Mini DVI to HDMI cable allows the video signal from a mini HDMI equipped device to. Mini DVI to HDMI Adapter Cable. 1 x Mini DVI to HDMI Adapter (this is after market product, not original Apple). Add an external display to an Apple MacBook or iMac computer, creating a simple. Mini DisplayPort to HDMI 6-foot Cable can seamlessly connect Mini DisplayPort or Thunderbolt™based Macs to any HDMI display. Our Mini Display Port to HDMI cable supports full HD output in 1080p with audio on most of today's MacBooks, MacBook Pro, MacBook Air, iMac, Mac mini or Mac Pro computers.

One of the ways to connect your Mac to an external display is by using a High-Definition Multimedia Interface or HDMI cable. You can connect the HDMI cable to the HDMI port on your Mac to a second monitor or TV. Whether you want to use a second screen or you want to export full audio and video display on your TV, connecting your devices is a lot easier with HDMI. Some Mac models, such as the Mac mini, also rely on HDMI to connect the computer to the display.

But with the release of macOS Catalina, a lot of Mac users using HDMI connection reported encountering various problems after the upgrade. Several users reported getting a black screen after installing the new version of macOS, even with the monitor still turned on. The display just turns black (or dark green in some cases) and eventually shuts down.

Other users, on the other hand, got a No Signal error message instead of the black screen. There are also some cases where the external display just blinks randomly when connected to a Mac running macOS Catalina.

Mac users who are using HDMI for their second monitor are less affected compared to Mac mini users who use HDMI as their main connection. However, this doesn’t deny the fact that display problems such as these can cause a lot of inconvenience and annoyance.

This guide will show you what to do if your Mac shows no HDMI signal after Catalina update.

How to Fix HDMI Signal After Catalina Update

There is no explanation yet why the macOS Catalina update caused the HDMI to stop working, and it will probably take a while for Apple to release an update that addresses this issue. If you’re using your Mac for study or work, finding a solution to this problem is a priority because you can’t do anything with a black screen.

Before you try the solutions listed below, try some of these emergency steps first to see if they work.

1. Restart your Mac. If you’re in the middle of installation, cancel it first before restarting. Once your Mac has restarted, resume the upgrade and see if you encounter further issues.
2. Make sure that the HDMI and power cables are connected properly.
3. Use a different HDMI cable. In the case that your HDMI cable is damaged, replacing it with a new one should resolve the issue.
4. Use a different port. Try to use a different cable to connect your Mac to your display, if possible. For example, you can use a USB-C to HDMI cable for some Mac models.
5. Optimize your Mac using Outbyte MacRepair to delete possible corrupted files causing the issue.

If the above steps don’t work, try the solutions below.

1. Restart Your Display.

Restarting your TV, external monitor, or other HDMI devices should be your first step in fixing this issue. To do this:

1. Turn off your HDMI display while your Mac is turned on.
2. Disconnect the HDMI cable from your Mac, then plug it back again.
3. Turn on your HDMI display again.

If the problem is caused by a minor glitch, restarting your HDMI device should do the trick. If not, try the other fixes below.

2. Enable Your Display Driver.

If you’re using an HDMI monitor or a TV as an external display and you encounter the black screen issue, changing your Mac’s privacy settings should take care of the issue. To do this:

1. Click on the Apple logo, then choose System Preferences.
2. Click on Security & Privacy, then click Screen Recording from the left menu.
3. Tick off Enable the Display Driver in the right panel.

Changing your screen resolution and refresh rate parameters should help. Go to the Apple menu > System Preferences > Display and choose the resolution that you want.

3. Turn Off the HDMI Ultra HD Color Feature

HDMI Deep Color is responsible for creating a more realistic and smooth rendering of an image on the screen. However, there have been reports that this feature causes flickering and other screen problems when turned on. So if your external display has this feature, try turning off to see if the problem goes away.

