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Helpful answers
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Jul 31, 2011 2:34 AM in response to Ponponheadby Bullstrode,Just to say that I have the same problem - MacBook Pro early 2011 originally connected via HDMI to Benq GL2440H; then stopped - 'No Signal Detected'.
Bought a Moshi adapter at the Genius bar to replace the HK one I'd been using with my HDMI cable and it worked fine for a month, even in Bootcamp. Now it's failing again, even on the Mac side, as others have described.
Meanwhile, the old 'failed' adapter and the original HDMI cable still work fine with a Panasonic TV.
Incidentally, I appreciate that VGA is a lost cause for bootcamp although that still works on the Mac side.
Just wondered if BenQ is more prone to the problem than other display units? Alternatively, is there a way to avoid the miniDisplayPort?
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Jul 31, 2011 8:59 AM in response to Media Mogulby Media Mogul,My solution as listed above wasn't stable, it's back to being a problem. I managed to get the Mac to see the TV when changing between 1080p and 1080i but I switched to another display and it vanished. Then when I tried to get it back again it proved impossible.
So I know the HDMI converter works and the cable works, so it must be a temperamental element of the Mac OSX. It would be useful if Apple helped everyone now it is so endemic.
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Jul 31, 2011 9:29 AM in response to Ponponheadby aaron27,What about this makes the behavior so inconsistent?
It seems like everyone has a symptom like, "it worked for a while with this TV, but not that TV."
Does it have to do with the HDMI version of the TV or cable?
My 2010 MacBook Pro 2.4 Core II Duo running Lion, using an aftermarket mini-displayport to HDMI cable, to a 32" Insigina 720p from 2008 doesn't work. The MacBook screen goes blue for a second when the cable is connected or disconnected, but doesn't recognize the display. The TV always displays "No Sync". The same symptoms everyone seems to be having.
Apple really needs to fix this. This is a factory feature that's not working for allot of people. If I wanted a pain-in-the-*** diagnostic process to get factory options to work, I'd buy a Windows system. The thing I love about Macs is that you usually don't have to deal with things like this.
I got rid of my cable provider a year ago and have been using my TV as a second monitor for Netflix and Hulu as my only media source. It works fine with my 2006 MacBook using a mini-DVI to DVI adapter w/ DVI to HDMI cable into my 32" Insigina.
The fact that my 2010 MacBook Pro can't do this is extremely frustrating.
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Jul 31, 2011 2:32 PM in response to aaron27by GabLeroux,Extremely frustrating x1000. We need a fix! I use my mac to show what we're doing at university, in computer science for people willing to study in our university here in quebec. I was using multiple display in an interactive way but I'll need to find an old mac with a dvi output because my new macbook can't do it right with lion. It really s u c k s.
168759 Views 257 Replies No fix.
What the **** apple!?
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Aug 1, 2011 4:51 AM in response to Ponponheadby Alexis Ramel,Same for me with Mac Mini 2010 using mini Display port to HDMI. It works with some TVs but not all of them.. not with mine :-(
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Aug 1, 2011 6:45 PM in response to Ponponheadby Bullstrode,I don't know whether this will work for you but it's currently working for me and suggests that the 'handshake' between my MBP (early 2011) and BenQ LED (GL244), connected by HDMI cable and Moshi MDP adaptor, is the critical point - and time.
Try the following ...
1. Everything off, no power cables connected.
2. Boot up Mac (... this works for me in Mac and Bootcamp)
3. Connect the HDMI cable with MDP adaptor into the display unit (still unpowered)
4. Plug the MDP adaptor into the Mac's mini display port and almost at same time ..
5. Put the power plug (live) into the display unit
With my BenQ, I noticed it was still flashing orange even after pulling out the power cable so reasoned it was remembering something. So, waited till power drained away. When the power plug goes back in, it flashes green - the searching and connection indicator colour. So far, had about 95% success.
Good luck. I'll report back if this turns out to be just another flash in the pan ...
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Aug 2, 2011 5:54 AM in response to Ponponheadby urielgolab,im tired of this trouble.
Bought numerous adapters to try make it work with an unbranded LCD, and cant make it happen.
I'm having the same issue that everyone has here. Blue screen for 2 seconds and no signal then.
My other samsung lcds work ok as i would like on my bedroom's "Daytek 32".
I've tried to contact apple and tell them that this issue havnt been solved since a long while, but figured out that my warranty is over (Macbook Air 11 bought on March).
If anyone is able to report this post and open a support issue with apple, that would help to solve this problems.
Thank you.
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Aug 2, 2011 11:07 AM in response to urielgolabby gustambro,Same issue here! Just bought the new mac mini and receive no video output with my Philips TV... Just got off the phone with Customer Support and they told me that at the moment Lion does not work with Philips TVs and that they have escalated to the engineers looking for a solution. This will of course, be fixed in the next software update but no idea of when will it happen!
So, at the moment, Philips and Lion customers are in the dark... :-/
I guess the same for your Daytek 32...
