HDMI (High-Definition Multimedia Interface) is a widely used interface for transmitting audio and video signals between devices and displays.

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How not to miss the elimination of Optical Audio Output from 3rd to 4th gen Apple TV

I speculate that the audio signal at the Optical Audio Out of the 3rd generation Apple TV is always the same audio signal within the HDMI output. I further speculate that that's the reason behind ...
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1answer
1k views

EDID loss on HDMI switching

I have a LCD tv hooked up to an HDMI switcher flipping between a Mac Mini (2006 snow leopard using a DVI - HDMI cable), cable tv and dvd player. Trouble is, whenever the switch goes away from mac ...
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2answers
5k views

Driving a 4K display at 60Hz with rMBP

I've been Googling so much my eyes hurt. I have a 2014 rMBP. I want to use it with a 4K display or UHD TV at 60Hz that's at least 30" big. From my research, this means either using something with a ...
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0answers
14 views

3xHDMI out of a single Thunderbolt port - 2015 MBP

I'm planning on purchasing 3 HDMI monitors to use as a workstation for my MBP. For the sake of ease and convenience, instead of using the native HDMI + 2 mini DP to HDMI adapters, is there any way to ...
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1answer
2k views

Macbook Pro detects the screen, but external screen stays black (mini dp to hdmi)

I am trying to connect my MacBook Pro (OSX 10.9.3, 2.4 GHz Intel Core i5, 8GB DDR3) to Panasonic Viera TH55AS670D LED TV through Mini DP to HDMI connector. When I connect the wire my laptop screen ...
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4answers
22k views

Volume Keys not working with HDMI audio on mac OSX Lion?

I have a mac mini 2011 with OSX Lion. And I have connected my monitor (with integrated speakers) through hdmi port. The sound is working fine, but the volume keys on the keyboard don't work. When I ...
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0answers
12 views

Is it fundamentally impossible to have passive thunderbolt to dual-link-DVI or HDMI adapter supporting 2560x1440?

Is it fundamentally impossible to have a passive (NOT the expensive USB-powered active ones) thunderbolt/mini-displayport to dual-link-DVI or HDMI adapter that can support 2560x1440 external monitor?
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1answer
101 views

What non-Apple external monitors are currently recognized as 2 pixels per point?

I was thinking about getting a Dell 4k or perhaps a 2560x1440 display, but then I realized that not all non-Apple displays are recognized as 2 pixels per point even though the ppi is high enough. Is ...
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3answers
3k views

2013 Macbook Air not showing 1440p Option on External Display

I have a mid 2013 Macbook Air with the Intel HD 5000 graphics chip. I recently purchased a 27" Acer K272HULbmiidp 1440p (2560x1440) monitor that just arrived today. I connected it via a mini ...
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2answers
898 views

Connecting 2015 15" Retina MacBook Pro to Dell U2715H?

What would be the 'best' way to connect the 2015 Retina MacBook Pro to a Dell U2715H monitor? If I wanted to use the monitors USB 3.0 ports and also output sound to a Dell soundbar, how many cables ...
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1answer
49 views

MacBook Pro Retina 15 connecting a 4k monitor

Just got a new MacBook Pro 15 Retina (mid 15). I have an Acer 4k-monitor which I'm looking to connect to the MacBook but I can't figure out how. The Apple website and FAQ's weren't helpful. I want ...
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2answers
149 views

Should I upgrade my Mid 2009 MBP 15 2.8 to MBPr 13?

I code on eclipse and XCode on my Mid 2009 MBP 15 inch 2.8 ghz works very good. (very good = acceptable compile times and almost no occasional freezes. You don't get because of the slowness ...
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1answer
125 views

MacBook Pro Screen Flickering when using HDMI to VGA adapter to connect to external monitor

My MacBook Pro 2014 keeps flickering when I plug in a HDMI to VGA converter to it. I am using HDMI to plug in the HDMI to VGA converter (which is plugged in to my monitor). The screen is just black ...
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1answer
186 views

Is there a way to mirror to HDMI display on FileVault login screen?

I have a MacBook Pro Retina & Mavericks, with FileVault 2 enabled. I also mirror to an HDMI display, but it doesn't show anything on FileVault 2 login. This is an issue, because I'd like to get a ...
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1answer
19 views

System volume locked on Mac mini when using HDMI audio

I just connected my Mac mini (Late 2012) to my TV using HDMI. Now, all works good, except that I cannot set system volume on the HDMI link. That is, if I switch from built-in speaker to HDMI audio, ...
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3answers
4k views

Rotate iPad Video out when connected to a monitor

I have a HDMI -> iPad adapter that I'm using to connect my iPad to a monitor to do a demo at a tradeshow. The monitor I'm using is placed vertically, so I need to rotate the video out from the iPad to ...
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0answers
942 views

HDMI & VGA issues with MacBook Pro Retina & Acer Monitor

I'm having a very strange issue. I inherited an Acer monitor from a friend that is full HD, 1080p. Good monitor overall. When connecting ONLY an HDMI cable from my Mac to the monitor, I get no signal. ...
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1answer
1k views

Where can I purchase Female Thunderbolt to HDMI cable?