4. Reset Your Mac’s SMC.

The System Management Controller or SMC manages a lot of aspects of your Mac, including the display. So if you’re having screen issues, such as the HDMI not working on Mac after Catalina update, resetting the SMC might help.

To reset the SMC, follow the steps below.

1. Shut down your Mac.
2. Hold the left Shift + Control + Option keys together, then press and hold the Power button down.
3. Wait for 10 seconds, then let go.
4. Turn on your Mac again.

If you’re using an iMac or a Mac Mini, here are the steps to reset the SMC:

1. Shut down your device.
2. Unplug the power cable.
3. Wait for at least 15 seconds.
4. Plug the power cable back in.
5. Turn on your Mac.

Once your Mac’s SMC has been reset, check if you’re still getting screen problems on macOS Catalina.

5. Reset NVRAM.

If resetting the SMC does not fix your problem, you should try resetting the NVRAM this time. To do this:

1. Shut down your Mac.
2. Turn it back on, then immediately press and hold this key combination: Option + Command + P + R.
3. Wait for at least 20 seconds, during which your device might appear to restart.
4. Release the keys when you hear the second startup sound or when you see the Apple logo appear and disappear for the second time.

Hdmi Cable Mac To Tv

Summary

The release of macOS Catalina has also introduced a lot of bugs and issues that Apple needs to fix, including the HDMI signal problem on external displays. Rolling back to macOS Mojave is not an option because this method does not fix the issue, according to user reports. So instead of waiting for an official fix from Apple, you might want to give the methods above a try.

connecting it to external displays via HDMI adapters, the MacBook Pro can perform all these without breaking a sweat.If you plan to hook your Macbook Pro to an external monitor, then it's best that you invest in a good HDMI adapter. Whether you work from home or office, an HDMI adapter can make the plug and play seamless. So we have compiled some of the best HDMI adapters out there. These highly-reviewed products are durable and execute the job seamlessly.All you need to do is find the one which is compatible with your variant of Mac, and you will be sorted.
So, let's get going.

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1. QGeeM USB C to HDMI Adapter 4K Cable

Variant: MacBook Pro 2018/2017Buy

QGeeM USB C to HDMI Adapter 4K Cable

The QGeeM HDMI adapter may not be a popular name, but considering the highly favoring reviews on this one, you can rest assured about its quality and durability. It's a simple USB-C to HDMI (HDMI mini) cable that can run up to 4K@30Hz resolution. It's a plug-and-play tool, which means no hassle over the installation. Just make sure that you have picked the right HDMI input source, and you will be sorted.

The build quality of the QGeeM USB C to HDMI Adapter is solid. While the nylon sleeving makes sure that it can withstand daily wear and tear, the use of aluminum alloy shells makes sure that the adapter doesn't rust easily.When connected, the picture loads instantly. You won't find any flickering; neither does it need any adjustments. This adapter amasses some four thousand reviews on Amazon, with people loving it for quality, durability, and value-for-money proposition.

2. Uni USB C to HDMI Adapter 4K

Variant: MacBook Pro 16' (2017-2019), MacBook (2015-2019)Buy

Uni USB C to HDMI Adapter 4K

If you own one of the newer Macbooks, you might want to try out the Uni USB C to HDMI 4K Adapter. Similar to the one above, it's a simple plug-and-play adapter which can offer 4K resolution at 60Hz. And, the 60Hz support translates into seamless videos. That's not the end of the story. Since it's an HDMI cable meant for the newer MacBook Pros, you also get HDCP 2.2 compliant ports. And yeah, this adapter carries an HDMI 2.0 ports.

The build quality is quite good. The USB-C connector has a neat grip on the sides, thus making it easier to well, grip. At the same time, this minor detail also helps in prolonging its life.Similar to the QGeeM's unit, you will find braided cables. Both these combine to give you a durable product. Picture-wise, the quality is great. There's no latency or flickering issue. And the 4.4-star user rating proves this claim right.This mini HDMI cable has raked around three thousand reviews with over 76% positive reviews. People seem to love for its compact form factor and picture quality.

