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

learn more… | top users | synonyms

0
votes
0answers
11 views

USB devices unrecognized; stuck in connection purgatory

I have had a frequent issue with the USB ports on my MBP (Retina 13" Early 2015; OSX 10.11.5). This happens a few times per week, and reappeared today. I was working with a USB device (Arduino) with ...
0
votes
1answer
17 views

Is it possible to output different audio to HDMI and built-in speaker simultaneously?

After I connected my Macbook Pro to an HDTV with HDMI cord, I can choose to output audio to either the HDMI port or the built-in speaker. And I know that it it possible to create a "congregate" audio ...
0
votes
0answers
20 views

How to render external display in native resolution?

I've a UHD display connected to MAC via HDMI. But the external display is not rendering in native resolution. There does not appear to be an option in preferences to set to native resolution of ...
1
vote
1answer
31 views

Sound output device disappeared after upgrade

I have my Samsung TV connected to my Macbook Air via HDMI/thunderbolt. Everything was working just fine until I upgraded to Yosemite (10.10.5). At the moment, in the "sound" configuration in the "...
0
votes
0answers
36 views

Early 2015 Retina Macbook Pro not recognizing/working with some external displays

I have an Early 2015 Retina Macbook Pro 2.7 GHz i5, and it does not work with certain displays. I first tested it with a display(call it display A) Mini Display Port to DVI cable which did not work. ...
1
vote
1answer
30 views

Running 3 External monitors from a Macbook Pro Retina 13" Mid 2014

I currently own a Macbook pro (Retina 13",mid 2014) 2.6GHz Intel Core i5 8GB 1600 Mhz DDR3 Intel Iris 1536 mb 3 x 22" Samsung Monitors. 2 of them running through Thunderbolt to DVI-D adapter. The 3 ...
0
votes
0answers
23 views

HDMI flickering upon ac connection

I have purchased an mbp 13" early 2015 2 weeks ago. Everything seems to be ok but 1 issue: hdmi is behaving very weird. Got 2 external monitors, one connected using a dvi-to-hdmi cable, the other ...
0
votes
1answer
38 views

Connecting Macbook Air to Sony HDTV via HDMI

I own an apple Macbook Air early 2015 version, I am not able to connect it to my Sony HDTV through mini DP to HDMI converter. Can somebody Help?
1
vote
0answers
33 views

Why does my Apple TV 4 often turn my receiver off on startup?

I have an Apple TV connected via HDMI to a Pioneer VSX-S510 which in turn is connected to my Sony Bravia KDL-32W4000 TV. I have everything set to power on automatically, and I can control the ...
0
votes
0answers
33 views

4K Scaling Issues on Display Port but HDMI Working Fine?

I have a 2012 Macbook Pro Retina with an external Samsung 4K monitor. When I hook the monitor up via Display Port to Thunderbolt I get a few resolution options. However no matter which one I pick its ...
0
votes
0answers
63 views

Plugging in an external HDMI display makes the computer sluggish

2015 2.7 GHz Intel Core i5, 8gb ram MBP and it usually feels snappy but when I plug in my external Samsung HDMI display it slows down considerably. Animations are janky, delays in editing text, and ...
0
votes
2answers
102 views

HDMI to DisplayPort Not Working

I have a Macbook Pro and a QHD BenQ monitor here. Should it be supported to connect these two devices using a HDMI to DisplayPort cable (So HDMI on Macbook DisplayPort on monitor)? For me it just ...
0
votes
0answers
39 views

How to reach full resolution potential with MacBook Pro 2012?

I have a MacBook Pro (13-inch, Mid 2012) running OS X El Capitan version 10.11.4. I am attempting to use an external display with my Dell U2715Q (has 4k capabilities). I purchased an AmazonBasics ...
0
votes
0answers
40 views

Macbook air 2015 + elgato thunderbolt 2 doc to use two external displays

I have a 2015 Macbook Air running Yosemite v10.10.5. I recently purchased a Elgato thunderbolt 2 dock and would like to connect two external monitors. One using thunderbolt-to-DVI and the other using ...
0
votes
1answer
33 views

Mac — HDMI to USB/Thunderbolt

I know there are small USB boxes which are able to pass through image from HDMI (and record it) to computer. Is there something similar which would enable me to see stuff from HDMI on my Mac? Why: I ...
1
vote
0answers
59 views

HDMI not working anymore on MacBook Pro

HDMI has been working fine for as long as I remember. However, today when trying to connect it to my Sony TV, the HDMI wasn't working. It's not the cable or TV (tested different laptops/cables) so it ...
0
votes
1answer
52 views

HDMI Input onto a MacBook Air

I have a Canon DSLR camera and I am trying to get the output from the camera onto a MacBook Air so I can then AirPlay the MacBook to a different Room. The other room is on the other side of a school ...
0
votes
0answers
37 views

Mac mini 2014? Connecting to a 2nd monitor

I currently have a mac mini with a thunderbolt connecting my vga monitor to this. I now want to connect a second monitor but my problem is this....I only have a hdmi female in the mac mini and the ...
0
votes
0answers
25 views

How to display non-DV video signal with Firewire input?