I have a Apple Thunderbolt Display 27 which I want to use in Windows machine with HDMI port only. So I basically need to cable which will have female thunderbolt port in one side and male HDMI port in ...
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1answer
3k views

30hz vs 60hz 4K output

I am currently using a MacBook Pro 13" 2015 model with a Samsung U28D590 UHD display. Currently I am using the HDMI port of the monitor with a mini-displayport to HDMI adapter and receive 4K 30hz ...
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1answer
4k views

HDMI to VGA converter with Mac mini

I have bought a Mac mini today. My monitor is only VGA. After connecting HDMI to VGA converter my monitor is not getting any signal. How can I fix it? Please help me. I am so frustrated.
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4answers
5k views

MacBook Air 2012 Mini DisplayPort not working with HDTV

I'm trying to connect my 2012 11" MacBook Air to my Panasonic p60st60 1080p plasma HDTV using a new Monoprice Mini DisplayPort to HDMI adapter & 6' HDMI cable. My TV displays a "No signal" ...
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0answers
39 views

My iMac detects a samsung external monitor, but nothing comes up on the display

I've got a late 2013 iMac running OS X El Capitan and am trying to get a second screen for work. Its a Samsung LED Syncmaster SA350 Series (Plug & Play). When I plug it in, nothing but a black ...
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1answer
102 views

Can I use my MacBook Pro (Retina, 13-inch, Early 2015) with 4k (3840x2160) LG 40" ub800t TV @ 60Hz refresh rate?

As the TV only has HDMI 2.0 ports, I am considering to buy a thunderbolt to HDMI 2.0 adapter. but I want to know that whether this combination will give me the 60Hz refresh rate at 4k resolution.
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3answers
41k views

Troubleshooting HDMI connection between MBP and Sony Bravia TV

I'm trying to connect my MacBook Pro (late 2011) running Mavericks to my Sony Bravia television like so: MBP thunderbolt port -> Mini DisplayPort cable -> HDMI cable -> TV HDMI 1 port. However, I'm ...
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2answers
269 views

HDMI to VGA with USB-C VGA adaptor on 2015 Retina Macbook

I have one of the new Macbooks on the way and have also bought the Apple USB-C Digital AV Multiport Adapter with HDMI to go with it. If I want to get VGA with this adaptor, rather than buying the ...
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2answers
1k views

Sharing screens/monitor between Asus Laptop and iMac

I have the following equipment: An iMac 27" (mid-2011 windows 8 BOOTCAMP with 2 thunderbolt port and 1 miniDisplayPort) An ASUS ROG laptop (with 1x VGA port/Mini D-sub 15-pin for external monitor / ...
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5answers
10k views

Connect 2 external Monitors with Belkin's Thunderbolt 2 Express Dock HD

I need a little help here, I have attached my MacBook Air Mid 2013, to an Belkin Thunderbolt 2 Express Dock HD. On the product page it says that one can connect two monitors. The only condition is ...
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1answer
3k views

HDMI output problem with late-2013 13 inch macbook pro with retina

I just bought late-2013 13-inch MacBook Pro with retina. I want to connect it to my Samsung 32'' TV at home and DELL u2412m monitor at work. None of these connection is working right now. MacOS X ...
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0answers
32 views

Switching HDMI input to Apple TV causes crackling noise and strange video

When I switch HDMI inputs on my TV from Tivo or Blu-ray to a sleeping Apple TV (4th generation, with apps), I get nasty crackling electronic interference noise on the sound system plus weird ...
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1answer
3k views

How do I reset/clear my external display settings in 10.9?

I messed up the settings for the clamshell display mode on my MacBook Pro. I can't get my external display to work when I close my laptop. I can get all other modes working (standard mirroring and ...
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1answer
3k views

Mac mini (Late 2014) and 4K TVs

Based on Apple's documentation, my Mac mini (Late 2014, mid-range model with Intel Iris) should be able to support 4K video through HDMI. I've plugged in my Seiki 39" 4K TV (SE39UY04), but when the ...
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1answer
279 views

Stopping Dell P2715Q monitor flickers with MacBook Retina 12" (2015)

I have recently purchased both a Dell 4K display (P2715Q) and a new Macbook (Retina, 12", 2015). According to Apple's website, the MacBook should be capable of driving the display at full resolution ...
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1answer
1k views

Can I use dual 4k Dell P2815Q monitors on the Retina MacBook Pro (late 2013) with Yosemite at full resolution?

