Mac external monitor resolution problem

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Sidebar Sidebar. Forums Laptops Laptop Tech Support. JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding. Status Not open for further replies. Previous Next Sort by votes. Oct 1, 4 0 4, 0. I'm a bit confused about using external monitors with my laptop. I want to buy a big external monitor to use with my 14" laptop, and have everything look cool.

I want a big screen so I can fit more stuff on it. However, it seems that's not really possible, because the resolution of my laptop screen is x, and when I plug it into an external monitor, that will also run at x?


So, I won't actually be able to fit more on the screen - everything will just be scaled-up proportionately. Am I right in that? Second question, how big can I go? Third question, is it possible for my laptop to output a higher resolution than x to an external monitor? For example, my photos are usually around x pixels.To start the conversation again, simply ask a new question.

Hi, I just bought a brand new 15 inch MacBook Pro.

mac external monitor resolution problem

First of all, the monitor works great in MacOS. But as soon as I boot into windows 10 under Bootcamp, I immediately get this very unstable connection. No matter what I do re-plug the cable, restart windows, turn monitor off and on, re-install drivers, etcthe screen is still black, only the MacBook pro's LCD will work.

Sometime if I try really hard and got lucky, the monitor will work for a while, just as good as in MacOS. But once I restart the computer, it lost connection again and the same thing just repeats. This thing is driving me crazy. I kinda give up using the monitor for bootcamp now, only use it when in MacOS. If anyone have the same or similar issue like mine, please share it.

I really want to be able to get the monitor working in Windows as I do plan to play some games on that bigger screen. Thank you! Posted on Jul 21, PM. Page content loaded. Jul 22, AM in response to rouging In response to rouging. Jul 22, AM. Jul 23, AM in response to kaz-k In response to kaz-k.

Thank you for the info. I spent some time dig into this issue and seems that using Display Port to connect the monitor into my laptop will just do the trick.

But again, this is a Mac, so maybe it just not intend to work smoothly with Windows, even it is a windows on a Mac hardware. Jul 23, AM. Communities Contact Support. Sign in Sign in Sign in corporate. Browse Search. Ask a question. User profile for user: rouging rouging. Notebooks Speciality level out of ten: 0.

More Less. All replies Drop Down menu. Loading page content. User profile for user: kaz-k kaz-k. Desktops Speciality level out of ten: 3. Jul 22, AM in response to rouging In response to rouging Hi, Following document could help your question a little. Reply Helpful Thread reply - more options Link to this Post.

mac external monitor resolution problem

Ask a question Reset.Many people use external displays with their Maceither to mirror their display to a larger screen, or to expand their screen area for additional productivity. As good as this sounds, sometimes problems can occur with external display that will require attention to get fixed. With a gist of some of the things that could have gone wrong, do any of these sound familiar to you? If so, follow along as we talk about some potential fixes to these issues.

It can also mean that there is a power issue, that the brightness is too low, or something else. Is the display supported? For many 4K displays, you need to be using a Mac with a graphics card powerful enough to push that many pixels. The general rule of thumb is that most modern Macs manufactured after will support such a high resolution but not all of them.

Apple has an online support document that lists all of the Macs that are compatible with 4K displays. Is your brightness turned all the way down?

Silly me — I just forgot to turn the brightness back up. If you live where Earthquakes are common, or you have rambunctious kids running around all the time, plugs are destined to work their way out of their sockets.

One of the things Apple recommends you try if you are using an Apple notebook, such as a MacBook, MacBook Air, or MacBook Pro is to connect the power adapter to give it additional power. A loose connection will keep a proper electrical connection from occurring and can cause issues with your external display. Are you using the right port?

Make sure your display s are plugged in to the correct port s. If possible, remove one of the adapters and avoid chaining them together.

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Does the display work with other connections? Try using another computer or another video source and see if the display works with that video connection. Is your video cable bad? Try using a known good video cable and see if the problem persists. Often times, the video cable connecting the external display to your Mac just needs to be replaced. Problems with display resolution will cause problems with your picture. With resolution issues, your picture may look blurry, or scaled incorrectly.

