HDR requires HDMI 2.0 or DP 1.4. This board has neither.
Posts by smp
-
-
What motherboard?
-
That image was intended for Noumenon for troubleshooting his projector issue with his NUC11. The reason for tigerlake optimization flag is that I use it in my personal builds and I don't really have time to do a clean build with default gcc optimization flags.
-
It should boot on NUC11. It boots fine on my Tiger Lake box.
The image was built with -march=tigerlake gcc flag. It would probably be unbootable on non-tigerlake CPUs.
-
is there a way to force YCbCr 4:4:4 output?
This image will use YCbCr 4:4:4.
-
What's the point? YCbCr 4:4:4 is the same as RGB
Diff
Display Morediff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c b/drivers/gpu/drm/i915/display/intel_hdmi.c index 821411b..557bd91 100644 --- a/drivers/gpu/drm/i915/display/intel_hdmi.c +++ b/drivers/gpu/drm/i915/display/intel_hdmi.c @@ -2423,7 +2423,7 @@ int intel_hdmi_compute_config(struct intel_encoder *encoder, if (adjusted_mode->flags & DRM_MODE_FLAG_DBLSCAN) return -EINVAL; - pipe_config->output_format = INTEL_OUTPUT_FORMAT_RGB; + pipe_config->output_format = INTEL_OUTPUT_FORMAT_YCBCR444; pipe_config->has_hdmi_sink = intel_has_hdmi_sink(intel_hdmi, conn_state); -
Yes, but 4:2:0 is still only at 8-bit.
-
From JVC NX5 manual:
When the color space is RGB/YCbCr(4:4:4), only 8-bit input is supported.
^ There's your answer. You will have to use 8-bit for 4k/24Hz.
systemctl stop kodi
./proptest -M i915 -D /dev/dri/card0 308 connector 314 8
systemctl start kodi
try if 4K/24 now works
Upd: the manual actually refers to 4K 50/60Hz modes, so deep color should be supported with 4K/24. Try also 10-bit (./proptest -M i915 -D /dev/dri/card0 308 connector 314 10)
-
It seems that 4k23.98hz files won’t output video.
My best guess is that your projector does not like the 4K RGB 12-bit mode.
Try to reduce it to 10-bit. You can do that with libdrm proptest tool.
Copy proptest to /storage, then
chmod 755 proptest
./proptest
and post the output here
-
24hz 4:2:2 is supported though?
No. RGB 12-bit.
-
RGB 8bit,
On Intel hardware 4K 50/60Hz HDMI video modes will always be RGB 8-bit because Intel driver does not support YCbCr 4:2:2. Some type of dithering would be required.
the colorimetry is labelled sRGB instead of bt2020
Wrong colorimetry issue was discussed a few posts back. BT.2020 works with this unmerged PR. It will not be included in Kodi 20/LE 11.
-
This is needed for BT2020. It's not merged yet.
-
It should work. Try older nightlies, maybe something is broken for Jasper Lake in current Mesa 3D.
-
If you are able to compile your own LE image - TBS5922 driver should be rather trivial to port from TBS repo.
-
do you reckon this one will work?
I doubt it has an HDMI 2.0 chipset. Also, in the description it says:
"5.184 or 8.64 Gbit/s forward link channel supports high resolution displays with a single cable."
-
I presume I'd still get 4k/HDR
You will have to use an active DP to HDMI 2.0 converter.
-
-
Add i915.force_probe=56a1 to syslinux.cfg
