ATV3 causing TV to switch HDMI ports

At random times the TV switches to,the ATV HDMI port even when it's sleeping. Does anybody have a clue why?

sounds more like a tv issue as hdmi does not native support changing the input sources of tvs

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Can i use the HDMI port and the Mini displayport to HDMI adapter simultaneously to switch between two displays?

I just bought a new Mac Mini and was hoping that i can connect my TV via the HDMI port and also connect a 19" monitor via the Minidispaly port to HDMI adapter or the Mini DisplayPort to VGA Adapter. This way i can pick between having the screen mirrored to my tv, or having the screen displayed at my desk.
Is this possible?

Yes. Note the resolution via HDM is limited to
This model simultaneously supports 1920x1200 on an HDMI or a DVI display (using the included HDMI-to-DVI adapter) and2560x1600 on a Thunderbolt or Mini DisplayPort display or even a VGA display (with an optional Mini DisplayPort-to-VGA adapter, which is compatible with the Thunderbolt port).
HD 4000 Mini Video

How to connect TV with limited HDMI ports?

My Panasonic Plasma TV has 2 HDMI ports. I have been using HDMI 1 for a DVD Recorder and TV linked through HDMI 2. This gave me upscaled 1080p resolution on both.
I want to move TV to the Component ports to allow me to attach a Cinema system to the HDMI 2 port. This will give the neatest solution for the TV/DVD/Cinema remotes.
Is it possible to connect a Cinema system (5.1) to HDMI 2 as I understand that this will "disable" the Component Ports.
Prior to getting the Cinema System, as an experiment I have attached TV with component cables but the picture resolution is poor, I suspect it is only 480p. Is this to be expected?
I would like the Cinema sound for normal TV and for iTunes music etc. Is this set-up possible and how is it best to set it up.
If not how best can I meet my needs?
Regards
Beano

Winston Churchill wrote:
If you connect devices to the two HDMI ports you have on your tv it should not disable your component ports on the tv, although obviously you can only select one or the other. I don't see any reason that your component only uses 480p (since you are in the UK this would actually be 576p) unless the tv's component input is limited to this resolution. Have you tried changing the video output mode from the tv.
One other option would be to employ an HDMI switch, but be aware HDMI can be troublesome when ported through a switch, if you choose this route, ask here on this forum for anyone with experience of the switch you are considering before purchasing, not all work properly. I have heard the extrememac switch is OK, but I personally have no experience.
I thought that switching TV off for a while it would reset and set up on the newly found connections. However I have invoked the Video output scan from the  Remote unit. This went through all the options from 480p, 576p, 720p, 720HD and 1080p, which were all OK. There was one hiccup when the picture exceed the Plasma height but re scanning reset this.
The pictures are now in the highest quality and all the thumbnails are now visible.
I was experimenting with alternatives as I wish to avoid HDMI switches and also by using Panasonic Cinema system means all the remotes are compatible, if not exactly interchangeable.
I will now have to decide which units give me the best set-up.
Thanks again for the help.
Regards
Beano
Message was edited by: Beano43

My TV only has 1 HDMI port and it is connected to the cable box. What do I need to connect Apple TV?

What do I need to get in order for my Apple TV to work with my TV? My TV only has 1 HDMI port and this cable is plugged into my cable box. Thank you in advance

Thank you very much! I will return my splitter and pick up a switch.

How to connect Apple TV when I have run out of HDMI Ports?

I have a Sony Bravia TV with 3 HDMI Ports - in those I have connected:
- Sony Home Theater Surround Sound
- Playstation
- Sky Digital TV HD Box
Is there a way to connect Apple TV without disconnecting any of the above? (and without buying a new TV with 4 HDMI ports!)

lkrupp is correct, the only soution is to add what's called an HDMI switch to your setup. The HDMI switch normally has 2, 4, 6, or 8 HDMI inputs and one output. The output goes to your display. You then select which input you want to choose.In your case, you can do one of two things:
Connect all your sources to the HDMI switch. You then select sources via the HDMI switch and you no longer need to change HDMI inputs on your TV.
Disconnect one of the HDMI sources you have (let's say it's the Playstation) and plug both the Playstation and the APPLE TV into the switch. In this setup you need to change the input on both the TV and the HDMI switcher.
The simplest setup in your case is to buy a 4 or 8 port HDMI switch and put all your devices on the switch. If you are looking for inexpensive HDMI switches, you need to look at Monoprice. The stuff is all manufactured overseas and can be hit or miss but it's the cheapest that you'll find. If you feel like you need some guidance and help, then try www.hdtvsupply.com. They have a good selection and great support.

