[Solved] USB C to HDMI Adapter Cable Not Working in 2022

March 11, 2022 4 min read 5 Comments

[Solved] USB C to HDMI Adapter Cable Not Working
Here, we summarize our USB-C to HDMI Adapter and USB-C to HDMI Cable issues back in 2018 - 2020. Also, collecting the problem still remains in the rest of the related products in the market.
 
I assume that you are facing one of these issues, you don’t need to try all the solutions; just work your way down the list until you get your problem solved.
 

1. Not Recognized, nothing shows up.
2. Recognized but Black Screen.
3. Distracting Screen Flicker.
4. Not 4K60Hz, 144Hz, as it claims.
5. Others (No sound from tv, feels hot to touch, cut Wifi signal, not hdr, drains battery fast, etc.)

P.s. All issues we collect from:
a - Product reviews on Amazon.com.
b - Reddit - r/UsbCHardware.
c - Apple, Samsung, and other top brands forum.

 

HDMI adapter not working - 1 

1. Not Recognized, nothing shows up.

What you should do first:

Make sure your USB-C port supplies DP Alt Mode.

There should be two possibles when your display cannot be recognized.
A. Your host device CAN NOT supply video out, which means your USB-C output CAN NOT provide native DisplayPort signals.
B. Your USB-C port can supply video out, however, there must be errors in the whole connection other than the USB-C port.
  
Situation A:
For example
Host Device: Samsung Galaxy A02s
Connection Device: Insignia TV
For the host device, Samsung Galaxy A02s got USB-C port but it only gets USB 2.0 protocol, which can not transfer video & audio signal through the USB-C port, which does not have DP Alt Mode.
That means, no matter which UBS-C to HDMI Adapter, or USB-C to HDMI Cables you use, you cannot stream things to TV from Samsung Galaxy A02s. 
 
Situation B:
For example
Host Device: MacBook Pro 16'' 2021
Connection Device: Projector Pro
It is 100% sure that all 4 USB-C ports of MacBook Pro 16'' 2021 supply DP Alt Mode, but there is still got chance that you can not use the USB-C to HDMI Adapter normally. Please confirm your UBS-C port function well, and the HDMI to HDMI cable works properly. If the above all performs well, you should consider changing the adapter.

 

Oh, yes, one more tip for MBP users . You have to charge MBP when you want to activate the clamshell mode, before closing your screen.

 

And for Windows Users, please make sure you've got the latest driver. (Or you can view the troubleshooting here.)

 

Go 👉 get uni USB C to HDMI Adapter/ USB C to HDMI Cable (support DP alt Mode)

 

2. Recognized but Black Screen.

What you should do first:

Make sure your USB-C device is all up to date (get the latest drivers).

This often happens when you use the adapter/cable for a while (3-12 months), or immediately appears after you upgrade the system; It most frequently appears with Windows users when upgrading to Windows 10/11.
 
For Windows users, if your USB-C to HDMI adapter is not working, the issue might be connected to the dedicated driver. So we recommend you update the USB to HDMI driver on the official website. Alternatively, recently installed Windows 10 updates can lead to problems due to random bugs. Well, at last, the problem might also be the hardware itself, which means the adapter itself.
 
And for the rest non-Win Users, there is still a chance that the system or the CPU causes the problem.
However, go and contact your devices manufacturer and the adapter provider will always get an answer.

 

flicking HDMI -3 

3. Distracting Screen Flicker.

What you should do first:

Tried a different cable/adapter.

Then Tried a USB-C DisplayPort cable (if you have DP port in your external display).

Well, actually chances of encountering this issue are way more than the rest of the problems. Some people just ignore this. However, there will be two reasons causing this happening.
A. The connection from USB-C to the display has errors. It might be the adapter went down, the HDMI to HDMI cable is not good quality, the HDMI cable length is over 15ft, or the display goes faulty on refreshing rate(even without any other connection), and there is also a slight chance that the host device (USB-C device) is not working well.
 
B. Other connections affected the display, besides USB-C to HDMI. Maybe the power output of the HDMI display causes unusual surge.
 
Some people might consider this issue as Compatibility faulty, things like different protocols created by whom.
However, I believe the most important thing is you need to figure this issue out, get rid of the flickering.
 
Just confirm directly with the USB-C device manufacturer this professional question.
Or trying uni quality HDMI to HDMI cable / uni USB C to HDMI Cable for directly connection. 

 

Not 4K 60Hz 

4. Not 4K60Hz, 144Hz, as it claims.

What you should do first:

· Make sure you have device that can output 4K60Hz;

· Make sure the adapter/cable can get to 4K60Hz,

· Make sure the input external display can support 4K60Hz.

Just like the barrel theory.
You have to make sure the entire connection meets the requirement if you want to obtain a complete functionality that contains input, output, and connectors.
 
Please always remember, to check 3 parts of the entire connection if you want to get the full function:
1. The output device supports the standard;
2. The connector/cable supports this standard;
3. Input devices support this standard;
 
And if you can make sure the entire chain is working perfectly, the last thing should be learning the correct adjustment steps.
 
 
 

5. Others (No sound from tv, feels hot to touch, cut Wifi signal, not hdr, drains battery fast, ect)

 What you should do first:
 Google the specific steps according to specific issue.
 
Or, wait for me, after I have done a full research within a week.

 

Hopefully you’ll find this post useful.
 
Please feel free to leave a comment below if you have any ideas or questions.
Thanks for reading!

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5 Responses

Ned
Ned

August 01, 2022

My case the usb c to HDMI works on my laptop so the adaptor is working. But on my Galaxy s9 it connects but like black screen.

WooDa
WooDa

July 20, 2022

Hey Jimmy,
Thanks for asking!
Well, first of all make sure you have all the latest drivers and double confirm the cable/ adapter works fine. Sometimes, that’s all it takes.

If you get through that and it still fails, then let’s look at some settings. Connect the cable/adapter to the computer and TV. Power up the computer, then the TV. Make sure the TV isn’t muted (sounds silly, but HDMI handshaking is a finicky thing).

Still not working? Navigate to Settings>System> Audio Output Mode “Use external speakers”. And check if the display needs to change the input source manually.

Still not working, you can definitely turn to the seller for help.

Jimmy Henderson
Jimmy Henderson

July 18, 2022

I get video but no audio connecting my laptop to my TV.

WooDa
WooDa

July 10, 2022

Hi Joji Piki Kolofo’ou, if you want to connect your phone to the tv, you should make sure your host device provide video out, which means the USB-C port must provide DP Alt Mode! (Alternate Mode is a feature in USB Type-C, allowing for transmission of video signal.)

View more details on how to connect phone to tv in here 👉 https://uniaccessories.com/blogs/blog/how-to-use-usb-c-to-hdmi-cable.

Joji Piki Kolofo'ou
Joji Piki Kolofo'ou

June 27, 2022

How to connect my phone to my tv

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