I attached a kernel patch that should allow you to build LE image with TBS 5230 driver.
1. Set up LibreELEC build system.
2. Copy the patch to /packages/linux/patches/default
3. Edit /projects/Generic/linux/linux.x86_64.conf. Add the line
CONFIG_DVB_USB_TBS5230=m
4. Build the image.
My initial testing of OpenGL GBM x86 image looks good.
I PR'd a Kodi fix for HDR passthrough on OpenGL. Hopefully, it would be merged at some point.
It was not possible to build OpenGL without X11. I'm not sure if anything changed now.
Also, current Kodi master does not support HDR passthrough with OpenGL.
Finding a way to reproduce this "offline", without the need of the DVB hardware would be a good start. I have a sample HotBird UHD .ts file but I have no idea how to make it fail since it plays fine in file mode.
They suppossed to have same kernel (drivers).
No, they are not.
It works correctly with some ARM box (Coreelec) in the same AVR. So what gives?
CE does not use 12-bit for 4K/24. Intel does.
LE does not force full RGB. It is set by Intel driver in kernel.
What about our GPUs (via modetest), and Kodi itself (via the limited color range option)?
Forcing RGB full/limited is only needed in some special cases when you know what you are doing.
Kodi's color range setting seems broken. Has an effect only on GUI, at least on Generic.
So Lanczos3 optimized performs better on Windows? It's quite possible that Windows GPU driver performs better than Mesa driver on that ancient Sandy Bridge iGPU.
You can also try Generic-Legacy LE image and Generic LE 13 nightly, maybe you'll get better results.
Select a different scaling method, eg. Bilinear
the issue on the intel gitlab is completely stalled as cannot reproduce
I'm not convinced that this is an Intel issue. Looks to me that those affected AVRs (Denon?) are all using the same chipset which has some issue with 4K 12-bit modes.
Name it kodi-aesinkalsa-fix.patch
Messing about with those cache settings would not make high bitrate 4K videos (UHD BDs?) play smoothly on 100Mbit LAN. You will have to upgrade to Gigabit.
Dell Optiplex 3070 micro
The onboard HDMI on this is v.1.4 so it can not possibly pass through HDR.
Kodi was previously able to play HDR content when the Optiplex was running Windows 10
TV switched to HDR mode? How it was connected to the TV?
Odd but for some reason Intel has no support for YCbCr 4:2:2
YCBCR 4:2:0 handling in DRM layer [LWN.net]
They initially added 4:2:2 but then dropped it.
I tried to re-add it with this patch but after applying it the colors are wrong, so I obviously missed something.
My Samsung TV would switch to PC mode only if the device icon is named "PC". It does not matter if the signal is RGB or YCbCr.
How can I get Libreelec to output YCbCr
I have AX201 and it works fine in LE. I would assume AX200 should work too.
