Questions tagged [hdmi]

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

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No Video Output on Second Screen During Startup?

I have a 2018 Mac Mini with two screens attached; one is a 4k screen connected via HDMI, the other is an old 20" Cinema Display attached through a USB-C to DVI adapter. Now, when started up this ...
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Using Late 2015 13“ MacBook Pro as a 2nd monitor for Late 2015 27” iMac

I have a Late 2015 13" MacBook Pro (HDMI, Thunderbolt 2, and USB 3) that I want to use as a 2nd monitor for my Late 2015 iMac (Thunderbolt 3 aka USB-C and USB 3). What is the cheapest/best cable ...
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21 views

Mac Mini still detects monitor when it is unplugged or turned off

I have a Mac mini (2018) that continues to detect an HDMI connected monitor even after the monitor has been powered off/unplugged from power. When I unplug the HDMI cord it does remove it from my ...
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Connect Early 2015 Macbook pro to TWO HDMI monitors via Thunderbolt or USB

I have two free thunderbolt ports on my MacBook, and would ideally like to connect to two external HDMI monitors and have the macbook screen active as well. I would like to extend the desktop and not ...
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24 views

External Display not displaying full OSD function tech said solution is HDMI Adapter?

I would like to start off saying I have 0 tech knowledge and this staying at home period has forced me to learn alot! So recently I bought a new 4k monitor to upgrade my work at home experience. ...
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How to get 60Hz on a 4K Monitor using a 2018 Mac mini

I do a lot of work with music, and have two external 4K displays hooked up to my Mac mini. I’m using two LG 24UD58-B monitors, but I cannot get 60Hz out of them using an HDMI cable, which is then ...
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19 views

Macbook pro 13" (2018) compatible external monitor [closed]

Can someone recommend a 27" or 24" monitor that works with MacBook Pro 13" (2018 with 4 thunderbolt ports) connected through HDMI or DisplayPort (not VGA). The budget is 250$ at most, purpose is ...
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No DVI-D Cable for Dell P2210 [duplicate]

I am trying to set up a work station with two monitors (Dell P2210) for my Macbook Pro 2017. Monitor 1 is connected with VGA cable using Apple Mini DisplayPort to VGA Adapter. Monitor 2 is connected ...
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CRG9 Thunderbolt Display not displaying anything [duplicate]

I have a MacBook Pro (16" 2019) running Catalina. Trying to connect the samsung CRG9 to it using a thunderbold to hdmi adapter. When plugged in, the macbook recognises the monitor under display ...
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No sound output from Macbook to TV via HDMI?

I’ve got an LG OLED TV with HDMI support. I have a 2018 Macbook with USB-C ports running Catalina 10.15.4. I bought a USB-C to HDMI 2.0 cable and hooked up my Macbook to my TV. The pictures come out ...
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MacBook will not give a HDMI output while it is closed - MB doesnt sleep because mouse and keyB can be used - audio output works too

I promise this is a different problem than all the other posts I've looked up on here. Its very weird and unique. So i have power and external mouse and KB and hmdi cable to my external monitor all ...
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1answer
14 views

Visio TV attached with HDMI to iMac zombie

I've connected my Vizio TV with HDMI and thunderbolt (USB3?) to my iMac. It seems to work pretty well. But when I turn off the TV, the Mac still thinks that it's connected and behaves in dual monitor ...
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Connect 2017 iMac to an HDMI tv?

What cable do I need for that? I've seen different things in different places, never specifically for the 2017 iMac with the following specs: 2017 27" iMac Retina 5K 24GB RAM Radeon Pro 580 8GB ...
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My external monitor not fitting full screen - samsung

It is my first question here so sorry if everything is clear. My problem: I bought an external monitor SAMSUNG LS24R350FHUXEN [LINK]1920x1080.(https://www.samsung.com/uk/monitors/monitor-sr350/). ...
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Can I use my iMac as a second display with my laptop, without a Thunderbolt port?

I have looked around the Internet for an answer to my specific problem, but can't seem to find the answer I'm looking for. I am trying to figure out whether it is possible to use my 21.5-inch mid-2011 ...
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14 views

Macbook Pro detects external monitor but the monitor is black

I have a Macbook Pro 13" 2015. I am unable to use an external monitor with my laptop because even though my Macbook can detect the display, the display is black (on every single display I've used from ...
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Do I need SEIKI SE39UY04 latest firmware for resolution to work on my Mac?

