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.
I'm glad to hear that the Lion upgrade solved your problem. Unfortunately I'm already running the 10.7.2 version on my Mac Mini, and the problem is still there.
And you said that you got the white boot screen (I assume the one with the Apple logo?), but I don't even get that. There's no signal between my Mac Mini and my receiver/TV what so ever.
So my temporary solution is this:
As I mentioned in my previous post I share my Mac Mini screen with my iMac. So when I turn off my TV and/or receiver I have to make sure that the screen sharing is up and running on my iMac. This way I somehow "force" the Mac Mini to maintain a connection to my receiver/TV.
If I forget to turn on the screen sharing before I turn my TV/receiver or Mac Mini off it really is a 50/50 chance if I get a connection to my TV/receiver when I turn the Mini back on...
I also have the 1.4 version of the Efi Firmware.
Hi Nicolas, and welcome to the club.
Not sure if the HDMI port #4 solution really solved your problem or if it was just luck. I'm saying this because it's a hit or miss if or when I get a signal from my Mac mini. Sometimes it helps just pulling out the HDMI cable from my mini and putting it back in. Other times I have to do the full restart of both TV and receiver... AND the Mac mini.
Let us know if you experience the problem again... and what you did when it happened.
I found a real answer and none of you, and I hope Apple, will like it. I hope Apple hates the answer so maybe Apple will do two things - distribute an upgrade with a fix and FIRE the SOB that deleted the driver that was in the previous OS.
The fix is simple - Bootcamp - dual boot to Windos 7. Works GREAT for every 1080i and 1080P I have tried so far (Phillips, Samsung, Westinghouse).
How is that Apple!!!!
Fix this problem. Until then, I will be runing Windows on my Mac for all my video needs - seems to defeat the purpose of buying Apple.
I have the latest EFI 1.6 for the mini, do you run it through the 667 receiver and it works fine now at 1080p?
Donald177: Thx for the help but i has already turn down the resolotion to 720p, works good, but when i watch movies it would be nice to run it in 1080p.
Cheers!
Try this:
1. Download http://www.mediafire.com/?fdz29bgsg3zm653
2. Unarchive it
3. In the Finder, go to (using cmd-shift-G) the directory /System/Library/Displays/Overrides/
4. Place the entire directory you unarchived in step 2 (DisplayVendorID-410c) in the directory /System/Library/Displays/Overrides/
5. Reboot
It works for me and fixes miscoloration that appears after a while every now and then when usng the HDMI output of my MBP.
I am on MBP Retina 10.8.3 and here's what solved the issue for me:
1. Installed SwitchResX (Trial, no need to pay yet).
2. SwitchResX > LED Monitor (my second monitor) > Current Resolutions tab.
3. Changed the default resolution to any other resolution.
4. Issue solved!
Or, why not plug it directly into the TV?
Gym brown, you'll need access to a screen somewhere or someone else with a mac for screensharing to be able to see what you're doing.
Good Luck
I wonder if you have another brand TV if you need a different VendorID in the first command. A call to Apple might be in order to find what to insert there. Hope this helps some others!
Anyone try the 10.7.2 update to see if the problem is fixed? The Apple notes accompanying the update don't seem to mention the Mac Mini HDMI issue.
Same issue except the 30sec-1min solution does not work for me and my screen remains scrambled. Fortunately I have a Apple Cinema display which I used to enable screen sharing.
Hope this gets fixed soon!! Pretty gutted as I first ran the upgrade and then blitzed the Mini because the display was blank, did not expect it to be an HDMI issue!!
I've got the same problem with my mac mini 2010. After upgrade to lion I have HDMI issues. No signal through my Samsung Led TV connected directly to hdmi mac mini port. I hope Apple to provide a quick solution to this serious problem. It is unacceptable!! Please fix it ASAP..
I believe my Mac Mini is now out of warranty (just). Anybody contacted Apple support directly as opposed to this forum?
I can't find the original disks for my Mac Mini and the retail Snow Leopard disk that I purchased will not install so I am left with a somewhat bricked Mac Mini. Not impressed with Apple at the moment. I have a new Macbook Pro with Thunderbolt that now causes my Apple Cinema Display to flicker and scramble and now my chuffing Mac Mini has been screwed by Lion! Not impressed with the testing!
I like to think that it's almost impossible for the Apple not find a solution for this within the next few days. Until then I will try to stay calm...but I believe that the Lion starts was not so good for me.
No HDMI means a dead Mac mini for me..
Same issue here with my 2010 Mac mini connected to Sony Bravia LCD tv. Have got it booting with mini display port/VGA but this is not an ideal solution. It all used to work flawlessly under snow leopard.
No Signal on HDMI TV After Lion Upgrade