Typically when you plug an external display in to your Mac for mirroring, your Mac will automatically adjust its own display resolution to fit the external display. Not all resolutions translate well to others, and this will cause scaling issues that make some things look elongated or too tall. Try setting your display to use the default resolution for the display from the same preferences pane discussed above. If this ever happens to you, Apple suggests booting into Safe Mode on your Mac to see if the settings can be reset to default.

Sometimes, an updated version of macOS may include drivers pre-installed, so always make sure macOS is up to date too.Is your external display not working on macOS? Try out these tricks below to get things back online.

Any tech expert knows that dumb mistakes are as frustrating as they are ubiquitous. Restart your Maccheck physical connections, reseat cables. Is the brightness on your display turned all the way down?

Check for those kinds of issues. They can often lead you astray. Take the USB-cable-in-Ethernet-port problem. The cable can look perfectly plugged in at a glance, but unless you remove the cable and try to plug it back in, you may not notice your error.

Do you know that your Mac supports this monitor? Displays are not a static world.

mac external monitor resolution problem

Their standards are constantly tweaked and updated to include new features demanded by consumers and professionals. The most popular display connectors have multiple different versions, all of which can look the same from the outside. Only the newest cable versions can support the newest features.

They include simple computer chips that power their newest capabilities. If your monitor turns on and gets a signal, but the picture looks bad, the display version is a good thing to check. HDMI is on revision 2. USB-C is the worst: the cables can look identical but have completely different capabilities. DisplayPort 1. Also, you should avoid chaining video adapters together. Apple notes that doing this with one or multiple external displays can cause problems. Remove one of the adapters and see whether the display works.

Select the highest available option, typically at the bottom of the scrolling list. Display resolution and refresh rate can also be limited thanks to display connectors. VGA, for example, can only support a maximum display size of x Fit this by switching to a different connection standard.

The more-common HDMI 1. You can check these standards before buying a monitor. Your Mac hardware also plays a part. The higher-end devices with discrete GPU chips can drive the most pixels, while something like a MacBook would be far less capable, even though they could theoretically connect to the same display with the same cable. If one monitor displays significantly different colors than the other, you can use color calibration tools to fix the problem. Click Calibrate to start the on-screen calibration process.

Follow the instructions to create a new calibration from your display. Your email address will not be published. Notify me of follow-up comments by email. Notify me of new posts by email. Leave a Reply Cancel reply Your email address will not be published.OS updates are a good thing. They bring newer and better features to your device and in some cases, can improve its performance and longevity by fixing past issues.

But sometimes, these updates can create new issues and they can cause serious headaches. MacBook screen flickering is one such issue and we are going to tackle it in this article.

We are going to take a look at what this issue looks like. This is issue was first reported on High Sierra There have been updates to fix this but they can crop up while using certain programs like terminal, for example. The issue manifested itself in different ways and could make the computer unusable in some cases. Take a look at the picture below to get an idea of how bad it can get. There were solutions like changing the screen resolution but they were proven to be a temporary fix.

mac external monitor resolution problem

We have a list of methods you can try out to fix this issue. These are the 7 best solutions at your disposal to fix your MacBook. For that, skip to the last method. Have you tried turning it off and on again? Since the MacBook screen flickering is a software-related issue, you should definitely try this at first.

If you are a MacBook Pro user, then you should try disabling the Automatic graphics switching option. A large number of MacBook screen flickering issue cropped up while using Chromium or Firefox. This is because of the incompatibility with the OS. Uninstall it completely and restart your device to check if it worked. After the problems you might be facing after the last update, we know it can cause some reluctance.

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It can fix the screen flickering issue. There are two ways to update your MacBook:. It is pretty simple and the MacBook lets you easily do this.

It is extremely important as it is responsible for Power button presses, thermal management, battery management, etc. However, things can go wrong and resetting the SMC can be helpful. You can choose the method based on whether your MacBook has a non-removable battery or not.

If the MacBook screen still flickers after all of the above steps, then there is a good chance that this is a hardware issue. To check, you can connect your computer to an external display and check if the issue still persists. Hope you find this article helpful. We have listed all the possible solutions you can use to fix the MacBook screen flickering issue. If you have any doubts or suggestions, please let us know in the comments section down below and we will get back to you shortly.

I am deeply invested into Technology and for that reason, I love helping people Fix basic problems.

