I just installed Lion on my Mac mini and my TV no longer receives a signal over HDMI. I've tried a bunch of different cobinations of restarting the TV and computer without any luck. Without a display, I can't use Screen Sharing to try chaning any of the prefrences. Does anyone have a solution to this problem? Thanks.
For everyone who is having HDTV display and digital audio output problems take the advice of a few of the other posters here and go out and purchase Gefen HDMI Detective Plus. It retails for $129 but Amazon has it for sale for around $80. It will fix your Mac HDMI out video and audio problems period. Yeah it ***** you have to buy it but if you have the HDMI problems it was designed to fix you already have spent several thousand dollars on computer and home theater equipment so what is another $80 to keep everything working right.
By way of background, I have a late 2010 Quadcore I7 Imac, which also doubles as a HTPC for a 7.1 speaker set up in my loft with my Denon 4308CI amp and Panasonic HDTV (via a long 100 ft HDMI run). I use the Imac bluetooth keyboard and trackpad in the living room to control the Imac when viewing on my HDTV. The set up worked great with Snow Leopard until the 10.6.8 update killed my digital audio. I reverted to 10.6.7 to fix the issue until Lion 10.7.1 was released and I read on another Apple thread that the HDMI out issues had been solved. When I upgraded I lost both HDMI video and audio and I was hoping that 10.7.2 would solve the issues but it did not.
Anyhow, I was getting ready to go back to 10.6.7 again but read this whole thread for solutions and stumbled on the Gefen hardware solution. After doing some research it seems that many HTPCs have HDMI out problems with software updates and AV receivers and not just Apple. I bought the product, spoke to Gefen tech support before the set up as their instrucitons are a little unclear but after that I set up the product in no time and now everything is working perfectly once again. Best of all, I don't have to worry now about future software updates killing my HDMI out video and audio again.
BTW, if you use a AV receiver with your Imac just use one of the preset Gefen generic codes at set up as storing your HDTV's EDID in the Gefen may not allow you to push multi channel digital audio as well as video from your Imac.
Thank you so much venturas. I have not had use of my mini the second i downloaded lion launch day. Put that command in restarted, had to reset pram during start up, then whooosh WORKED. i work at apple and nobody was able to help! thanks man!
Method to enter terminal command':
In Mac OS X, what is the Terminal, and how do I access it?
The Terminal is the easiest way to access the Unix prompt in Mac OS X. If you're familiar with Unix, you may recognize its similarity to
xtermOpening a Terminal window
To open a Terminal window:
GoUtilitiesTerminalNote: Be careful to enter commands precisely; entering the wrong command can render your computer unusable or cause other problems.
URL link from here, http://kb.iu.edu/data/akpx.html , let us know whetehr the method work for you
I have to concur with this statement ... my mini had no issues whatsoever with Snow Leopard on the exact same setup. Having to add a $100+ piece of hardware to workaround software bugs is kind of like using a shotgun to swat a fly. If indded, as an earlier poster pointed out that the hardware is to blame (trying to detect through an AVR) then why did it still work if I zapped the PRAM but not on a subsequent reboot?
Lion has some serious issues and hopefully Apple will fill in the cracks soon. If they don't I think that a lot of people are going to be reverting back to Snow Leopard. You can only dangle a carrot in front of faces for so long until you get bit and honestly if I didn't need to support Lion users I would have reverted already, but sadly I need to keep on top of all the bugs and issues so that I can help others figure out how to work around them.
I think Lion is the buggiest OSX release I've seen since 10.1.
Do you actually expect Apple to test every AVR out there to make sure it's OS compatible with one of their lowest selling machines? Mine wasn't working even with Snow Leopard. Things break with OS upgrades, that should be expected. If there's anything that's critical for you, wait. Jeeeze.
No I don't expect them to test every Tv but it might be nice if the mini, who's primary video output is HDMI worked with certified HDMI 1.3 sources (which my AVR is). If it is indeed EDID problems that the hardware fixes then it's Apples problem. The AVR has a valid EDID or it wouldn't have passed HDMI certification and if removing a forced default in the OS resolves the issue it's certainly ansoftware bug.
Many of us have trouble even when connected the HDMI directly on TV.
What is the solution for all of us?
To return back to snow leopard?
