No Signal on HDMI TV After Lion Upgrade

I have a Mac mini connected to a Samsung Syncmaster 2443BWX with a Display port to DVI connector and a Philips 32 LCD connected with the HDMI port. The HDMI stopped working after the LION update(it hangs the computer or the TV). I was about to go back to Snow Leopard since this feature is very importante to me. Please keep me posted with any update.

Thanks.

I just bought a ViewSonic VX2453mh-LED Monitor. It doesn't detect signal when I connect my Macbook Pro via HDMI cable. I don't know if apple doesn't support the display or if it's OS X Lion. Either way it's frustrating but I know this is the price of early adoption. I hope like everyone else here that 10.7.2 will fix the issue.

I am not sure if I have the new OS Lion problem, but I reecently bought a MAC Mini and the HDMI simply could not communcate with the Philips 37" TV. After the initial Grey Apple Logo and the driving wheel, everything has gone black and that was as far as the $6900HKD has took me. Call up Apple and took it to the Apple Centre, no one seems to even have slightest clue what is going on and unable to help out. I am a recent convert from PC and had never been so frustrated and upset about computer before. For PC at least there are more people using it(seems to be that way) and you can get help easier, for Apple, if the Apple Care is rubbish (like my case) you are doomed. FYI, the Apple Care assistant didnt even seem to know what HDMI ot MAC Mini is, she was just trying gave me some template answer and at some point blame it was my TV. The retailer also refused to refund and only help i received was a DVI adaptor and gave me some wishful thinking that it should sort the problem out.

Is there someone out there who has bought a new Mini and suffer same problem as me? Is there light at the end of this tunnel? Am I on my own to sort this out and possibly ending up buying a very expansive aluminium domestic sculpture? Please Apple, this is within the domain of your website, if you see this please contact me and fix this. Being your customer first time has been big torture for me and this is the second weekends I have dedicated my time working for Apple to browsing for solution online.

I have a brand new MacMini and a Insignia LCD19 Inch. I have updated to 10.7.1. I still have the same error scenario when I hook it up via HDMI cable. I get a screen with an outer space picture that looks like a shot of the milkie way. There is also an iTunes window on the side. Anyway it seems like a static shot. After about 30 seconds the screen scrambles.

I'm back to VGA.

I see many posts for Phillips. Does anyone know if those commands referenced here work for other than Phillips?

It sure seems HDMI is still an issue to me. Thanks much.

It seems that there are still a lot of users still has problem with the new Mini and Lion AND is not fully resolved yet. There is obviously a fault in the machine(or in the Lion) and what I am surpised is that this is within the vacinity of the Apple website and the company seems not to be bothered at all about our dis-satisfaction even though we are making noises right outside their doorstep. I am a new MAC user so I might be wrong but I suspect Apple are sitting back and drinking tea and let us resolve the problem for them. This is madness to me.

Not a solution for you guys but after I was unable to re-install my Mac Mini back to Snow Leopard (due to misplacing the DVD), I bought a new TV and all is happy. I have another issue ongoing with Apple at the moment with a flickering Apple Cinema Display after my 2 year old Macbook was replaced with the latest Thunderbolt model. This has been ongoing for sometime now with no resolution (even though they manufacture both computer and display) so wouldnt hold out too much hope that this gets resolved any time soon!

Good luck though!

This solution does work, however if you payed for a product it should work without a workaround. I would wait for update 10.7.2 if you can wait. What it fixes now may break something in a newer version.

joost, to VNC into your Mac, I put some instructions a bit further up..sec and I'll repost:

Just an FYI, the console commands are unecessary. You can enable screen sharing in Preferences. This is for those that don't like using terminal.

You'll need to perform this on the target Mac you want to remote into:

Open Preferences

--> Internet and Wireless

--> Sharing

Click on Screen Sharing. Add the user accounts you want to allow remote screen sharing for.

The rest you can do from any other Mac by remoting into your problem Mac via VNC:

After that, as already mentioned, you can use Finder to connect to the PC, or just use it's VNC address from the finder GO menu: GO --> Connect to Server --> VNC://computername.local

Note: If you don't want to be bothered with being prompted to choose a login under lion or to bump another account off, you can just specify your credentials in the VNC command like so:

vnc://username:password@computername.local/

So in the above example if my username was widget and my password was dohickey and my Mac was called home1 then it would look like this:

vnc://widget:dohickey@home1.local/

I upgraded to 10.7.1, which didn't solve the problem

Type in the stuff in terminal ( cd system/library/ Etc etc ) and shut down the mac mini after that. Plugged it into the tv and... It works !

Great guys, thanks for this. Appreciate the input here.

The terminal command seems to have solver the problem BUT the resolution and calibration is all wrong, quality display is not acceptable and I believe that it is a temporary fix and still yet to be properly resolved by Apple. My TV is 37" Philips BTW.

@Venturas: i just bought a new mac mini and i have Philips TV plasma. I checked on page 9 and how to open the terminal commands? I can't continue after the Apple grey logo and spinning wheel.

Can you please help to give me a guide step by step......anyway thank you very much for your help

Cheers

All,

After a couple of weeks struggeling and working with an additional screen I have used the commands in terminal as per page 9 of this topic and got my Philips 31PF9830/10 working again in 1080i.

I do have the impression that the resolution is a bit lessbut much better then nothing. Hope that Apple is kind or smart enough to have a proper fix in 10.7.2. However I will not upgrade untill I know for sure that it will work.

Thanks to all people helping to solve this problem !!

Kind regards,

Robert

Hello there.

Something weird going on here. I've tried to set up a connection between my iMac and Samsung HDTV via HDMI some time ago and it didn't work. Today I thought ah well I'll plug it in and i'll see what happens. Well, it worked! So I did a happy dance, shut both the TV and iMac down and went off to do other stuff. I came back, tried to view my iMac via the TV and it was a black screen. Never got it to work again o_O

I'm running 10.7.1 and tried the terminal commant but this is what I got:

----------------------------------

mv: DisplayProductID-0: No such file or directory

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Besides that I've powered/unplugged both the TV and the iMac, unplugged the HDMI cable, replugged the HDMI, powered the TV and started it, plugged in the iMac and booted it. No result. Black screen and the Samsung never showed up again at the Pref / Monitor screen. Also, detect screen ofc doesn't work.

Any idea's/suggestions?

One detail to my previous post:

I got the HMDI cable running alongside a Ethernet cable through a tiny hole in the wall. Could that cause any problems? As beforhand I tested it with the cable crossing the room.

edit: nvm, pulled it across the room again and it didn't work either.

Tried this suggestion but sadly it did not work for me. Should I unplug everything as well as the hdmi cable from my mac mini (bought in June 2011) before powering down and up again?

This is actually quite a disgrace...