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Questions tagged [hdmi]

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

2
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1answer
12 views

Overriding the default resolution on external monitor

I have an iMac 5K (mid-2017) and a USB-C to HDMI adapter. I used to have a standard 24" monitor (1920x1080) connected to the adapter, and it worked just fine; however, I have put a video capture ...
5
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1answer
195 views

Connecting Mac Book Pro 2017 to 2 Projectors via USB C

Just wondering can I connect my 13" MacBook Pro to 2 HDMI projectors? I would like to extend the displays ( 3 display, 1 laptop screen and 2 projector screen) instead of duplicating if that is ...
1
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1answer
9 views

Audio issue when HDMI drawing tablet is connected?

I'm running a 13" Macbook pro 2017 with operating system Mojave 10.14.4. I have an HDMI connected tablet (Huion Gt-220). When I connect my drawing tablet to my computer, it locks out my sound for the ...
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0answers
13 views

Why does my HDMI display -sometimes- need to be manually reconnected after sleep? [duplicate]

My 27" Samsung display stays connected to my 2015 MacBook Pro (MBP) at all times when I'm home via a standard HDMI cable. The display stays powered on. My MBP sometimes goes to sleep e.g., overnight. ...
0
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1answer
11 views

Connect Macbook Air with external monitor

I have a MacBook Air (13-inch, Mid 2013) that uses an Intel HD Graphics 5000. I also plan to buy the monitor that is supposed to have connectors for DisplayPort and HDMI with a resolution of 2560x1440 ...
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0answers
8 views

Can MacBook Pro/Air models with just two Thunderbolt 3 ports support two external HDMI displays? [duplicate]

With recent models (2018/2019) having only two Thunderbolt 3 ports, one used for charging, can a single Thunderbolt port support two external HDMI monitors? Does the video chip-set support it? Can the ...
1
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1answer
45 views

External monitor HDMI vs Displayport

I just got a nice 4K monitor (LG 27ud68p-b) and, when connected to my 2017 MBP 15" via USB-C to HDMI, the refresh rate is noticeably slow and results in choppy moving images. Even when it's not a very ...
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0answers
15 views

Weird problem with external display

I've just connected MacBook Pro 13" (new one with USB-C) to my external display (quite old Samsung, 24", 1920x1200) via HDMI and there is a weird glitch on the bottom of the screen. I used this ...
0
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1answer
27 views

2017 Macbook pro 13 inch 3 monitors help

I have done quite a bit of searching and haven't found a solution to my issue. I have a 2017 macbook pro 13 inch with touchbar. I want to be able to use 3 monitors 1080p via apple usb c digital av hub ...
0
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1answer
27 views

HDMI Stop working after Macbook OS Update

HDMI Stop working after Macbook OS Update to Mojave Version 10.14.3. Was working perfectly. I tested cable and monitor and it works on other laptops.
1
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1answer
23 views

External Display recognized as DisplayPort, but connected via adapter using HDMI

I'm trying to connect a brand new macbook Pro with 2 USB-C using an adapter with HDMI. The macbook detects the display, but the Connection Type is DisplayPort. Is there a way to change it? Screen ...
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0answers
17 views

Corrupted display on Mac Mini with two monitors

I have a Mac Mini (5,1 mid 2011) running High Sierra with two monitors connected, one HD and one ultra-wide. It's generally been fine, but sometimes (and currently every time) when I start it, one of ...
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0answers
46 views

HDMI not working on 2018 MacBook Air in Bootcamp Windows 10

I have a USB-C hub that includes an HDMI port. This works fine while running macOS but not in Windows 10 Bootcamp mode on a 2018 MacBook Air. My multi-part question is [a] is this a driver problem [b]...
1
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1answer
17 views

How do different methods of connecting USB-C display work?

There are multiple ways how we can connect an external display via USB-C to an Apple device (say MacBook Pro). For example: directly (e.g. LG UltraFine) using Apple's USB-C to HDMI/VGA/DVI dongle ...
2
votes
1answer
64 views

Use the HomePod to turn on TV and Receiver

is there any way to have the Apple HomePod control my receiver? Here is what I am thinking: I would ask the Siri HomePod to play a playlist and Siri would automatically turn on my receiver (Sony STR-...
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0answers
22 views

Secondary display says no input [duplicate]

I have a mid-2007 iMac (EMC 2133, 20"). I upgraded the CPU and WiFi card in order to run Collin Mistr's High Sierra Patcher tool. That worked fine. Now I need to connect a second display. I hooked ...
2
votes
1answer
29 views

Can I safely charge&use my macbook with the adaptor below? [duplicate]

I need to use an Ethernet cable, VGA monitor, usb connection and power cable in same time with my macbook. That's why i need an adapter because my macbook has only one usb-c port. Let me share a ...
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0answers
170 views

Can't get DELL U2717D to display retina quality on macbook pro 2017

I have a Dell Monitor U2717D and I tried connecting it to my 13 inch MacBook pro 2017 running MacOS Mojave. I tried using different cables such as 4K HDMI to USB C, DisplayPort to USB C, etc.. but the ...
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0answers
13 views

How to prevent iMac from using the second monitor but still using its audio?

