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.
A system which cannot perform a fundemental auto
discovery of a connected video display is just a totally
unacceptable oversight, especially when there was no
issue whatsoever in the previous OS.
From what I have seen so far, if anything is just slightly
different from ONE set of conditions, you get a borked system.
You then have to jump through hoops to get it back.
This is not the only serious issue with Lion. Apple is losing
credibility as everyday passes without an update to correct
this issue and others.
Similar problem here.
Upgraded to Lion -> 😟
Mini connected to Samsung HW-C500 receiver -> Samsung LED/LCD 55" series 8000 TV all via HDMI. I have not been able to see my mini for more that a second. The TV keeps flashing on the mini desk top for a second then a gray screen then a green screen and the same over and over again. No luck with unplugging or restarting the system.
Will have to find another monitor to install any upgrade when it becomes available.....
Just adding my voice to the crowd. I'm having the same problems with a Sony Bravia. 9 times out of 10 there is no signal. The odd occasion it did work was pure luck as I did not remove any cables. I am not taking any chances by shutting down I just put the mini to sleep.
Took some of the earlier advice and reported it to Apple.
@woodmeister50, what yamaha receiver do you have? I have an rx-v767 and can't get 1080p via HDMI through it.
2011 mac mini, connect to sony bravia direct - 1080p no problem (50p/60p/24p)
connect through yamaha rx-v767, 720p ok, 1080p/24 ok, 1080p/50/60 NOK. My PS3 plays 1080p/60 through it fine, so I dont think its a problem with the receiver.
connecting direct to the TV isn't an option as I want all my switching through my amp, and I want audio passthrough so I can listen on the TV speakers sometimes.
So I'm stuck with 720p until we get a fix (and that flickers occasionally)
Having a very similar problem. Logging in with a normal account and the screen on my Samsung 50" plasma TV goes black. Logging in as the administrator, everything works fine. Occasionally, I can log in with a normal account and things are fine.
I have an rx-v767 and also can't get 1080p via HDMI through it to my 50" Samsung. 720p,1080i both work, but 1080p doesn't.
I don't want to use 720p and I also don't want to use spdif for audio either (because that won't work with DTS-HD - or so I'm told).
When I don't use the Mac Mini as HTPC is runs in the background as a server, so turning stuff on/off i a special order won't work for me.
Realy hope to se this fixed in 10.7.1
I bought a new mac mini today. Bought an HDMI cable. Booted it up connected to my Insignia LCD NS 19 720p TV with HDMI port. Setup Assistant came up asking me if I wanted English, when I selected that and hit continue the screen when to silver lines, unusable, never comes back. If I turn off the TV and back on, the picture returns...until I hit continue on the next option...again the screen blanks. At this rate I'll never get to the point of trying to change a resolution or anything. Really unusable, very dissappointed this doesn't work.
The TV also has a VGA port...if I get the DVI to VGA converter...does anyone know if that will work? I know the resolution won't be very good, but I need it to work.
thomasmb, you are correct about spdif. It doesn't support
any of the HD audio formats. It is basically a bitrate issue.
SPDIF just doesn't have the bandwidth.
I also understand your dilema. I quite often like to let the Mini
crunch on some data and while it's doing that switch to my
cable box and watch something. But now when I do that,
when I switch back to the Mini, video goes bye-bye and need
to go through the whole nonsense again. Also, used to
set up to download a bunch of videos from iTunes and
would shut TV and receiver off while I went about doing
doing whatever. Can't do that now.
I stumped two apple techs a day or two after the launch with this. One guy said he WOULD call me back in two days and had never seen an update take more than a week and a half. Well, no call and it is nearing a week and a half in a couple days. I am going to remain patient for a little bit longer hopefully. Check out my woes list with the display problem near the end. I have figured out a few so far. Using a backup 14" Dell square display AND IT *****!
Where is any update??? PLEASE!
I got the same problem about the null HDMI signal problem. i just reviceve my new mac mini for a few days, and want it connect to my LCDTV as media centre. should I return the goods to Apple as a product defects and ask for refund directly?
so you say this will work with the minidisplay port to hdmi using the LCD TV as a second monitor? cause everything worked fine before Lion, I used to have Snow Leopard updated up to date and after I bought the Lion OSX this started happenning and I am from Argentina, we have an apple store here but whenever I need to ask something to the "genius" guys from here they look at me as I were talking about sky rockets and not apple stuff.
I believe this will work yes.
This is what i did to make it work on a Mac Mini 2011, tried with direct connected HDMI and also tried a MiniDisplay to HDMI converter to TV, both worked.
It believe it will work on non minis as well.
that actually worked on the macbook air. Thanks but i have 2 questions. After the 10 day trial os over will i have to purchase this for the fix to be permanant? And on the mac mini, is it possible to use a display that works to set the setting for display, or does the mini have to be hooked up to the monitor thats not working to calibrate it?
Thanks your solution was the first that has worked, and apple as always is dragging their feet and providing nothing.
I tried but had no luck. I dont have another screen, so I tried with a Single user mode and typed the commands. But could not connect to it via a vnc client. On a windows laptop I tried using TightVNC but could not connect to the Mac. I found the IP address via the DHCP list but the connection would just not go through!
Perhaps I am doing something wrong? 😟
Well, so far, I am still getting my video when I boot.
I have not done anything else since the items I had
previously posted. I just adhere to my start up
sequence.
I have seen an occasional oddity though. Sometimes
when I start up I get and "active" black screen instead
of the typical Apple spinning wheel screen. It then
displays the desktop as usual. When I say "active"
black screen, I mean that the monitor is receiving video
(the monitor doesn't have no signal message), it's just
an all black screen. Not sure what that means, if anything.
At any rate, I am enjoying all my movies on iTunes, PLEX,
Netflix, and DVD's. Still have the nagging audio issue that
they finally fixed for 10.6.8.
Haven't tried booting my bootcamp partition so I can watch
BluRays for fear video may get hosed yet again.
The clock is still ticking for a proper fix Apple. Tic-toc, Tic-toc.
No Signal on HDMI TV After Lion Upgrade
