Thunderbolt to HDMI not Detecting LG TV

My imac is not detecting Thunderbolt to HDMI not Detecting LG TV
Only did detect once and now can get it back?? Mac Version 10.7.5

Try it on another HDMI display see if you have the same issue.

Similar Messages

Thunderbolt to hdmi: mac detects the tv but the tv get no signal

Hey,
I have Macbook pro 15 with Lion 10.7.4 on it.
Lately i'm having problems to connect my computer to the TV,
I have connected it with the Thunderbolt to HDMI connector, It used to work.
Now i can see the TV on the System Preferences -> Displays, so it detects the TV, but there is no output, it shows nothing,
The Tv shows that there is no signal...
Many thanks for your help
Eliran.

I don't have a Sony, so I don't know exactly where the setting is hidden in your case. What you want to do is let the Sony know that the HDMI input is connected to a computer, not a BlueRay or cable box or DVR. This should fix it. My TV allows you to select a name for each HDMI input. Once you select "PC", the HDMI input behaves in a slightly different way.
Could be a HDCP handshake problem, who knows....

HT5019 thunderbolt to hdmi not responding

the thunderbolt for HDMI is not working. any suggestions.
Mike

Try it on another HDMI display see if you have the same issue.

Thunderbolt to hdmi not working after 10.10.2 update?

After the new 10.10.2 yosemite update my thunderbolt to hdmi will not connect to my tv. Tried pretty much everything but nothing will fix this.

Hello maddawgdo,
Welcome to Apple Support Communities.
This article provides a lot of great information and troubleshooting tips that should help you resolve the no video issue with the TV connected to your MacBook Air.
Apple computers: Troubleshooting issues with video on internal or external displays - Apple Support
Cheers,
-Jason

HT2998 connecting MacMini to display with after market thunderbolt-to -HDMI, not working

just purchased the mac mini, purchased after market thunderbolt to HDMI cable. connected from mini to display monitor. nothing comes up, display reads no VGA signal.

Does the monitor have a way to change input source?
I had this same issue when I first tried with my MBP, I had to do an SMC reset to get it to work.
Resetting the System Management Controller (SMC) on your Mac - Apple Support

2nd apple thunderbolt display in not detected by Windows 8.1

Installed Windows 8.1 on a late 2013 Mac Pro. Have two thunderbolt displays. The 2nd display is not being detected by Windows. There is only one display listed in device manager. One display works fine, the river listed for it is Generic PNP display.
Any ideas on getting 2nd display to work in Windows 8.1?
Thanks

OMG, I was just about to buy a new wireless card because I have the same problem.
Some weeks ago my wireless adapter disappeared, the card disappeared altogether even from Device manager, after I installed a new bluetooth driver and after I was connecting to my phone 3G via USB cable.
But then it came back after I left the laptop shut down and unplugged for a whole night. It worked for a few hours and after closing the lid and opening it again wireless adapter was gone again, never to come back.
I tried changing drivers, holding the power button for 20 sec to hard reset the laptop, fresh install of Windows, load BIOS defaults, and even installing Windows 10 in VHD (dual boot) and see if it will reappear there.
Always the same - the wireless adapter doesn't exist any more.
However, buetooth has been working without problems, which I find strange.
I read online about similar situations, and all answers point that the wireless card stopped working and needs to be replaced.
But @Papelinas - you say you even bought and installed a new wireless card and STILL have the same problem???
I can't believe that something in motherboard got damaged and that only wifi doesn't work...
I've had my Y2P for 6 months, and I don't really have time to send the laptop for repair for some time, I'm using it...
I guess I'll still try to buy a new card, and just hope the wireless adapter will reappear...

Thunderbolt to HDMI NOT WORKING

Hiya,
Can't get video or audio on an LG TV. MAC PRO DETECTS TV, lists it's model number in settings, but doesn't work.
We bought lead from apple store.
Thanks for any suggestions.....

There is no iMac Model 3.1. There is a MacPro model 3.1, is this what you are referring to?. See the link below to help clarify:
http://support.apple.com/kb/HT1758

HT3382 27" imac to external display vga or hdmi not detecting

I have a mid 2010 27" imac, with i3 processor, 16 GB ram, 1 TB hdd. Have both a mini dp to vga and mini dp to hdmi adapters. samsung 23" monitor with both hdmi and vga inputs. hdmi adapter never worked, the vga adapter works in a highly intermittant fashion. Did a fresh install of mountain lion, no difference. Very frustrating. Have also reset pram and smc. Anyone have any thoughts?

I have a mid 2010 27" imac, with i3 processor, 16 GB ram, 1 TB hdd. Have both a mini dp to vga and mini dp to hdmi adapters. samsung 23" monitor with both hdmi and vga inputs. hdmi adapter never worked, the vga adapter works in a highly intermittant fashion. Did a fresh install of mountain lion, no difference. Very frustrating. Have also reset pram and smc. Anyone have any thoughts?

Thunderbolt to hdmi not working after mavericks upgrade

since upgrading macbook pro late 2011 doesn't recognise / see the second display, is there a fix for this or am i missing something?