Mini-HDMI Port: Video OK, sound only works for iTunes

Let me start by saying, I'm pretty new to Mac so please be gentle with your answers...
I just got a new HD Samsung TV and have connected it to my Macbook Pro through the Mini-HDMI port. There are two HDMI inputs on my TV, DVI and ARC. I'm using DVI. The video displays perfectly but I'm having a little trouble with sound.
Once I went to system preferences and switched the audio output method to "SAMSUNG - HDMI" my iTunes music began playing through the TV speakers. I played a .wmv video from my hard drive; sound and audio all worked well. However, when I attempt to play anything through the Internet, Youtube, Hulu, Pandora, no sound... I still get video, and if I switch the Output source back to "Internal Speakers - Built-In" there's no problem. I don't know if it makes any difference, but I'm using Google Chrome as my Internet Browser.
I've double/triple checked the sites to make sure the local audio levels aren't being muted, and that doesn't seem to be the case. Is there a setting somewhere that references only Internet, or more specifically, Google Chrome audio Output levels?
PLEASE HELP...
Thanks

The "Front" channel isn't the same thing as the front panel. From the ALSA wiki:
"Front, Surround, Center, LFE (subwoofer) and Side (these are the names of the channels with Intel HD Audio, they may vary with different hardware)."
How many sounds cards do you have?
[dspider@arch ~]$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: NVidia [HDA NVidia], device 0: HDA Generic [HDA Generic]
Subdevices: 1/1
Subdevice #0: subdevice #0
[dspider@arch ~]$
What are the other HDMI devices? The video card?
And have you tried googling the problem?
http://ubuntuforums.org/showthread.php?t=1462288

I will be using a HDMI cable to connect an Apple TV box and a Comcast cable TV box to my TV. My TV has only one HDMI port.

I will be using a HDMI cable to connect an Apple TV box and a Comcast cable TV box to my TV. My TV has only one HDMI port.
To do this I will need a 2x1 HDMI splitter or a 2x1 HDMI auto switch (preferred).
?Is there any Apple TV HDMI port voltage?
When using a HDMI auto switch to connect two devices to a HDMI TV, the
Auto switch cable box only works for components that do not output continuous voltage over HDMI port when turned off.
Do you know of any other solutions? Componets? Actual expierances?
Full text below.
Cable : HDMI switches expand the number of available HDMI ports on a high definition television allowing connection of cable boxes, Blu-ray players, and game consoles. A side benefit is that cable clutter is also eliminated by running a single HDMI cable to your HDTV from a switch and relocating the HDMI ports to a concealed location. The problem with most HDMI switches is that you have to either get up to push a button, or hunt for the remote control, to switch sources. The true mark of any great switching component is an ability to perform its function and remain transparent in its operation. This automatic HDMI switch is a plug-and-play away from offering everything you are looking for in an HDMI switch. Select a single output from up to three devices for signal delivery to your HDTV. Smart operation provides complete control for connect-and-forget operation. Powering on a device gives it output priority over the other devices. By powering down the device in use, output priority is returned to the last powered on device. Note: Auto switch function only works for components that do not output continuous voltage over HDMI port when turned off.
Here is a typical HDMI 3-in 1-Out HDMI Auto Switch
http://www.google.com/products/catalog?q=hdmi+auto+splitter&rls=com.microsoft:en -us&oe=UTF-8&startIndex=&startPage=1&rlz=1I7GGLF_en&um=1&ie=UTF-8&tbm=shop&cid=1 0340892278237558532&sa=X&ei=fTPmTtOiHuXq0gGc3sHfBQ&ved=0CHsQ8wIwAA#
Thanks for any help. Sincerely,
HDMI auto switch?

Hi Erico,
I tried what you said again but without success. I even updated the driver so that that audio driver is the same as the graphics driver i.e.. NVIDIA but this has not helped either:
Do you have any other ideas?
Many many thanks,
Louise

I have 2 hdmi ports on my tv and want to set up my apple tv. Is there another way to do it?

I have 2 hdmi ports on my tv- both are being used. I want to connect my apple tv- is there another ways to connect?

Sounds like it's time for an HDMI switch-box (many in...one out). Yell if Google fails to supply decent hints.

I have one HDMI port on my television that is currently used for my hard drive/free view box. What kind of adaptor can I buy so I can have the hard drive and my apple tv device plugged into the same HDMI PORT?

