2018 MacMini: can't get HDMI 4K @ 60Hz

[CC88]

Dear all,

I saw my monitor has HDMI 2.0. I have already connected it via thunderbolt but I wanna test my hdmi connection to free up a thunderbolt port for use it with an external SSD (I have already all the other three ports connected to multiple raid).

Unfortunately I can get only 4K@30Hz.... although my monitor can support 60Hz via HDMI.

Any hints on this?

Thanks a lot.

 

[chrfr]

Dear all,

I saw my monitor has HDMI 2.0. I have already connected it via thunderbolt but I wanna test my hdmi connection to free up a thunderbolt port for use it with an external SSD (I have already all the other three ports connected to multiple raid).

Unfortunately I can get only 4K@30Hz.... although my monitor can support 60Hz via HDMI.

Any hints on this?

Thanks a lot.

With the LG displays you need to go into the menus and turn on "HDMI ULTRA HD Deep Color" to get 4k/60 over HDMI.

 

[CC88]

With the LG displays you need to go into the menus and turn on "HDMI ULTRA HD Deep Color" to get 4k/60 over HDMI.

Thank you very much. I didn't know about this and it was off. But once activated I have 30Hz via HDMI anyway.

 

[chrfr]

Thank you very much. I didn't know about this and it was off. But once activated I have 30Hz via HDMI anyway.

You may need a different cable then.

 

[CC88]

You may need a different cable then.

thank you very much.
I’m using the one below from Amazon now. Do you think it’s the wrong one?

Amazon Basics Cavo Ultra HD HDMI 2.0 ad alta velocità, formati 3D supportati, con Audio Return Channel, 1,8 m, Nero

Amazon Basics offre articoli di uso quotidiano per la casa, l'ufficio, il giardino e molto altro ancora. La selezione Amazon Basics è in costante crescita ed è progettata per diventare una scelta conveniente per le tue necessità quotidiane di prodotti elettronici e articoli per la vita di tutti i...

www.amazon.it

 

[macdos]

It's a 30 Hz cable.

 

[chrfr]

It's a 30 Hz cable.

thank you very much.
I’m using the one below from Amazon now. Do you think it’s the wrong one?

Amazon Basics Cavo Ultra HD HDMI 2.0 ad alta velocità, formati 3D supportati, con Audio Return Channel, 1,8 m, Nero

Amazon Basics offre articoli di uso quotidiano per la casa, l'ufficio, il giardino e molto altro ancora. La selezione Amazon Basics è in costante crescita ed è progettata per diventare una scelta conveniente per le tue necessità quotidiane di prodotti elettronici e articoli per la vita di tutti i...

www.amazon.it

This is apparently an HDMI 2.0 cable which definitely should work to provide 60Hz. Regardless, it’s the only unknown in a system so it may be worth trying a different cable.

 

[macdos]

This is apparently an HDMI 2.0 cable which definitely should work to provide 60Hz. Regardless, it’s the only unknown in a system so it may be worth trying a different cable.

Product description:

• Meets the latest HDMI standards (4K Video at 30 Hz, 2160p, 48 bit/px color depth) that supports bandwidth up to 18Gbps and backwards compatible with earlier versions

 

[CC88]

Product description:

• Meets the latest HDMI standards (4K Video at 30 Hz, 2160p, 48 bit/px color depth) that supports bandwidth up to 18Gbps and backwards compatible with earlier versions

Thank you very much. Thought it was a 60Hz capable one due to the description below (italian version):

• Compatibile con lo standard HDMI (formato video 4K a 60 Hz, 2160p, 48 bit/px di profondità di colore); supporta una larghezza di banda fino a 18 Gb/s ed è retro-compatibile con le versioni precedenti

And the table provided:

 

[HDFan]

You cannot rely on manufacturers' statements. Make sure it is a certified cable. The first HDMI 2.1 cables certified for 48 Gbps have started appearing. This is overkill for your needs, but they are not that expensive and you know they have passed the most rigid certification tests. The key thing to look for is the "ultra certified cable" logo and hologram on the box. Then scan with the Ultra HDMI certification app which will verify that the cable is certified.

This a U.S. site, but I assume the product is available in your location. ~$20 for a 6.5 foot cable:

Zeskit Certified 2.1 8K HDMI Cable 48Gbps 4K120Hz Compatible with Soundbar eARC HDR10 VRR Dolby Vision Atmos HDCP 2.2 & 2.3 Gaming PS5 Xbox Series X Apple TV Roku Monitor (Ultra High Speed Maya 6ft)

The Zeskit MAYA series Ultra High Speed HDMI cables comply with stringent specifications designed to ensure support for high resolution video modes such as 4Kp50/60/100/120 and 8Kp50/60 as well as new features such as eARC and VRR. The cables exceed the requirements of the latest international EM...

www.amazon.com

Play close attention to the 2nd image "Ultra Certified Cable", Ultra High Speed. This is what you are looking for.

 

[xylitol]

Yes, a non-certified cable is a hit or a miss. Buy at least a Premium High Speed cable:

Premium High Speed HDMI® Cable

Premium HDMI Cable Certification Program, HDMI cables for their 4K/UltraHD products that may include features such as 4K@60Hz, BT.2020 and HDR. Trust the cable with the label; HDMI 2.1b

www.hdmi.org

 

[CC88]

You cannot rely on manufacturers' statements. Make sure it is a certified cable. The first HDMI 2.1 cables certified for 48 Gbps have started appearing. This is overkill for your needs, but they are not that expensive and you know they have passed the most rigid certification tests. The key thing to look for is the "ultra certified cable" logo and hologram on the box. Then scan with the Ultra HDMI certification app which will verify that the cable is certified.

This a U.S. site, but I assume the product is available in your location. ~$20 for a 6.5 foot cable:

Zeskit Certified 2.1 8K HDMI Cable 48Gbps 4K120Hz Compatible with Soundbar eARC HDR10 VRR Dolby Vision Atmos HDCP 2.2 & 2.3 Gaming PS5 Xbox Series X Apple TV Roku Monitor (Ultra High Speed Maya 6ft)

The Zeskit MAYA series Ultra High Speed HDMI cables comply with stringent specifications designed to ensure support for high resolution video modes such as 4Kp50/60/100/120 and 8Kp50/60 as well as new features such as eARC and VRR. The cables exceed the requirements of the latest international EM...

www.amazon.com

Play close attention to the 2nd image "Ultra Certified Cable", Ultra High Speed. This is what you are looking for.

Thank you for your effort helping me.