Hello maddawgdo,
Welcome to Apple Support Communities.
This article provides a lot of great information and troubleshooting tips that should help you resolve the no video issue with the TV connected to your MacBook Air.
Apple computers: Troubleshooting issues with video on internal or external displays - Apple Support
Cheers,
-Jason

Thunderbolt to HDMI does not detect TV on Yosemite

I am having the same problem as a lot of people with Yosemite and and connecting to a TV/external monitor via thunderbolt to HDMI but have found a sort of a solution or at least a bit more info that might lead to someone having a eureka moment. I have a Mac Book Pro, my partner a Mac Book Air. I bought a thunderbolt to HDMI cable from eBay so my partner could plug her Air into the TV. When the cable arrived, it would not detect our LG TV from either computer. So a bit of playing around and this is what I found.
I plugged the cable from my MBP direct to the HDMI port on the TV and nothing, no signal detected.
I also tried from the MBP to the HDMI port on the amplifier of the surround sound system and again nothing.
However, if I plug the cable from my MBP directly to the TV HDMI and select that corresponding HDMI port on the TV initially still nothing. But if I then plug a normal hdmi-to-hdmi cable from my amplifier to the Mac Pro's HDMI port, suddenly the thunderbolt cable works and the Display Preferences sees the LGTV. I checked that the correct hdmi port was selected on the TV for the direct connection and I could even turn off my amplifier to make sure that I was not seeing the wrong signal and it still worked as long as the hdmi-to-hdmi was still connected at both ends. However, if I then unplug the HDMI cable from MBP or the amp, the thunderbolt port stops working as well and the TV displays "no signal detected".
It seems that there needs to be either a base signal or an earthing through the MacBook Pro's HDMI port for it to switch into an external monitor mode that will detect a thunderbolt to HDMI connection. This is sort of fine for my MBP as I had nothing working before but it seems a bit pointless having the HDMI cable plugged in as well as I might as well just use this in the first place. However, as my partner's Air only has a thunderbolt port and no HDMI port it still doesn't work with her MAC.
Hopefully someone will see this and have a brainwave.

A bit more playing around and I found that as above with the thunderbolt to HDMI plugged into the TV and a hdmi-to-hdmi plugged into the amp, with the amp turned off, I could get the thunderbolt to HDMI working. When I then went to the Display in System Preferences and the Arrangement pane, it was showing three displays, one for the MBP screen, one for the LG TV and one for the amp HDMI port (even though it was turned off). When I then unplugged the HDMI cable from the MBP the arrangement screen was no longer available as it only recognised the MBP screen. This was the same regardless of whether I was mirroring the displayed or had them as three separate displays.

Thunderbolt to HDMI adapter not working

I just purchased a 13 inch macbook air and when I use my thunderbolt to hdmi adapter my Samsung monitor along with my other displays do not recognize my mac. How can I get my monitors/displays to recognize my device? Do I need software to get this working?
I am using an amazon high speed hdmi cable with ethernet. Will that effect my connection?

I finally learned how to get "Detect Displays" to show up. You have to press the Option key while in the Display pane.
Unfotrtunately this does not work. No other displays are detected. Yes, the TV is on and plugged in to my computer.

Though I have connected my receiver using thunderbolt cable/hdmi it does not emit sound, but i can see the display

My imac does not detect the thunderbolt. so cannot select external speakers though I have connected the mac using thunderbolt to hdmi. cannot receive sound but video is seen.

I have one thunderbolt port and one mini display port.
No Mac has both Thunderbolt and Mini DisplayPort. They are both Thunderbolt. A Mini Disp;layPort cable or adapter will work in a Mini DisplayPort or Thunderbolt port.
A Mini DisplayPort to HDMI cable or adapter can handle both audio and video, but some older ones are video only.
You may have a broken audio wire in your cable. Try a new cable or Mini DisplayPort to HDMI adapter. Make sure it says it will handle both audio and video.

Mavericks does not detect my HD tv via thunderbolt

I have a 15" Macbook Pro (mid 2012) and when I plug in my thunderbolt to hdmi adapter it does not detect it at all. Also I am running Mavericks on this Macbook. Please Help

In system preferences/displays, click detect displays, also see the following:
http://support.apple.com/kb/HT5219
http://support.apple.com/kb/PH13801

Macbook Air hdmi display not detected

Hi, my 2011 Macbook is not detecting my hdmi display - the screen flashes blue briefly but no display is detected in system preferences or anywhere else.
Any ideas?
+I am using a mini display port to hdmi adapter with the thunderbolt output and I've tried rebooting with display plugged in and my osx is 10.7.5 Lion.
Any help appreciated

Actually I fixed it in the end by getting a new cable, it turned out that for whatever reason my cable was not up to the job.\
I found that a cheap £5 one piece thunderbolt male to hdmi male cable off ebay did the job well and it was my two piece - thunderbolt male to hdmi female attached to a standard HDMI to HDMI cable which caused the problem.
Seems like HDMI can be quite fussy and either it works or it does nothing, no in between.
So my fancy mac now works great with my cheapo alba hdmi tv i paid £25 for and carries both sound and video!
(I don't think I'll go back to windows if I can help it, not after using a mac. Once you've had a mac you realise what a pain in the a*s windows is .. I hardly ever feel like punching my mac )

Does Apple make a Thunderbolt to HDMI adapter? Not an off brand one, a legitimate Apple product.

I have a new Mac Mini and I want to connect a second monitor through the Thunderbolt port. I have not been able to find a Thunderbolt to HDMI adapter that is made by Apple. I know there are some adapters made by other companies but I would prefer to have an adapter made by Apple. So does anyone know if Apple does in fact make an adapter that is Thunderbolt to HDMI???

I use this one - it has much better reviews and you can buy five of them for what Apple charges for the Moshi:
Mini DisplayPort | Thunderbolt® to HDMI® Adapter w/ Audio Support

Thunderbolt to HDMI not Detecting LG TV

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