I connected my AV receiver to my iMac via the Thunderbolt-to-hdmi adapter but I do not have any TV connected to the receiver, meaning no screen. The whole purpose of this was for being able to use ...
0
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0answers
118 views

How to connect macbook pro (13-inch, 2017, Two Thunderbolt 3 ports) usbc -> hdmi splitter -> 2 non-mirrored monitors?

Computer : macbook pro no touchbar 13-inch, 2017, Two Thunderbolt 3 ports Right now my macbook pro is connected to two external monitors (identical 274E softblue phillips < 4k)but both external ...
1
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1answer
71 views

OSX wont save external monitor screen arrangement settings, weird graphics issues with displays

Ive got a 27" iMac 4.2ghz i7, 16gb ram, 8gb GPU, running OSX 10.13.6 Ive got 2x external 1080p monitors connected to it via the thunderbolt ports using 2x of these HDMI to thunderbolt adaptors ...
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0answers
81 views

Use Apple monitor as second monitor for windows pc

I've an Apple monitor 27' with thunderbolt port, such the one in the picture below. Do you know how if it could be used as external monitor for a windows pc, that has not thunderbolt port?
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0answers
36 views

MacBook performance degrading while using external screen through some USB-C Adapters

The Setup: MacBook pro 2018 13" without touchbar Asus 24" Screen GooBay 62113/Inateck sc01001 USB-C Adapter When the Screen is connected through the GooBay Adapter via HDMI, the performance of ...
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1answer
300 views

Screen blinking “HDMI no signal” when Mac is sleeping

I usually leave my computer, and let it go to sleep after 15 minutes. My external screen is showing a blue screen saying "HDMI no signal" every other minute while my MacBook is asleep, and the screen ...
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0answers
161 views

Setting TRUE 1080p output on Mac Mini HDMI?

At my church we have a display system that uses a HDMI splitter to drive three 1080 TVs as well as an old (might be relevant) 1080 monitor. We were running this setup off a 2012 MacBook pro with a ...
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0answers
41 views

MacBook Pro 13” screen dead - how can I use external display?

An authourised Apple store have told me I need a screen replacement after my screen went dead. When I connect the MacBook Pro (late 2013 model) to my Samsung TV via hdmi I see the log in screen on the ...
0
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1answer
18 views

displays - drive displays from USB-C hub

Is it possible to drive a monitor from a hub? If the hub was Thunderbolt 3 compatible and I used a USB-C to HDMI adapter, from the hub to the monitor, would this work? The monitor in question is a ...
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0answers
157 views

Mac mini (2014) won't output video signal over HDMI only via Thunderbolt

I've got a 2014 Mac mini running OSX 10.11.6 connected to 2 screens; one via the native HDMI and one via a Thunderbolt to HDMI convertor. It has been running fine for about 2 years. I turned it off ...
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0answers
19 views

iPhone XS video output for professional applications

I wish to use two iPhone XS as live video cameras connected to a SONY switcher via HDMI or SDI for a live stream. I have a couple questions: Can I output live video as a 'clean' signal image to the ...
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0answers
629 views

Why does HDMI on the 2018 Mac Mini have a “codec compressed” look?

I just purchased the 2018 Mac Mini, and also a LG 32UD99-W monitor that does 4k (3840x2160) at 60 Hz. When connecting HDMI cables from the Mac Mini HDMI out port to the monitor HDMI in port, the ...
1
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1answer
525 views

4K HDMI output from MacMini (late 2018) to LG C8 (OLED55C8PLA)

The LG TV just says "no signal". I'm connecting the Mac Mini to another TV just fine (1080p though). I'm using the same cable to connect a Windows 10 machine and it works over 4K just fine. Is there ...
2
votes
1answer
28 views

Using Macbook and Windows Desktop with wired mouse and keyboard

My Monitor has 1 spare HDMI port and the desktop it is connected to (through another HDMI) has wired mouse and keyboard attached to it. I am looking for a device or cable that would allow me to plug ...
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0answers
109 views

Audio hijack and loopback setup for spotify eq

I want to have the following setup on my MacOS machine: All audio should go to a Loopback device (call it "main"), configured as the main system audio device, so that I can use the native macOS ...
0
votes
1answer
35 views

Maximum number of audio channels over HDMI

Is MacOS Mojave capable of sending more than 8 audio channels over HDMI? For example, if I purchase a DisplayPort -> HDMI 2.0 adapter, will I be able to select more than 8 audio channels in the MIDI ...
2
votes
1answer
243 views