I am a bit late to the party here... I procrastinated far too long in getting the firmware updates, for my 2 SE39UY04 monitors... to the point that SEIKI no longer has them available... I find myself ...
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External monitor + projectors no longer work since Catalina update. mid-2012 retina MacBookPro, HDMI connection

Since updating my mid-2012 MacBookPro(16G RAM) to Catalina, any external monitor or projector connected via HDMI will initially work but after 10-20minutes, my MacBook's fan gets loud and the MacBook ...
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iMac mini display port to HDMI connector | Connection is detected but produces no output to TV [duplicate]

I haven't been on here in a while and I hope this is the correct thread and want to say any help would be immensely grateful, I am actually an IT guy myself so I feel kind of embarrassed I haven't ...
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1answer
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How do I set up 3 monitors to a Mac Mini

I have 3 monitors which I want to connect to my Mac Mini. 2 x HP and 1 x DELL. All 3 monitors have HDMI cables. I already have a Thunderbolt adapter but it only has one HDMI port. The adapter is ...
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Font rendering on Dell U3818dw 38" monitor with 2014 Macbook Pro

I just got a Dell U3818dw monitor for my MBP mid 2014 When I bought the monitor I missed the fact that my old mac only supports HDMI 1.4 and is thus not able to deliver the massive 3840x1600 ...
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2015 Retina iMac Unable to Display 4k@60 Hz on My External Monitor

Recently I purchased a 4K monitor for my Mac. I have a MiniDP to HDMI 2.0 converter and a HDMI 2.0 cable. I connected my late 2015 Retina iMac to the external monitor. I was able to get 4k@30hz on my ...
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1answer
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Triple HDMI monitors on 2018 15" Macbook Pro via three of Apple's usb-c-digital-av-multiport-adapter?

So, I have this 2018 15" 32 GB Macbook Pro 2,9 GHz 6 core i9 with Radeon Vega 20 GPU and I need to connect three hdmi monitors (@ minimum 1080p/60Hz) and three usb devices to it. Will three of the ...
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48 views

Issues while connecting an external display to my MacBook Air 2015 using a DisplayPort adaptor

The other day I started having a random issue connecting an 1080p external display to my connected to my MacBook Air 2015 using a Mini DisplayPort to HDMI adaptor that I've used for about 6 months. ...
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22 views

iMac external Dell monitor no signal

I have an iMac 27 inch late 2013 using High Sierra 10.13.6. I purchased a Dell SE2116H external monitor and connected it with a Thunderbolt > HDMI cable. Unfortunately the monitor is blank, and a ...
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45 views

How can I get 2560X1080 resolution on my LG 29UM58-P monitor, connected to my 13" MacBook Pro?

I have a MacBook Pro (Retina, 13"-inch, Early 2013) with 8Gb RAM and Intel HD Graphics 4000 I also have a 19" Polyview 16:9 monitor connected via Thunderbolt to VGA adaptor, which displays its native ...
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36 views

Extending Display WITHOUT plugging in monitor

So with the current pandemic I'm WFH, but didn't manage to bring my monitor back from work. So far I've been plugging my macbook into the TV to extend the display, then using screen sharing on my ...
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46 views

2019 16 inch Macbook Pro doesn't recognize monitor connected to usb c adapter

I have purchased this generic adapter: https://www.amazon.com/Qidoou-Multiport-Converter-Compatible-Chromebook/dp/B082F54RYM/ref=cm_cr_arp_d_product_top?ie=UTF8 and when I connect an external monitor ...
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MacBook doesn't output native resolution on monitor with one dongle, but works with a different dongle, despite the EDID outputs being the exact same

I've been going crazy trying to figure this out, any help would be greatly appreciated. 2017 Macbook Pro Sceptre 35 inch ultrawide monitor (3440x1440) Two usb-c hubs / dongles. Uni 8 in 1 and I ...
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1answer
53 views

MacBook Pro suddenly not connecting to HDMI

I have a MacBook Pro and regularly connect it to a Samsung TV via HDMI. Suddenly, it has stopped working - when I connect the cable the screen looks like it is about to share, then comes back. To my ...
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Only 1080p on my second monitor while it should be 2560x1600 [duplicate]

So I just bought a new screen (the LG 27UL500) which should support 4K to connect with my Macbook Pro. I've connected my Macbook Pro with an Mini DisplayPort to HDMI connector (which should support 4K)...
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65 views

Can I connect a firewire device and an HDMI display to 2015 Macbook Air with a single Thunderbolt 2 port?

