Posts by smp

**smp** · Intel true 10bits/HEVC/HDR support... ? **smp** March 12, 2021 at 8:35 PM

Does anyone here use a Gemini Lake box with a Samsung 4K TV (2019 or 2020 model)?

After experiencing some annoying HDMI issues with 4K modes (e.g. intermittent white dots after a mode change, with known good cables) I decided to poke around in Intel driver and found the problem. Apparently, my Samsung TV doesn't like Intel's implementation of HDMI Scrambling.

I disabled scrambling with a below patch and all issues are gone.

Diff

diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c b/drivers/gpu/drm/i915/display/intel_hdmi.c
index 2fa9ba3..b258e1d 100644
--- a/drivers/gpu/drm/i915/display/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
@@ -2549,7 +2549,7 @@ int intel_hdmi_compute_config(struct intel_encoder *encoder,
             pipe_config->hdmi_scrambling = true;
 
         if (pipe_config->port_clock > 340000) {
-            pipe_config->hdmi_scrambling = true;
+            pipe_config->hdmi_scrambling = false;
             pipe_config->hdmi_high_tmds_clock_ratio = true;
         }
     }

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**smp** · Intel true 10bits/HEVC/HDR support... ? **smp** March 11, 2021 at 1:31 PM

I hope X11 would be dropped after LE 10 is branched out. I feel like it is holding back the development of Generic x86.

**smp** · Intel true 10bits/HEVC/HDR support... ? **smp** March 10, 2021 at 7:20 PM

I don't understand what you mean by that. My builds are compiled from LE git master + HDR patches from lrusak's git repo + some minor changes to make it all compile and work.

**smp** · LE10 & deinterlacing in RPi4 **smp** March 10, 2021 at 4:12 PM

Deinterlacing is not implemented (yet) for DRM PRIME.

**smp** · Asus PN50 challenge **smp** March 9, 2021 at 12:06 AM

Quote from lrusak

You are using the wrong branch

I used this one. Is it the right one? HDR worked on Gemini Lake and (reportedly) on Tiger Lake. Didn't work on Athlon 200GE.

Quote from lrusak

Also, the AMD drivers (IMO) are some of the best.

Ok, but I can make a list of weird issues that are exclusive to AMD and not present on Intel.

Like this issue for example which I reported to AMD almost a year ago and it is still not fixed.

**smp** · Asus PN50 challenge **smp** March 8, 2021 at 9:58 PM

Quote from Deezle

Do you expect that the audio passthrough issues on Intel (e.g. NUC11PAHi)

The audio passthrough issue has been reported to Intel driver people but no one's in a hurry to fix it.

Quote from Deezle

May I ask you which machine you own yourself or plan to purchase?

I own an Asrock J4105B-ITX (Gemini Lake) board. I plan to upgrade it at some point to a Tiger Lake based mini-ITX board (most likely Celeron 6305 or Pentium Gold 7505) when they are available.

**smp** · Asus PN50 challenge **smp** March 8, 2021 at 9:07 PM

Quote from pletopia

My biggest concerns are does it do 10bit 4k HDR properly?

Current work-in-progress HDR code from lrusak's git repo (which I use for my LE builds) does not work on AMD. No idea when or if it will ever work.

But the biggest concern should be AMD's linux GPU driver quality, which is kinda crap. I encountered some nasty issues when testing LE on Athlon 200GE APU with Vega graphics.

The audio passthrough issues on Intel are nothing compared to general crappiness of AMD drivers.

**smp**

Quote from nvdias

Is there any plans for the Crazycat's driver with LibreELEC 10 ? Or TBS drivers ?

DVB Addons Update by CvH · Pull Request #5165 · LibreELEC/LibreELEC.tv · GitHub

I also posted a kernel patch for TBS 5520SE here.

**smp** · Playing dolby vision on the Minix u9-h **smp** February 24, 2021 at 7:20 PM

No dolby vision support in Linux.

**smp** · Playing dolby vision on the Minix u9-h **smp** February 24, 2021 at 6:06 PM

Quote from chrisssj2

Is there a way to get it running on the Minix u9-h?

No.

**smp** · Intel true 10bits/HEVC/HDR support... ? **smp** February 20, 2021 at 2:13 AM

Quote from luckylukz

It says RC1

It was compiled from yesterday's git master and is only a couple of minor commits behind.

**smp** · Intel true 10bits/HEVC/HDR support... ? **smp** February 19, 2021 at 9:29 PM

Quote from luckylukz

Would apreciate a build to test.

That's what I uploaded yesterday.

**smp** · Intel true 10bits/HEVC/HDR support... ? **smp** February 19, 2021 at 4:20 PM

.

**smp** · Intel true 10bits/HEVC/HDR support... ? **smp** February 19, 2021 at 2:32 AM

Quote from luckylukz

Just to clarify and remove confusion is this specifically for the Intel Iris X Graphics or will it also work for the Intel UHD Graphics in the i3 model.

All NUC11s use Tiger Lake-U SoC with the same GPU. The only difference is the number of enabled EUs (48 on i3, 80 on i5 and 96 on i7).

So yeah, it will work.

**smp** · Intel true 10bits/HEVC/HDR support... ? **smp** February 18, 2021 at 11:50 PM

Quote from Nekromantik

should it also work on nuc 11 Pro?

Buy it and tell us

I don't see why it wouldn't work.

**smp** · Intel true 10bits/HEVC/HDR support... ? **smp** February 18, 2021 at 11:39 PM

Quote from luckylukz

Confirmed HDR is working!

That's great news!

But keep in mind that HDR code is early and has some bugs.

For example, HDR mode sometimes does not switch off when you switch from HDR to SDR video.

Another bug I noticed - if you switch the TV off and then on again - HDR may not work anymore and Kodi must be restarted to fix this.

**smp** · Intel true 10bits/HEVC/HDR support... ? **smp** February 18, 2021 at 11:02 PM

luckylukz

Please try this:

https://www.dropbox.com/s/20aoopaqh4w5…57f.img.gz?dl=1

**smp** · Intel true 10bits/HEVC/HDR support... ? **smp** February 18, 2021 at 10:28 PM

Quote from luckylukz

Playing HDR video crashes libreelec and TV displays 'No Signal'

That's some progress at least

I will now do another build with some changes.