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input frequency is not supported error message

Cintiq and Cintiq Pro
cardio01
Posts: 3
Joined: Tue 27. Dec 2016, 11:08

input frequency is not supported error message

Postby cardio01 » Thu 18. Apr 2019, 16:36

Hi, I have a new Mac Mini 2018 that I connected to a Cintiq pro24 as a primary monitor using the HDMI and USB port. (I heard that this would be the best option, because connecting with usb-c cable would cause the USB and SD-slot on the Cintiq to operate on slow USB-2 speed). After every 3-4x when I boot the mac mini I get an 'input frequency is not supported' error message on the display. Unplugging and replugging the HDMI cable does not help to solve the problem. The only thing I can do is to do a hard reset on my Mac mini, which causes the Mac to start in recovery mode, asking questions if I forgot my login password or if my keyboard doesn't work.
Did anyone else had this problem, and a solution for it?

wacom5
Posts: 681
Joined: Tue 8. Aug 2017, 14:35

Re: input frequency is not supported error message

Postby wacom5 » Tue 23. Apr 2019, 07:59

Hello.
I have not seen this message before. To clarify, is this message is coming from the Cintiq Pro 24 (same as "No Input Signal" when you power the device without any video cable attached)?
Do you see the same error message when using USB-C or Mini DisplayPort?
Have you checked the steps here: https://support.apple.com/en-ke/HT201177 ?

cardio01
Posts: 3
Joined: Tue 27. Dec 2016, 11:08

Re: input frequency is not supported error message

Postby cardio01 » Tue 23. Apr 2019, 08:28

This message is indeed coming from the display. I found out that if I connect over usb-c it works again, even when I disconnect the usb-c cable afterwards. However if I turn the computer off and restart It, I can get the error message again when I connect only using the HDMI cable

wacom5
Posts: 681
Joined: Tue 8. Aug 2017, 14:35

Re: input frequency is not supported error message

Postby wacom5 » Wed 24. Apr 2019, 08:05

According to your Mac's specifications, the HDMI signal Output is a standard 60Hz which the Cintiq supports for sure. I suspect that the HDMI signal is the issue and most likely this comes from the graphics card that is not outputting the signal correctly.
Have you tried the steps in the link I shared in my previous post? I would also check with Apple directly.

cardio01
Posts: 3
Joined: Tue 27. Dec 2016, 11:08

Re: input frequency is not supported error message

Postby cardio01 » Thu 25. Apr 2019, 07:58

Yes, I can get the error message disappear if I press the F1 orF2 key to adjust the brightness settings of the screen. Thanks for your answer.

wacom5
Posts: 681
Joined: Tue 8. Aug 2017, 14:35

Re: input frequency is not supported error message

Postby wacom5 » Thu 25. Apr 2019, 14:39

That's not the solution I was expecting but I am happy that works. Thank you for letting us know.


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