazon and an HDMI cable from Best Buy. I also have an RCA cable for audio (which works fine). After hooking up the laptop to the TV using a multitude of combinations and restarts, all I get is a flickering blue screen on my laptop when I change the TV's input to HDMI. Nothing happens on my TV screen. Any ideas on what I should do to get video? I've read I need to mirror the display but the Arrangements tab doesn't show up on the Display menu so that option doesn't seem to be available. I've messed with resolution and numerous other things and have hit a wall.
Help please!

Hey redhead,
I have the same setup. Try messing around with the cable, it might not be properly connecting. Mine is pretty finicky and can lose connection if it's not sitting "just right". Also, just in case, click on "gather windows" on the bottom of the display settings dialog box. Then check to see if the Toshiba settings dialog box shows up. If it does, that means the TV is actually connected but the resolution settings have not be properly set yet. So if "gathering windows" gets you your TV's settings window, change the resolution to "1080p" if it offers that. If it doesn't, just go through all of the resolutions until you find one that works/works best.

MacBook Mini-DVI to HDMI not working on Vizio VO22LF 1080p

I recently purchased a mini-DVI to HDMI adapter so I can hook my macbook to my Vizio 1080p LCD TV. The macbook detects the TV correctly but no matter what I do the TV never detects the macbook on the hdmi input.
Doing some searches I saw discussion of a bug with 1080p that and a trick to get two 1920x1080 resolutions to show up in the display options but it never works for me.
When I connect to my 42" Panasonic 720p everything works great.
Any thoughts??

This sounds a lot like the problem relating to an Apple disclaimer about the mini driving non-coherent displays which seems to especially affect the original G4 mini. See here under the "Video" sub-section:
http://support.apple.com/kb/SP65
The problem is the timing for 1680 x 1050 will often have a dot clock above 135 MHz. There are really only a couple things you can do; one is to use the VGA interface as you have been and the second is to use a program like SwitchRes X to lower the pixel clock and stay with the DVI interface. If you want to go the SwitchRes X route, download and install it (get the SwitchRes X Control Panel version and not the full version of SwitchRes X) and then write back to this thread and I can take you through the steps you need to perform. You can also get more info from this thread:
http://discussions.apple.com/thread.jspa?messageID=3545154&#3545154

Mini dvi to HDMI with Vizio VW37L does not work

I just purchased a mini dvi to HDMI connector and tried to use my 37 inch Vizio VW37L as a display. It didn't work. Then I read some reviews that MacBook doesn't have a preset resolution that would work with Vizio, nor does MacBook have a way to make a custom resolution.
I was saw some advice to download a program called SwitchResX and I did. This program caused my screen to go gray and I could not find a solution so I had to restore my MacBook.
I want to use my TV as a display via HDMI. How can I do this? FYI I will not put SwitchResX back on my Macbook. It took forever to restore last night being that it is two years old and all the security updates that I don't have on boot disk right now take forever to download and install.
Advice please. Also, would dvi to VGA be that bad? I guess I'm just spoiled with digital video that I didn't even think about trying analog.

Hi there,
I may be able to offer some input as I was successful in connecting my macbook to my HD Samsung Plasma TODAY. I bought the Apple mini-dvi to DVI adapter and the Dynex DVI-D to HDMI Cable. I'm not sure which macbook you have, but you'll have to determine if you'll need the Apple Mini-DVI to DVI adapter or the Apple mini display port connection. So if you have a mini display port, substitute what I have below w/mini display port.
1) Put the apple mini-dvi to DVI adapter in the port on your macbook.
2) Attach the Dynex DVI-D to HDMI to the apple mini DVI to DVI adapter.
3) Attach the opposing end of the Dynex DVI-D to HDMI cord to the TV. On my set it is the HDMI1 (DV1) slot.
4) Check your TV manual to see what the display settings need to be on the computer. In my case it was 640x480.
Hope this helps.

Mini dvi to hdmi, tv not displaying imac screen it remains black

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