Questions tagged [display]

Generally a visual screen used to display graphical or text output

441 questions with no upvoted or accepted answers
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External display not recognized after waking from sleep until restarted

I have a MacBook Pro (Retina, 13-inch, Early 2015, macOS High Sierra 10.13.6) which fails to detect an external display after is has woken up from sleep. (Update: Now running macOS Mojave 10.14.5 on a ...
8
votes
1answer
5k views

Macbook doesn't display on external screen until after I log in (Yosemite). How to fix?

I have a macbook pro (mid-2011) and an HP Pavilion 22bw (prob inconsequential) connected via a Thunderbolt DVI Adapter. Ever since installing Yosemite, I now need to open the macbook pro and log in ...
7
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0answers
2k views

MacBook Pro high CPU with external monitors

I recently ordered two 4K monitors (LG 27UD88). I connected them using Mini DisplayPort to DisplayPort Adapter cable to my MacBook Pro. When I have the monitors connected, the CPU load is very high ...
6
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11k views

Monitors don't show up in Display Arrangement preferences

I have two external monitors on my MacBook Pro 2015 15" and I was doing an adjustment on the display arrangement yesterday when suddenly the displays on the arrangement tab gone. I tried already: ...
5
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0answers
492 views

Why don't my windows move back in Mojave?

I have a MacBookPro9,2 and an external monitor at my desk. Sometimes I unplug everything from the MacBook and carry it somewhere else awake with the lid open. I'll come back to my desk and plug it ...
5
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0answers
471 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 ...
5
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0answers
547 views

How to enable “larger text” scaling slider on a 2k monitor?

I have a Mac Mini (late 2014) connected to two Dell U2515H monitors, which have 2560x1440 resolution. Problem: everything (macOS UI elements) is too small at this native resolution. I was able to ...
5
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0answers
736 views

2016 MBP External Monitor Black Screen USB-C to DisplayPort

I have a 2016 MBP running 10.12.6 with an external Dell 24" (P2415Q) monitor in my home office. At work I have a Dell 27" (U2717D) and a Dell 24" (U2415). At work the U27 is connected DisplayPort to ...
5
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0answers
2k views

Can't wake up Mac-connected display when in clamshell mode

My setup is this: MacBook Pro TouchBar Late 2016 (15'') a Dell P2415Q display, connected via USB-C → DisplayPort cable External keyboard, mouse, connected wirelessly (through dongles/hub/then usb-c ...
5
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0answers
3k views

After High Sierra, weird colours appear when waking up MacBook Pro

I'm coming from reddit where they suggested me to post here. There seems to be many users with the same issue. Using a 13" MBP Early 2015. After updating to macOS High Sierra I see weird colours for ...
5
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0answers
746 views

Dell external monitor has blurry font

I have a Dell S2316H monitor which I connect to my MacBook Pro (early 2015) using the built in HDMI port. The fonts are looking very blurry on the external monitor. I own the MacBook for about a week....
5
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0answers
199 views

Keyboard shortcut to move fullscreen app to second display

Is there any way I can set up a keyboard shortcut to move full screen apps (i.e., desktops) between my main display and my external display in OS X 10.10? I know about tools like BetterSnapTool, but ...
5
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0answers
333 views

Dual screens: one monitor switches to desktop, window appears on other monitor

My computer is behaving oddly and I would like to know if someone else has this issue too (if so, it's a bug) or that I am the only one (in which case there is probably a quick solution). Let's say I ...
5
votes
1answer
416 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 ...
4
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0answers
545 views

How to get Night Shift on both external monitors?

I just surprisingly find that only one of my two external monitors gets Night Shift effects. Can anyone tell me how I can make both work with Night Shift? MacBook Pro (15 inch, 2017) macOS 10.14 Both ...
4
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0answers
130 views

Cannot drag entire Desktop to an extended monitor on Mojave

I have several application windows open in one of the desktops on my MackBook Pro (late 2016) running Mojave 10.14, and my work requires me to use extended monitors. Whenever I wanted to move a ...
4
votes
0answers
83 views

Display arrangement keeps changing

My iMac keeps changing the arrangement of my two add-on displays. The third one, the one in the middle, is the computer itself which always stays in the middle. I'm running High Sierra 10.13.6. It's ...
4
votes
0answers
2k views

Is there a Mac-native equivalent of xvfb for running on a headless Mac server?