Is there any way to get the video signal output from a Displayport (mDP) or Thunderbolt (1 / 2) socket into a Firewire (FW800, IEEE 1394) input? What cables, adapters and drivers or other software ...
1
vote
1answer
49 views

Can I use a USB to HDMI converter to set up 2 external monitors on my 2015 Macbook Air?

Can the Macbook Air (2015 model) power a second external monitor via it's USB port (using a USB to HDMI cable)? I would also need to connect an external keyboard and mouse, so I plan on getting a USB ...
1
vote
0answers
84 views

External monitor cuts out on MacBook with Multiport Adapter

I have a newer MacBook with only a USB-C port. I use an Apple USB-C Digital AV Multiport Adapter, and the HDMI output has worked in the past. When hooked to my new ASUS monitor with an HDMI cable, ...
1
vote
2answers
331 views

Can one buy an Ethernet and HDMI Thunderbolt adapter?

I need both of them and I am wondering if it is possible to buy them together or if I have to get two separate items? Also I am seeing a lot of third party Thunderbolt>HDMI adapters for cheap and ...
0
votes
0answers
19 views

Some Applications Muted on Mac when External Displays Connected

For some reason, whenever I plug in my external displays to my MacBook Pro (Retina, 15-inch, Mid 2014), certain applications seem to mute themselves. My audio output is set on Internal Speakers. One ...
1
vote
1answer
36 views

Using an iPad to view video from a set top box / DVD player over HDMI?

From time to time I need to test set top boxes / DVD players, currently I carry around a 20" HDMI monitor to test them on, but is it possible to use an iPad as an display with an HDMI input adaptor (...
0
votes
0answers
155 views

Resolution problem on external display with Thunderbolt->HDMI adapter

Let me explain problem in quick bullets: What I want: I would like to use ultra wide external display with 3440x1440@50hz resolution with my MacBook Pro (Retina, Mid 2012). I would like to use my ...
1
vote
0answers
93 views

How do I record HDMI input to a file with my Mac

So I have an HDMI signal and an HDMI to USB adapter. I need to record this HDMI signal to a video file. Zero budget. Will plugging this into my Mac work as a video input? If not, how else do I do this?...
2
votes
2answers
111 views

External Monitor not working on MacBook Pro 2015 with HDMI-VGA converter

I have an HDMI to VGA connector and a Samsung LED screen. The screen is fine, the VGA cable is fine, the connector is fine (tried with different laptops running Ubuntu and Windows). The Problem: I'...
0
votes
1answer
76 views

2 External monitors on 21,5 iMac Late 2009?

So I wonder if I can use 2 external monitors on my Late 2009 21,5 iMac? I currently use 1 external monitor and it works great but I now want to sell it and use 2 external monitors but there is only ...
3
votes
2answers
29 views

Can MBP 13 mid 2012 send audio and video through thunderbolt to HDMI?

I own this model: https://support.apple.com/kb/sp649?locale=en_US And I have an adapter thunderbolt to HDMI that works wonderfully with video, but no audio. Does someone has any advice on a product ...
0
votes
1answer
80 views

macbook pro to external monitor 1920px via hdmi?

I just got macbook pro 13inch retina and the default resolution is 1280px width, and maximum is 1600px. If I connect this laptop to an external monitor via HDMI which has 1920px resolution, will the ...
0
votes
0answers
47 views

MacBook Pro Connected to External Monitor issue

I connect my Macbook to an external LCD screen, using their VGA and HDMI ports. When I try: The LCD is black with no signal The MacBook flickers LCD screen, VGA-HDMI cable checked and work fine. ...
0
votes
0answers
96 views

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 ...
0
votes
0answers
32 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 ...
1
vote
1answer
50 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?
0
votes
1answer
131 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 ...
0
votes
1answer
132 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 ...
0
votes
1answer
230 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, ...
1
vote
0answers
132 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 ...
0
votes
1answer
253 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.
1
vote
0answers
149 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 LSD-acid-...
0
votes
0answers
55 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 ...
1
vote
1answer
1k 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 ...
0
votes
1answer
431 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 "...
0
votes
1answer
75 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 ...
1
vote
1answer
1k 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 ...
0
votes
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 ...
0
votes
0answers
241 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 ...
0
votes
0answers
238 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 ...
1
vote
0answers
54 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 ...
1
vote
0answers
143 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 ...