I have a Korg ZERO4 mixer which has a two firewire ports (not sure if 400 or 800). I've been using this mixer via a firewire --> thunderbolt adaptor. Now I'm looking to add a monitor connected via ...
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46 views

IpadOS connect lightning to hdmi and usb together

I've got the ipad mini 5th generation. I want to connect it to my monitor, it has usb-c/hdmi ports, also I want to use my usb devices, I've done this with apple tv, but picture is not so good on 4k ...
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26 views

Force Mac Mini to output raw RGB

I have a Mac Mini connected to an HDMI TV, and macOS's color management causes severe rounding errors that cause noticeable bending when displaying wide, low-contrast gradients. Whichever built-in ...
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26 views

Troubleshoot HDMI on Macbook 2015 w/OWC USB-C Dock

I have a OWC USB-C Dock for my Macbook 2015 (which only has a USB-C port), running Mojave. Dock works fine w/power, USB, and ethernet connections (this am). Used to work fine driving a monitor via ...
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45 views

Macbook Pro 2017 not detecting any screen, hdmi or VGA

I have been trying to hook my 2017 13" MacBook Pro (2 thunderbolt ports, no touchbar) up to an external display but it's not detecting any screen is connected at all. I've tried going via HDMI (USB-C ...
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1answer
18 views

How to output sound through HDMI adapter (late 2008 Macbook)? [closed]

Is there a workaround that allows the laptop to send sound to a projector, such as using a different type of adapter?
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33 views

15" 2019 MacBook Pro doesn't detect DVI monitor

I have a 15" 2019 MacBook Pro (so USB-C ports), connected to a Apple USB-C Digital AV Multiport Adapter. If I connect the HDMI output of that to my ancient 24" Dell monitor using an HDMI to DVI cable, ...
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1answer
65 views

MacBook Pro (15-inch, 2019) with a 4k monitor mis-identifies monitor

I've got a: MacBook Pro (15-inch, 2019) LG 32UK50T-W 32-Inch 4K UHD (3840 X 2160) with Radeon Freesync Technology and DCI-P3 95% Color Gamut The HDMI cable the monitor came wiht Apple USB-C port ...
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1answer
79 views

External Monitors Flicker when plugged into my Mac

Seeing as I am going to be working from home the next couple of weeks (or possibly longer...) I purchased some USB-C to HDMI cables to plug my work Mac into my desk monitors. They display correctly, ...
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0answers
90 views

Connecting game consoles on a 23" Cinema Display?

I have an old 23" DVI Apple Cinema Display (from ~2004 I believe) that my dad found awhile back. I bought a DVI to HDMI adapter to use it with my MacBook Pro and it works flawlessly. I can also ...
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42 views

MacBook Pro does not detect the third screen

I am trying to connect two Dell screens to my Macbook Pro 13" via a Dell dock. One screen is using HDMI cable and the other one a DisplayPort cable to connect to the dock and I am connecting the ...
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0answers
33 views

Different Scaling Options for Same Monitor

I have two identical Dell U2718Q monitors (3840 x 2160). They are both plugged in with two identical HDMI cables to a 15" 2017 MBP running Mojave 10.14.6 via two identical "USB-C to Digital AV" ...
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1answer
182 views

How to connect Macbook Pro 2015 and 2 x Dell U2518D monitors

I bought 2 x Dell U2518D monitors to use with my 2015 Macbook pro 13". This is a 2560x1440 1440p monitor. All the forums said this could be done and that they were compatible, but I didn't check the ...
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46 views

External Monitor appears low resolution

I have connected a 21:9 external monitor to my 2017 MBP w/ Touch Bar through a usb-c to hdmi adaptor. The display appears blurry and almost like low resolution scaled up, does anyone know of any fixes?...
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33 views

MBP 2016 + iMac 21 (mid 2011) using a thunderbolt 2->HDMI cable and an HDMI->type C adapter?

I was wondering if that would work? I've found out this to be the cheapest option for me, albeit an awkward one.
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1answer
1k views

No sound through USB-C to HDMI adaptor on MacBook Air 2019

MacBook Air, Retina, 13-inch, 2019 Running Catalina 10.15.2 Using USB-C to HDMI adaptors, MacBook Air sound preference center cannot recognize the device it is plugged to (HDMI cable connects the ...
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1answer
48 views

With a 2019 MBP, are there any benefits to driving a 4K display via Displayport (1.4) vs HDMI (2.0)?

I have an LG550 27" 4K monitor that has HDMI 2.0 and DisplayPort 1.4 connectivity. When driving it from a MBP 2019, I can use my dock's HDMI-USB-C adapter or an USB-C to DisplayPort Female adapter ...
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1answer
23 views

On Macbook Pro with 2 HDMI monitors, is it possible to associate the USB-C/HDMI with a desktop/monitor?

On Macbook Pro with 2 HDMI monitors via 2 USB-C/HDMI adapters. I have multiple desktop's on each display. The macbook itself always has the same desktops on, but my two HDMI monitors periodically/...
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using a LG 34um94-p ultrawide monitor with a late 2012 mac mini

I have this cool new LG monitor that I have mounted and plugged into my Mac Mini (late 2012, high sierra), but the LG monitor is not getting a signal. I have tried HDMI and a mini-display to HDMI ...

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