It is at least ridiculous a new operated system to face such kind of problems
with my brand new Samsung LED TV.
So far Venturas, the command seems to work. I will
see over the next few days whether it is a permanent
fix or not.
The whole point of HDMI is to have a unified
video/audio/control interface!!!! What ever Apple
did to the code for the Mini in Lion just plain broke it!
Granted, a few folks had issues with Snow Leopard
(me not being one) and now their FIX has broken
the majority of users, including those with brand new
product! And those with issue NOW, had none with
Snow Leopard!
Apple just plain went against the simple paradigm,
"If it ain't broke, don't fix it"
Venturas, that simple fix seems to have done the
trick so far. Ran with just the TV on, switched from
my STB to the Mini and still works.
Now, if Apple would release an update to fix the audio
everything would be peachy.
I have a MacBook Pro 17-inch 2.4GHZ:
Processor 2.6 GHz Intel Core 2 Duo
Memory 5 GB 667 MHz DDR2 SDRAM
Graphics NVIDIA GeForce 8600M GT 256 MB
I have this problem when my computer goes in sleep mode, it freezes. Someone told me that it was due to the graphic card. I don't know if anyone has the same problem with the same video card.
I posted a solution on page 7 of this thread some time ago, only one other person followed the instructions correctly and it worked. I guess my solution drowned in the masses of posts.
Anyways, i can confirm that the solution(trial software) i posted still works even after the 10 day trial expires.
Samoel: I did see your solution, and although this may sound stupid, I think its ridiculous that I should have to install 3rd party software for basic functionality. Furthermore, when I tested your solution later, it did not work for me. Same as allways, the TV says no signal detected. But thank you for the sudgestion, it was absolutely worth trying.
720p and 1080i work fine, 1080p doesn't (and yes, the [samsung 50" plasma] is 1080p capable equipped with hdmi 1.4 - and so is the receiver [yamaha rx-v767]) - 1080p works fine when i connect it directly to the tv, and has so since I got my Mini 2011.
I have a Yamaha RX-V 3067 (Modell 2011) and Samsung TV LED TV UE46B7090 and i have the same Problem. No Signal over HDMI. Direct connect to my TV ist works. What else can I do?
The fix from Ventura doesn't work. My Mac Mini si the newest Modell with intel core i5...
Apple please get the fix in Lion 10.7.2.....;-(
This is extremley frustrating, and I will be phoning apple in attempt for a refund for Lion.
Setup : Dual booted Mac Mini 2010 connected to a TV (46" Samsung) by HDMI cable, no remote access.
Problems:
1) The most serious, when I turn the mac mini on I no longer get any picture! I have to take the HDMI cable out and put back in to force the picture.
2) I can no longer get into the boot option during startup, my tv says the resoultion is not supported. Thus I cannot boot into my windows partition, or to any cds. (Unplug & plug in doesnt work)
3) WHen I restart my mac mini, I no longer get the sound to say it is powering on nor do I get any picture. The mac mini powers off after pressing the button once as if it is stucking at the boot up. (dont need to hold the power button down as if it was waiting at login screen (Unplug & plug in doesnt work)).
Not to mention the generaly slowness of lion. It is like upgrading to vista all over again.
HarrgHoyy, do you have any Firewire drives connected
to your mini?
I have a 2010 with Lion installed and found
that if I have a non-bootable Firewire drive attached and
attempt the "option" boot so I can boot into my Windows
partition, it will hang. If I do it without that drive attached,
it will "option" boot normally showing a bootable volumes.
Also, if I attach my Firewire clone drive it will also
"option" boot normally an shows the clone volume as
a boot choice.
It appears something is amiss in Lion with GUID partitoned
drives that are not boot volumes when one wants to "option" boot.
I was writing the earlier post in the early hours of the morning, so I feel I may have been a little harsh about the situation, it wasn't fair to compare this to vista. It was still slow even after the indexing had finsihed so after reading a bit more on google at other people experiencing lion being slow, it turns out it was to do with parallels. Looking at the processes, the dock was taking >90% of the cpu. With parallels there is an option to have the windows applications folder appear in the mac doc menu. Disabling this option showed a dramtic increase in speed. Resolved for me. But still having problems with the HDMI port on start up.
No Signal on HDMI TV After Lion Upgrade
