Why is my Mac not displaying anything to my LCD tv using HDMI?

Posted by Pure.Krome on Super User See other posts from Super User or by Pure.Krome
Published on 2010-04-27T15:06:34Z Indexed on 2010/04/27 15:13 UTC
Read the original article Hit count: 249

Filed under:

mac

|

hdmi

|

lcd

|

displayport

|

mini-displayport

Hi folks,

I've got an iMac desktop computer. Love it. I wish to connect it to my LCD TV using HDMI. There is no HDMI output on the iMac so i had to buy one of these bad boys :-

alt text

so now I can output video (via the mini Display Port) and sound (via USB) through this box, to my LCD.

Works great ... with a single direct cable.

I have another 3 or 5 metre cable inserted into my wall, so i do not have to have a silly hdmi cable floating in the air between my iMac and my LCD TV. When I do this, there is no picture.

To better explain all of this, i made a quick video explaining my problem in detail, so you can exactly see what is going on/wrong.

I've also tried changing the output format for the TV from 1080i down to 720p and even lower .. incase the cable in the wall doesn't allow 1080i.

here's the video with the full explanation :- http://www.youtube.com/watch?v=ZkKRKnRIh6Q

(NOTE: I incorrectly said in the video that the hidden wall cable is 10 metres long. me == fail. It's 3m or 5m...).

Can someone please watch it and suggest some ideas to getting it working?

© Super User or respective owner

Related posts about mac

Need a non-Mac keyboard alternative for Mac users

as seen on Super User - Search for 'Super User'
I'm a Macbook Pro user. I like Apple products in general, but I hate their keyboards. I work on my computer/laptop 10+ hours a day, so I would like to have a keyboard that is Mac-compatible and ergonomic. I found this one on Amazon. It is specifically made for Mac. However, I would like to get some… >>> More
Including an embedded framework using a cross-project-reference: Header no such file or directory

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm trying to create a Cocoa framework by using a cross-project reference in Xcode. I have 2 projects: one for the framework; one for the application that will use the framework. This framework is not intended to be stored within the system; it is an embedded framework that lives within the application… >>> More
C# development with Mono and MonoDevelop

as seen on Developer IT - Search for 'Developer IT'
In the past two years, I have been developing .NET from my MacBook by running Windows XP into VM Ware and more recently into Virtual Box from OS X. This way, I could install Visual Studio and be able to work seamlessly. But, this way of working has a major down side: it kills the battery of my laptop…… >>> More
12.04lts: no network internet

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
Friends-- Cannot connect reliably to ethernet nor at all to Internet: Symptoms: About 2 weeks ago did an upgrade. Have not been able to connect to ethernet nor Internet. Today, for example, boot up this System76 laptop and there was no network connection. Did sudo mount -a and got some internal… >>> More
Why i disconnect every few seconds? using USB wireless adapter

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
i know it's for ubuntu questions..but mint and ubuntu are very similiar and i had the same problem with linux ubuntu too..so i think this is the right place for my question anyway i don't have experience with drivers and other things,after installing Linux on my machine( i did dist-upgrade btw) everything… >>> More

Related posts about hdmi

HDMI Sound Stops Working

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
When not used for a few hours the sound stops working on my HTPC. To get sound to work again I have to unplug the HDMI cable and plug it back in again When this sound "outage" occurs, the HDMI device dissapears from the sound config output devices I see the following in dmesg [78534.010328] HDMI… >>> More
DVI+HDMI out, at startup only HDMI is available

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I have my computer next to my hdtv. The main screen is connected via DVI while the tv is connected via HDMI. If I start the computer without the HDMI plugged in, everything is ok: I see the login screen and sound is output through analog out. But if the HDMI is plugged in before I start the computer… >>> More
EHome IR receiver and Ubuntu 13 - any one have this working?

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I have a "generic" USB IR receiver I purchased off of Ebay to make my life a little easier with XBMC on my Ubuntu box. I am currently running 13.10 and have never tried nor have any knowledge of IR in Ubuntu. I know of lirc, and I know a lot of it is now included in the kernel. My understanding… >>> More
HDMI-HDMI cable length

as seen on Super User - Search for 'Super User'
I'd like to connect my PC to an HDTV using an HDMI-HDMI cable. The distance between them is about 8 m; is the length going to be an issue? I'm worried the signal might deteriorate over such a distance. Also, does price have any major impact on the signal quality? I'd like to buy an 8-10 m cable for… >>> More
Another sound not working post

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
Tried all the other "sound not working" posts i think, lost count. purge/reinstall alsa and pulse, reboot, add user to audio group, various lines in the alsa config file such as "options snd-hda-intel model=" then tried different options like generic, auto, basic, default, etc. tried pulseaudio -k… >>> More