3. AmazonBasics Mini Thunderbolt to HDMI Adapter

Variant: MacBook Pro (2011-2015)Buy

AmazonBasics Mini Thunderbolt to HDMI Adapter

If you're in the market looking for a basic and inexpensive HDMI adapter, the AmazonBasics HDMI adapter is your best bet. I say basic because it doesn't have support for 4K resolutions. Instead, it can support displays up to 1920x1200 resolution, and if you connect your Mac to a monitor sparingly, this is the apt one for you.

Unlike the ones above, this one comes with the traditional Thunderbolt port, usually found on MacBook Pros launched from 2011 through 2015.There are no fancy features like alloy covers or braided cables. Instead, you will find a slightly hefty device made of plastic. However, let not the looks deceive you for this device works like a charm. Plus, it's small, and portable form factor adds to the experience.This product has around 74% positive reviews.

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4. Mokin USB C Hub HDMI Adapter for MacBook Pro

Variant: MacBook Pro (2017-2019)Buy

Mokin USB C Hub HDMI Adapter for MacBook Pro

There's no denying the advantage that a USB-C adapter has over individual adapters. The one by Mokin not only lets you extend your MacBook Pro's display to 4K display on a monitor (or TV), but it also gives you two extra USB 3.0 ports in addition to an SD card reader. The adapter is compact and travel-friendly. The sleek look complements the design of Macs.

And well, the multiple ports mean you can use it for multiple purposes. So from external mouse to keyboards, you can use them all, along with using a second screen for your MacBook Pro.The product works as expected. The only thing you have to keep in mind is that it supports a refresh rate of 30Hz.

5. Purgo USB C Adapter

Variant: MacBook Pro (2016-2019)Buy

Purgo USB C Adapter

If you are looking for the dual combination of HDMI ports and Thunderbolt 3 ports, the Purgo USB C Adapter will be a good buy. This slender adapter connects to your MacBook Pro via the two USB C ports on the left side and brings home a plethora of connectivity options. For starters, there are two Thunderbolt 3 ports, 3 USB C ports, and an HDMI mini port.

Plus, with Power Delivery, you can charge your MacBook Pro at the required speed. As per the makers, this USB adapter can supply up to 100W of power delivery, which is apt for both the 13-inch and 15-inch MacBook Pro (61W and 87W, respectively).This adapter sits snug with your laptop, and unless you have a cover on, it should not create much of an issue. And its lightweight nature is the cherry on top.And with the HDMI port, you can expect great picture quality to be relayed to your monitor.So far, the Purgo USB C Adapter has amassed pretty rave reviews. This device works exceptionally well, and the 4.4-star rating is the testament to that.

6. Satechi USB-C Dual 4K HDMI Adapter

Variant: MacBook Pro (2017-2019)Buy

Satechi USB-C Dual 4K HDMI Adapter

Last but not least, we have the Satechi USB-C Dual HDMI Adapter. It packs a simple design, with two HDMI ports at one end and two USB-C ports at the other. And that's not the end of the story. The makers claim that this adapter can handle two 4K displays at 60Hz.

Plus, it's very simple to set it up, and it can work without any flickering or loss in picture quality. There's also a USB-C Power Delivery port at the side, which lets you keep your Mac powered (60W).The reviews for this adapter has been great so far, with users rating it above 90%. But on the downside, it's a little on the expensive side.

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So, these were some of the best HDMI adapters for MacBook Pros. The best thing about them is that they are compact and nicely complement the looks and color of your laptop.

Next up:The Apple AirPods Pro is a premium but expensive pair of earphones and you wouldn't want anything to happen to them. Read the next article to find out the best leather cases for them.

The above article may contain affiliate links which help support Guiding Tech. However, it does not affect our editorial integrity. The content remains unbiased and authentic.Also See#accessories

Mini Dvi Cable For Macbook Pro

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