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I decided to plug in a 3rd monitor today and for some reason they´re all detected but only 2 work the other one goes to no signal and when i try to change the primary monitor another one goes no signal and the one that didn´t work comes back online when I look in the intel centrum it seems that one monitor then says that it is ´turned off´ in the system while it is turned on and has power. Does anyone know why this is happening? I got a intel uhd graphics 630 and it should be able to run 3 monitors at the same time and all the cables are plugged in nice and good
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Xybles, Thank you for posting in the Intel® Communities Support.
We will be more than glad to assist you with this matter.
In order for us to provide the most accurate assistance on this scenario, we just wanted to confirm a few details about your system:
Is this a new computer?
Were you able to ever connect 3 monitors on this specific machine before without showing the issue that you are describing?
Did you make any recent hardware/software changes that might cause this problem?
Does the problem happen at home or in the work environment?
Please attach the SSU report so we can verify further details about the components in your platform, check all the options in the report including the one that says "3rd party software logs":
https://www.intel.com/content/www/us/en/support/articles/000057926/memory-and-storage.html
Any questions, please let me know.
Regards,
Albert R.
Intel Customer Support Technician
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It seems there might be a graphics setup issue. Make sure your graphics drivers are updated. Try changing the connections or using different ports on your computer. Also, check your display settings to confirm if the third monitor is recognized and enabled correctly.
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Hello Xybles, Could you please provide the SSU report so we can further assist you with this matter? Check the link below for further description of the report:
https://www.intel.com/content/www/us/en/support/articles/000057926/memory-and-storage.html
Regards,
Albert R.
Intel Customer Support Technician
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Hello Xybles, I just wanted to check if you saw the information posted previously and if you need further assistance on this matter?
Regards,
Albert R.
Intel Customer Support Technician
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Hello Xybles, Since we have not heard back from you, we are closing the case, but if you have any additional questions, please post them on a new thread so we can further assist you with this matter.
Regards,
Albert R.
Intel Customer Support Technician

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