I'm attempting to automate some tests of a GUI application on a headless Mac. I'm able to run theses tests from the terminal on a desktop Mac, and there's no issues and they run as expected (without ...
4
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0answers
2k views

MacBook Pro does not recognize audio from usb c external monitor

I have a 15" MacBook Pro 2017 running High Sierra 10.13.5. I use 2 external monitors, one at home and one at work. MacBook won't recognize output audio device from monitor when I plug it in. It ...
4
votes
0answers
308 views

2560x1440 @ 60 Hz HiDpi on a MBPr 13" Late 2013

My setup: Late 2013 13" MacBook Pro Retina (MBPr) Dell P2715Q (4k) monitor Connect the MBPr with the monitor using a mDP-DP cable SwitchResX shows me the following resolutions: I tried the ...
4
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0answers
4k views

Dual monitor flickering: the secondary monitor does the flicker

I am experiencing flickering with my dual monitor setup. The nature of the flicker is "on/off", i.e. the screen gets completely black for a split second (sometimes a few seconds) and it goes back on. ...
4
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0answers
2k views

Serious usability issues with HDMI external displays connected to USB-C adapter on Macbook Pro 2016

The Apple USB-C HDMI adapter has a very non-intuitive behaviour that makes it difficult to work with. Tested with LG 24MP88 LED monitor and Macbook Pro 2016 with MacOS High Sierra Case 1: Display is ...
4
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0answers
853 views

Modifying the Menu Bar

TL;DR I'm attempting to locate the system files/variables responsible for drawing the menu bar in Sierra so that I can tweak the color and opacity, and would love any information you might have on the ...
4
votes
0answers
437 views

When USB-C external monitor sleeps, it cuts connections to its USB hub (late-2016 MacBook Pro)

I have an LG UD88 monitor, which is 4K and connects over USB-C to my new MacBook Pro. I love it—except for a couple of issues, one of which is that when my MBP puts the display to sleep, any devices ...
4
votes
1answer
6k views

HDMI Display failure on Mac Mini (late 2012)

I have a late 2012 Mac Mini running OS X Mavericks (10.9.5). When I hook up two displays to the Mini (one Thunderbolt, one HDMI) it will configure and work properly for a time. After 1-2 hours, or ...
4
votes
0answers
514 views

Interface Scaling / Independent Resolution per Application on MacBook Pro Retina

I have a MacBook Pro Retina and I run it on the unsupported/non-HiDPI 2560x1600 to be able to work on multiple windows at the same time. This resolution increases the DPI allowing a large screen real ...
4
votes
0answers
833 views

My monitor doesn't sleep if my mac is connected via HDMI: who's at fault?

I have a MacBook5,1 running 10.8, and an Asus VW246 monitor. I connected it to the monitor using a "MiniDisplayPort->DVI(f) adapter" + a "DVI(m)-DVI(m) cable". Now I've bought a single "...
4
votes
0answers
1k views

Is it possible to have an iMac maintain target display mode even through sleep/screensaver

I want to be able to make it so that my iMac doesn't exit target display mode until the thunderbolt cable is pulled from my Macbook. I love target display mode in theory, but every time I lock my ...
4
votes
0answers
293 views

Multiple monitors get mixed up

I am on OSX Lion, with a MacBook Pro. I am using the DisplayPort for an external monitor and two USB Diamond BVU195 for two extra monitors. Each time when I turn my computer on, the two monitors get ...
4
votes
1answer
265 views

Screen brightness decreases when I middle-click

I have a logitech wireless mouse hooked up to a macbook pro running 10.7. Whenever I middle-click the mouse button, the laptop's display brightness decreases. It behaves just as if I had pressed the ...
3
votes
0answers
135 views

How to stop iPhone from automatically dimming the brightness?

I have unchecked Auto-Brightness under Settings app → General → Accessibility → Display Accommodations. I have also disabled Night Shift under Settings app → Display & Brightness. I have Low Power ...
3
votes
0answers
45 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. ...
3
votes
0answers
646 views

Use built-in iMac camera on display connected via Thunderbolt

I've got a 27" iMac connected via Thunderbolt using Target Display Mode. It all works fine. I am wondering if there is a way (hack or otherwise) to activate and use the built-in camera from the iMac ...
3
votes
0answers
23 views

Icons on menu bar redraw at each monitor change

I have an issue with my setup that drives me nuts and is more and more annoying. I have a 4 displays setup and each time I change of monitor most of the icons in the menu redraw and introduce lag ...
3
votes
0answers
17 views

How can I create a shortcut to restore my MBP screen to a specific brightness?