I have one HDMI port on my television that is currently used for my hard drive/free view box. What kind of adaptor can I buy so I can have the hard drive and my apple tv device plugged into the same HDMI PORT? Is it a switch or a splitter? And where is it best to buy one? Thanks!

Welcome to the Apple Community.
You need an HDMI switch.

Blank Screen after switching HDMI

I've been using and enjoying ATV2 for at least a month now. My TV has only two HDMI ports so I share one of them for DVD and ATV2. Last night for the first time I switched back to DVD and this morning switched the cable back to ATV2 again and now I get a blank screen. I've read through the manual and tried the suggestions and they didn't help. The situation is this:
When I force a reset from the remote the ATV2 status light blinks rapidly after 6 seconds and when I release the buttons it blinks slowly for about 15 seconds and then stays on. The screen stays blank (except for Sony telling me which input is enabled, of course).
The light responds to any remote button with a single blink but the screen stays black.
I can press the Menu button over and over but the screen stays blank
I have checked the HDMI cable and removed it and reconnected it and it is definitely connected between the TV and ATV2 properly.
The TV is definitely turned on and set to the input for DVD/ATV2.
My iMac has iTunes open and there are no complaint messages on iTunes.
Does anyone have any ideas?

I'm humiliated to report that I had the cables switched btw TV and DVD/ATV2. How dumb.

Getting no sound from TV after connecting Macair via mini DP to HDMI port....pls help

I've tried connecting my 2011 Macair to my LED tv via mini DP to HDMI port. The video works fine but there is no sound. I tried opening network preferences and went to the sound section but it does not show my TV to be selected as an output option. Please help!!!!!!

Did you try on another device, like a computer monitor? To verify the problem is not with the adapter or cable.
Off course you switched on the external screen using WinKey+P?

I have connected my macbook pro to my tv via MDP to HDMI port cable, all that is showing up is the basic desktop image without any icons, what do i do to correct this

i have connected my macbook pro to my tv via MDP to HDMI port cable, all that is showing up is the basic desktop image without any icons, what do i do to correct this

Your MBP is running in "extended desktop" mode, where the two screens together make one larger area to display windows. You can drag one or more windows from the primary (internal) screen to the secondary (TV) screen. By default, the secondary screen is off to the right of the primary screen.
If you would prefer the two screens show the same image, you want to switch to "mirroring" mode. You will have to pick a single resolution for both screens, which may look poor on one or the other.
Both the relative positions of the two screens in extended desktop mode and the switch to mirroring mode can be set in System Preferences > Displays > Arrangement.

46SL412U Sudden No Video Signal for all HDMI Ports

My daughters and I were playing the Wii U tonight on our Toshiba 46SL412U LED TV when suddenly the picture when black and the No Video Signal message came up. I changed out the HDMI cable thinking the cable went bad, but still no picture. I power cycled the TV, still nothing. I am also not getting any picture with any of my other devices that are hooked up via HDMI port (BluRay player, Chromecast). Oddly, the REGZA-LINK still recognized that the BluRay and Chromecast are plugged in and switches to the correct input when I power either of them on, but i'm still getting the No Video Signal message.
Is there a setting I've missed that suddenly changed, or did all of my HDMI inputs suddenly go bad? What can I do to fix this issue?

To check the Graphics card's funtionality you may go to BIOS menu and see if is it listed or not; if yes, then it's working, and you may have to check the video/HDMI cables.
Try to boot the PC without connecting any device other than monitor, power cable, mouse and keyboard.
To check the warranty, you may use the below link:
http://www11.itrc.hp.com/service/ewarranty/warrantyInput.do?admit=109447626+1275645640303+28353475
If you have any doubt regarding the warranty, contact HP support.

HDMI ports on Receiver full for Apple TV.

I run my TV, PVR, BluRay, etc through a receiver. All of my HDMI ports are full. Would it work if I plug a HDMI cable from my Apple TV to my TV and a Optical digital audio cable from my Apple TV to my receiver?

Yes that should work, you also might consider an HDMI switch.

One HDMI port and Apple TV

OK, I thought this would be simple but it's proving not to be. Anyway, I want to connect Apple TV to my TV that has just one HDMI port that is being used to transmit to the digital cable box. I did get a 5-port HDMI switcher, but I'm perplexed as to what goes where. Does anyone have any directions on this setup? Much thanks in advance.

The ATV and cable box connect to the switcher.
An HDMI cable from the output on the switcher goes to the tv.

ATV3 causing TV to switch HDMI ports

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