M4 Mini does HDR?

[antigravity83]

Plugging my M1 MacBook into my HDR monitor via HDMI results in terrible banding. Posts on the net suggest this is a common issue

Does the M4 Mac Mini have this problem?

Can you output HDR on the new Mac Minis?

 

[Beau Slim]

Sonoma M1 Air does HDR just fine to Dell 6K (DP or Thunderbolt) or LG 34" 5k2k (Thunderbolt). I have never tried HDMI with either. Some applications have strange issues with HDR, but VLC playing a local file always seems to work well.

 

[antigravity83]

MacOS 4k HDR suffers from noticeable color banding. Even in the interface (wallpaper for example)

Using a LG C2 4K OLED and I have to turn off HDR to get rid of the banding.

Quick google seems to suggest this is a common issue on older apple silicon chips so was wondering it was an issue with the new M4 also

 

[Adora]

I have only experience with a "4K" UHD (native Resolution 3840x2560) display on my M3 iMac.

It is depending on the refresh-rate and resolution if I can enable HDR at all when it's connected via DisplayPort 1.4 to a TB4 Dock and before with a USB-C cable, that claims to be "fully featured".

But somehow it worked only on Thunderbolt ports, directly or dock. Is DisplayPort is still integrated in Thunderbolt? standard USB-C 3.x Gen2 ports don't work at all they are either too slow with 10Gbit/s or don't include DisplayPort.
Maybe it's a real USB 4 cable with 20 Gbit/s.

In the beginning I used it with HDMI. It has even two connectors (2.0 and 2.1), but both didn't give me more than 60Hz. But HDR also worked there . Does HDMI even work with a higher refresh rate than 60Hz? The HDMI cable that came with one of my docks and is even labeled. Both other coonection methods can go up to 144Hz.

With connections I had no issue, when I enabled HDR. At least I thought that. I never used it for long.

But I don't know what banding means.

Maybe I have it too and don't recognize it. How can I find that out?