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Aug 2, 2011 2:44 PM in response to Ponponheadby pek33,I've the same problem since I updated to Lion. I worked nicely with my 13" Macbokk Air and SL 10.6.8. I ve a Deal extrem mini dp to hdmi cord and a SONY Bravia TV. I've tried the PRAM reset... No effect. I'm really not happy with Apple/Lion. So what's the problem ?
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Aug 2, 2011 6:00 PM in response to akreidby simonfromkingston,I am using the Kenex mini DVI to HDMI cable (bought from apple site) from a MBP 17" 2010 to a Epson 8350 projector. Kenex informs me this cable works with my MBP and Epson 8350. Worked fine until the apple system update. Now just message on projector 'No signal' and sometimes for variation 'Not supported'. It seems apple are protecting copyright above functionality. Does anyone from apple ever read these postings? If so this should be fixed ASAP. This is not good enough for consumers. When the mini dvi is connected the sound on the USB port is blocked to my DAC too. Unplug the Mini DVI and itunes works. They really have gone over the top with that copyright protection with HDMI. I am seriously tempted to get a third party solution that removes the hdmi encryption.
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Aug 2, 2011 9:54 PM in response to simonfromkingstonby frederic1943,HDMI is a badly designed interface developed for the purpose of controlling content not a superior signal. Since control could not be done with analog connections, HDMI was a new digital alternative to allow whoever wanted to control the content with HDCP.
Problems with HDMI are not usually with the cable but is in the HDCP copy-protection protocol. There was a technical paper from the HDCP group pointing out that some developers of switches are making incorrect assumptions about the way to handle HDMI/HDCP standards.
HDMI is being pushed because of the copy protection. High-bandwidth Digital Content Protection (HDCP) is a form of Digital Rights Management (DRM) developed by Intel Corporation to control digital audio and video content as it travels across Digital Visual Interface (DVI) or High-Definition Multimedia Interface (HDMI) connections. The specification is proprietary, and creating an implementation of HDCP requires a license.
HDCP is licensed by Digital Content Protection, a subsidiary of Intel. In addition to paying fees, licensees agree to limit the capabilities of their products. For example, high-definition digital video content must be restricted to DVD quality on non-HDCP compliant video outputs when requested by the source. DVD-Audio content is restricted to DAT quality on non-HDCP digital audio outputs (analog audio outputs have no quality limits). Licensees cannot allow their devices to make copies of content, and must design their products in ways that effectively frustrate attempts to defeat the content protection requirements
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Aug 2, 2011 10:51 PM in response to frederic1943by GabLeroux,Yeah, HDMI use HDCP protection, whatever. Stoping users that bought computers at thousand of dollars and wanting to duplicate a screen already being shown in a smaller ppi is not about content protection, it's a d*mn user jail! Why would an apple branded cable have more rights than others, seems to be all about money out there. What about if my macbook screen die and I don't have that uncomment warenty and no 1000$ waiting around to be spent for a screen repair.
That's right, with your new computer, you don't have the right to use a screen or a tv, even if you paid it 2500$.
Because of this $?%&*! update, I'll have to use a pc for my slideshows and courses!
frederic1943, I don't know if you're an apple guy or only a good guy informing us about that HDCP thing, I can't see your face while reading this and english is not my primary langage, but it's nothing against you:
It's all about Apple and a computer feature being featured and not being working as it is said to be.
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Aug 2, 2011 10:51 PM in response to frederic1943by simonfromkingston,How depressing.
Can't wait for this technology to become history. I can see people talking to future generations about how they used MDP to HDMI and people asking:-
"Really! But that technology never worked properly and they knew it. How many years did you try to get it to work for?"
It reminds me of ADB to USB adaptors. What a joke they were. The apple techs at university, unable to get them to work eventually give them away free as a challenge to see if anyone else could get them to behave consistently. No one ever did.
I have about $3000 invested in using my projector as a desktop monitor ( I don't care if it is not encrypted) and all apple and their intel buddies cares about it protecting data and looking after share holders. Anyone looking at this posting is paying for the 'joy' of being a beta tester for mini DVI to HDMI, an interface that should never have gone to market.
There is no hope for you, apple has forgotten you. Apple never reads these posts. No money in it, one could say.
I cling to the hope that history will prove me wrong.
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Aug 2, 2011 11:01 PM in response to simonfromkingstonby GabLeroux,It already worked in the past, why wouldn't it be working today :/
And what if we all call Apple and ask them to fix this, maybe no one is being paid to read this, but some are being paid in the custommer services.
I know that starting a petition or getting Apple in justice would be too much effort for that and Apple probably have the right to let it that way, but we can still give a try at their number. I wish history will prove me wrong too simonfromkingston.
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Aug 2, 2011 11:10 PM in response to GabLerouxby simonfromkingston,Okay Great idea! Let's start a petition.
To Apple Corp
On Behalf of all Apple customers that use any Mini DVI to HDMI interface will you please work very fast to solve any hardware or software issues relating to this interface.
Signed
simonfromkingston