Macbook Screen Flickering – 7 Quick Ways to Fix it [2020]

You will see me write about iPhone and Mac on this site. Your email address will not be published. Leave a Reply Cancel reply Your email address will not be published.To start the conversation again, simply ask a new question. As I haven't found much info on using a 12" MacBook with external monitors but have found some problems I thought I would post my experiences here for the benefit of other searchers:.

After updating to El Capitan version VIDEO: I am only able to get a x scaled resolution to fill the screen, which is a little blurry but fine for desktop tasks - selecting scaled x or "best resolution for this monitor" results in a windowed appearance, with black bars to the right and left. I have not as yet found a solution to achieve ultrawide at the native resolution but would appreciate one. Full video HD YouTube is generally good, though gets a little choppy now and then.

AUDIO: Holding Option and clicking on the speaker icon in the Menu bar reveals selectable option to output audio to the device monitor. On this monitor, there appears to be an issue receiving the signal from the Macbook when another device is plugged into another port. In my case, a PC plugged in to the DisplayPort would "shut out" the Mac audio signal but ONLY if the PC was outputting audio via external speakers, not the monitor a lot of trial and error to discover this.

But having an external speaker hooked up via the pc mobo's 3. Something going on through the DP connection perhaps. This enables the Macbook to drive a 4K monitor at 30Hz, which is still a little laggy, but workable enough to be productive for word processing, surfing, etc.

Posted on May 4, PM. Page content loaded.

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May 23, AM. I am experiencing occasionally flickering on my external monitor with my Macbook 12 inch, throughout the day every few hours. Reading your info, I took heart that switching to MHL connection instead might solve the problem. USB 3.

External Display Not Working on macOS? Here’s How to Fix It

But the monitor does not leave sleep mode and does not get detected. Any advice? How did you do that? Jun 2, PM. I have exactly the same problem, but I'm certain it's software related since I'm also running Windows 10 in bootcamp and without the black screens.

Sep 1, AM. Sep 6, AM in response to ricriley In response to ricriley. Sep 6, AM. I am confused as to how to connect to the MHL port.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. Ask Different is a question and answer site for power users of Apple hardware and software.

It only takes a minute to sign up. The monitor's optimum resolution is x 60Hz and RDM shows this as an option. However, when I try to use that resolution, my screen looks like this which is clearly not right it looks impossibly pixellated and really hurts my eyes, you can barely see anything on the screen.

My monitor and adaptor can display x so that would appear to not be the case here. The options for the resolution in Displays all work perfectly various ones from x up to x when Alt-Scaled but then it jumps up to x How can I add x to this list, as presumably that would display clearly?

Otherwise, you have a great choice of software for that, like switchResX :. Why hassling with Apple's inbuilt screen settings, when there is so much more to get and much easier, too? With SwitchResX you get back control on your screen — or screens even! There are plenty of inbuilt options Windows evidently could read the data just fine, which is why it worked perfectly every time. Where Apple don't develop plug-and-play drivers for monitors I assume and hadn't added a profile for mine, it couldn't recognise it.

In the end, it was a relatively simple fix. Here are the steps I followed some very basic knowledge of Terminal is necessary for the second half, it's mostly common sense though. If your EDID data isn't being read at all by anything, you'll need to either use another monitor that broken one won't ever work properly or have the defective one replaced etc. I don't have enough points to add comments, but I just had the same issue and found the reply by Dan Grove extremely helpful.

This reply is in regard with the step 2 of his proposed solution. I've spent the last 4 hours at least fixing that issue on macOS Sierra. Now, following Dan Grove list of steps see his post aboveI would bring some clarifications as follow:. Step 3 — For those who don't know what Hex is, below is a screenshot. You will have to remove the surrounding parts highlighted in red to only keep the Hex part highlighted in green.

You don't necessarily need to have the 3 boxes ticked, just click on Parse Edid and check if the information on the right reflect what your screen device should be — e. Step 4 — This is the tricky part which got me confused.

The tutorial is asking for you to output the result of the following Terminal command in a text file ioreg -lw0and search for various strings within the said file.

The tutorial asks you to look for the IODisplayEDID string but my external screen did not have any in the ioreg output which is certainly why is was not working.

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