Will this monitor plug-and-play with Yosemite on this MacBook model without having to install Xcode and mess around with creating custom settings? Can I have two of these plugged into this MacBook ...
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0answers
24 views

Can a faulty HDMI cable damage macbook

I tried to connect my rMBP mid-2014 to a TV through an HDMI cable. I first plugged the cable to the TV. when plugging the other end of the cable to the HDMI port on the macbook, I heard some crackling ...
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2answers
33k views

How to redirect MacBook Pro audio to my TV?

I just connected my MacBook Pro 2013 to my TV using HDMI. The visuals are working, but the TV does not get the audio from my MacBook. How can I redirect the audio from my MacBook to my TV?
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1answer
24 views

MBA & VGA monitor, using strange reduction Thunderbolt-HDMI-DVI-VGA

I have latest Macbook Air and I want try to use VGA monitor. I don't have MiniDisplayPort to VGA reduction, but this: I know that DVI-VGA worked fine on with my old PC, so I don't understand, why ...
0
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1answer
105 views

Connect MacBook Pro 2015 to iMac 2015 with HDMI?

I forgot to bring my "Thunderbolt to Thunderbolt" cable to connect my MacBook Pro to my iMac screen. I do not wish to spend again all that money to go buy one now. The only thing I have here is a ...
3
votes
1answer
3k views

How to fix unreliable 4K Seiki display with MacBook Retina Pro?

I'm trying to use the Seiki 4k display model SE39UY04 with a Retina, 15-inch, Early 2013 MacBook Pro at 3840x2160 @ 30 Hz running Mavericks. I've gotten it to work twice now on two different days, ...
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1answer
251 views

HDMI port on MBPr 13" (late 2013 11,1) stopped working after 10.10.4 upgrade

I used to connect my MBPr HDMI port to my office ASUS MX299 display every morning for like a year, and everything was just fine. Recently I have updated to 10.10.4, with external display detached. ...
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0answers
10 views

Everything chopping after I power off additional monitor or TV

I'm using iMac mid 2014 with additional monitor (one thunderbolt to HDMI) and connected TV (Panasonic Smart TV on other thunderbolt to HDMI). Everything is ok and working perfectly, but I'm using TV ...
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0answers
111 views

Use an iPhone as cabled webcam / capture camera stream from hdmi out?

I am wondering if there is a way to use an iPhone as a usb webcam. I saw solutions for wifi and friends but none of them seems to work for a cabled connection. Alternatively, I know that it is ...
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0answers
156 views

No sound on external monitor using El Capitan

Although this question has been asked and answered many times on this for earlier OSXs, I have not found a solution here or elsewhere that works with El Capitan. The problem is: No audio when playing ...
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3answers
12k views

Force external display refresh rate

I have a 27" screen which is connected to my mid-2012 MacBook Pro retina through a HDMI/DVI-D (HDMI on the MacBook Pro, DVI-D on the screen). Before I was using a adapter DisplayPort+USB/DVI-D and I ...
0
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0answers
46 views

Force Mac OS X to Register USB devices

I'm using an HDMI CEC adapter connected via USB to my Mac Mini (Machine model Macmini6,2). Often when the Mini is rebooted it fails to register the adapter. Unplugging and replugging the USB cable to ...
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0answers
24 views

How do I get all three monitors to work with 2015 Mac mini?

I have a 2015 Mac mini with two monitors hooked up out TB-VGA adapters. A HP and a Compaq. Today I added (or tried to add) a samsung 24" with the HDMI. Since adding the samsung, I can only get my ...
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0answers
65 views

How can a Mac mini drive 3440 pixels wide display instead of 1920?

I've bought a new 21:9 IPS screen with a native resolution of 3440x1440px. The display has only two inputs: 1x DisplayPort which is connected to a workstation and 1x HDMI port which should go to my ...
5
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3answers
9k views

Can a MacBook Air support 2560x1600 output via HDMI using a Mini DisplayPort/Thunderbolt to HMDI adaptor?

The HDMI 1.3 spec can carry signals with resolutions as high as 2560 x 1600 pixels. Is it possible to output this high a resolution signal from a MacBook Air using a Mini DisplayPort/Thunderbolt to ...
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1answer
269 views

Display connected via DisplayPort disconnects, reconnects when resuming, resizing windows on display

I have a new LG 29UM55 29" Ultrawide monitor, resolution of 2560 x 1080, connected via DisplayPort to my 2012 MacBook Air 13" via a Cable Matters Mini DisplayPort to DisplayPort cable that reportedly ...
2
votes
4answers
3k views

Keep MacBook Pro awake in a clamshell mode + HDMI switcher setup

I'm running a setup with the latest Retina MacBook Pro, a Windows desktop and a single external monitor. Both machines are outputting display to a HDMI switcher, which connects to the monitor. I can ...
3
votes
5answers
14k views

Desktop icons have disappeared after using HDMI cable (Yosemite)

I had a strange issue recently where I had to reset PRAM after using an HDMI cable with my MBP (it had a blank screen on boot). I feel like this is again related to the HDMI cable. After using it, ...