Posts by Nekromantik

Quote from lejose

smp - forgive me if this has been beaten down before - but it is pretty hard to find information about the subject online. Your build, would it work on a NUC6CAYB to enable HDR output ?

The NUC6CAYB has a Celeron J3455 with Intel HD Graphics 500 and :

• HDMI 2.0 (4K @ 60 Hz) with HDMI CEC via MegaChips MCDP2800-BCT DisplayPort 1.2a to HDMI 2.0 Level Shifter/Protocol Converter

If memory serves me well it has the same LS-PCON as the newer generation NUC's have - tho I'm uncertain if the SoC can even support HDR.

Nope only Gemini Lake and newer supports it with these builds.

i think drivers just need to be more mature hopefully it happens during the LE 10 release

Quote from heitbaum

Hardware name: Intel(R) Client Systems NUC11PAHi7/NUC11PABi7, BIOS PATGL357.0037.2021.0106.1527 01/06/2021 is running LibreELEC LE10,

some video improvements will be required... but playback is mostly fine

Do you mean there is issues with normal video playback on 11 Pro NUCs?

should it also work on nuc 11 Pro?

Quote from luckylukz

Confirmed HDR is working!

wow!

well done smp

Quote from smp

5.10.16

thanks

hope luckylukz brings good news about new build!

smp does your builds use kernel version 5.9+?

we know hardware is capable as since Gemnini Lake Intel supports HDR in Windows

so its just Linux which cant do it properly with DP to HDMI. Maybe the patches used for earlier NUCs need to be updated.

Quote from smp

I have no means to check why it does not work. It does look like PCON may be an issue, but it's all speculation at this point.

We need to wait for hardware with a native HDMI port to make any conclusions.

As soon as consumer Mini-ITX Tiger Lake boards are available I will buy one of those.

ok well this saves me wasting money on nuc11

wonder if its due to the new gfx chip on the i5 and i7s. maybe you need updated driver.

Quote from smp

Thanks to @luckylukz it's now confirmed that NUC11PA does indeed use a DP->HDMI protocol converter.

The driver detects 5 available connectors: DP-1, DP-2, DP-3, DP-4, HDMI-A-1.

"HDMI-A-1" is a native HDMI but it is not active when the TV is connected to a NUC's HDMI port. DP-3 is actually active which means that a PCON is used.

Code

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Display More

will you need to wait to see if they patch it in kernel?

Quote from smp

Not yet. I try to figure out if it does have a PCON chip. NUC documentation says it does. But it does not make sense because Tiger Lake-U has a native HDMI 2.0 controller.

ok

hope the person with it can supply you with logs etc

i think it does have p con as intel board diagrams not wrong. Gemini lake NUC board diagram shows no LSPCON and HDMI direct to CPU but all others have it in diagrams

Quote from smp

A user reported that HDR does not work with my build on NUC11PA.

do you know why?

Quote from smp

There is no HDR support in Linux for legacy LSPCON chips. Patches exist but they have not been merged (yet).

PCON DP 1.4 -> HDMI 2.1 is already properly supported. I see no reason why there would be an issue with HDR.

Ah ok

The new NUCs dont have HDMI 2.1 though only 2.0a

Quote from smp

It will probably work fine, support in Linux is already there.

hmm so far only the people with gemni lake nucs got HDR working without bitstream audio. unless I missed it and people with NUC8 or 9 have these builds working with HDR?

So NUC11 Pro still has PCON chip but connecting to DP1.4a.

As the LSPCON was the reason why the other NUCs cant do HDR on LE properly, does this newer version with DP1.4 change that or will we still need the patches?

Quote from smp

They should work but no one tested it yet.

ok thanks

if I buy it I will test

Quote from smp

Panther Canyon NUCs use Intel Tiger Lake SoC.

Will your builds with HDR work on them if they have native HDMI?

Quote from smp

All Tiger Lake chips have the same (Gen12) GPU. The difference is only a number of enabled EUs (48 on lower end Celeron 6305).

So Xe is still same Intel Iris but just more EUs?