I've recently calibrated my MBP's display and my LG 5K 27" display at home. When I'm on the go, at school for example, I would like to be able to raise or lower my screen brightness without screwing ...
3
votes
0answers
16 views

On-Board Display Issue with Weirdly Inconsistent Symptoms (Late 2016MBP)

Late 2016 MBP, MacOS10.13.4, Radeon Pro 460 4096 MB Over a week ago, my inbuilt display stopped working. Specifically, only the top quarter inch worked. After a few reboots and connecting/...
3
votes
0answers
1k views

Why would updating to High Sierra 10.13.4 kill one external monitor but leave another identical one working?

I have a 21" Retina iMac (2017) with two ASUS PB258Q monitors, each connected to a USB-C port via a StarTech USB-C to DisplayPort cable. Since I updated to 10.13.4, only the left monitor works—even if ...
3
votes
0answers
468 views

Mac mini 2012 mini-DisplayPort flashes to black intermittently with High Sierra 10.13.2

I asked in the apple forum, but got no answer, so trying here... Mac mini 2012 mini-displayport flashes to black intermittently with High Sierra 10.13.2 I'm setting up a new-to-me Mac Mini 2012 with ...
3
votes
0answers
666 views

WindowServer crashes with external monitor on macOS High Sierra

For now I have a following issue: When I connect my external monitor (DELL P2418D) to my mac (MacBook Pro 15 2015), everything works fine, but after some long period of sleep(20-30 minutes or more), ...
3
votes
0answers
547 views

MacBook Pro 2017 doesn't connect Dell U2713HM via (Hama) USB-C to DisplayPort adapter but MacBook 2016 works

I am trying to connect MacBook Pro 2017 to Dell U2712HM monitor. I bought Hama USB-C to Display Port adapter but it does not work with MBP 2017. When I plugged it, it does not recognize it - nothing ...
3
votes
0answers
344 views

LG Ultrafine crashing MacBook - Panic Report - UPSB: thunderbolt power on failed

MacBook powered from the monitor. Locking screen. No waking up, computer restarted due to crash. It's happening over and over again. Anonymous UUID: 9678FF68-9D96-49C0-35C6-02F05323418E ...
3
votes
0answers
240 views

OSX 10.13 Font rendering problem - Dell U3417W, ultrawide curved displays look awful.

I realize this question has been asked before, but there seem to be about 50 different posts all offering different answers which haven't solved my issue. I have a 2017 Macbook Pro. I just picked up ...
3
votes
0answers
528 views

No dual brightness control - 2017 MacBook Pro and dual LG UltraFine 5K Display

TL;DR Both 'dual' controls show in OS for brightness, but they both only ever control one of the two monitors. Basic Summary When I plug in dual thunderbolt displays, everything appears okay until ...
3
votes
0answers
82 views

Secondary displays randomly swap content on reconnect

I use a 2015 15" MacBook Pro with two external displays in the following approximate physical configuration: +-----------+ | +------------------------+ | || |...
3
votes
0answers
87 views

Is it possible to disable/enable a current model iMac's internal screen at will?

TL;DR As far as I know there is no way to easily disable/enable an iMac's internal display at will while simultaneously powering up an external display. Can anyone suggest a solution to achieve this ...
3
votes
0answers
525 views

How to tell which Alternate Mode a display is using on 2016 MacBook Pro

I have a 13" MacBook Pro 2016 (non-touchbar) which I've connected to a couple of HDMI displays. I know that Macs support both HDMI and DisplayPort over USB-C Alternate Modes, and I'd like to know ...
3
votes
0answers
31 views

Display with twice the same refresh rate, one works, the other does not

My external display has two refresh rate settings, but both have the same 60 Hz value: If I select the topmost, the screen image is too wide for the screen. If I select the bottom value, all works ...
3
votes
0answers
222 views

Scaling resolutions on MBP Late 2013 with 4K monitor

I'm connecting my Late 2013 MBP with Iris Pro graphics to a Seiki 39" 4K monitor. Seemingly at random, I get two different types of Settings->Displays screens: Importantly, Screen 2 lets me choose my ...
3
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0answers
110 views

Disable screen saver on secondary monitor

Is there a way to disable the screensaver from showing on my secondary display? I only want it on my primary display. Running 10.11.1 El Capitan
3
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0answers
561 views

Do retina screens get less bright after a few years?

I've had my MacBook Pro 15" Retina for two years (purchased summer 2014). The last half-year, I have increasingly found myself wanting to turn up the brightness because I find the screen too dark – ...