Incorrect external monitor resolution detected, true resolution not available

I have a BenQ EX3501R monitor connected by HDMI to my MacBook Pro, which is a Early 2015 model. The issue being that OS X gets the resolutions completely wrong - the monitors native resolution is ...
2
votes
1answer
929 views

Mac mini 2018 HDMI surround sound output

I have a new Mac mini 2018. I want to get surround sound over HDMI. I have a receiver that is capable of transmitting 5.1 surround sound to my speakers, and HDMI video to my projector. I have ...
1
vote
1answer
208 views

Why can't I use this monitor full resolution at 60hz on my 2013 Mac Pro with OS X Mojave?

https://www.samsung.com/us/computing/monitors/uhd-and-wqhd/32-uj590-uhd-monitor-lu32j590uqnxza/#specs Says 60hz on the site, tried HDMI1, HDMI2, FreeSync, tried various HDMI cables, even bought an ...
1
vote
1answer
47 views

Dual external monitors: Blink on wake

I have two HP 24es monitors connected to my MacBook Pro. The input to the monitors are via HDMI. One connects directly to the MacBook Pro via a HDMI cable. The other connects via a HDMI to DVI, DVI to ...
2
votes
2answers
1k views

Screen goes black for a few seconds intermittently with Mac Mini 2018

I purchased a Mac Mini 2018 and connected it to my Dell 42" monitor via HDMI. I works fine except that the screen goes black intermittently and comes back after 3 or 5 seconds. The monitor and cable ...
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0answers
29 views

Attaching a HDMI screen to my Macbook interferes with Network access

I have a Macbook Pro and an USB-C Adapter where I can attach a HDMI screen. Without a screen attached: on the iPad remote I press the Play button turns green Once I press the Stop button the Play ...
2
votes
0answers
9 views

mbp late 2013 and hdmi odd behavior

I've been using a mac book pro late 2013 with an Asus proart display monitor connected by Philips HDMI cable with no adaptors for over a year now. Only recently I got a weird behavior that happens ...
0
votes
1answer
48 views

MacBook doesn't remember Screen Orientation

I've got at work two external displays + a MBP 13" 2017. (OS: Mojave 10.14.1 Beta) The monitors are both BenQ (GL2450), connected via HDMI to a Thunderbolt 3 port. (one through hub, one through plain ...
1
vote
1answer
702 views

HDMI Audio doesn't work on AMD RX580 Mac Pro 5,1

I have a Mac Pro 5,1 2012 and just installed an AMD RX580 GPU. The sound doesn't go through the HDMI so I have to plug into the headphone outlet on the front of the computer (and can't use the ...
2
votes
0answers
575 views

How to connect iPhone to USB Type-C Portable Monitor?

I'm trying to figure out a way to connect iPhone 5 (lightning) to ASUS MB16AC portable monitor with USB type-C input as only connector that at the same time serves as power supply. Thought about some ...
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0answers
16 views

personal experience with Thunderbolt 3 dock and dual hdmi displays

i've placed a few of these, with mixed results, with cable-matters, startech, belkin, caldigit. but i have a couple HP displays which are just messing up pretty regularly with all these docks (or i ...
5
votes
0answers
430 views

Macbook Pro 2018 blurry output on external HP Z23N display

I'm on a MacBook Pro (15-inch, 2018) with Mojave (10.14). I'm trying to connect my MacBook to an external monitor (HP Z23N) through HDMI + Apple's usb-c adapter A1621 EMC 2877. The connection works ...
0
votes
1answer
52 views

Can I use MST on one mDP and 4k on the other?

I have a mid-2015 MacBook Pro 15" retina (A1398), and I'm trying to setup external displays as follows: 4k tv (TCL 43s405) @60 hz with mDP to HDMI adaptor 2x HP VH240A 1080p using mDP to 2xHDMI MST ...
1
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1answer
1k views

Closed MacBook Pro keeps turning external display on/off [duplicate]

I hooked up my old 2012 retina MacBook Pro to an external 4k monitor via HDMI. It works fine while the lid is open, but as soon as I close it, various issues occur. Monitor won't work or receive ...
2
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0answers
291 views

macOS — Is there a way to force HDMI-connection “restart”?

I'm using a MacBook Pro (late 2016) with an USB-C-to-HDMI cable made by AUKEY to connect to a projector (BenQ, Casio, Epson). There are days, everything works just fine, and there are days (like ...
3
votes
0answers
43 views

Mac splitscreen (not dual display)

I have a Macbook Pro 2012, and I want to split the display in two. I don't want to set up a dual display though. I want a cloned desktop on the same screen, so that it's the same image on both sides. ...