Add hdmi_enable_4k=1 to config.txt and you should see the 4kp60 modes.
(4kp60 requires higher clock frequencies and scrambling so isn't enabled by default).
HDR isn't currently supported but should come soon.
Update. I did this and sure enough the 4k 60hz modes appeared. Thanks again.
Add hdmi_enable_4k=1 to config.txt and you should see the 4kp60 modes.
(4kp60 requires higher clock frequencies and scrambling so isn't enabled by default).
HDR isn't currently supported but should come soon.
Will give it a try. Thanks for the info
Hi,
I've been using the Rock64 builds of LibreElec and enjoying 4k HDR output for a while now. This build for example: LibreELEC-RK3328.arm-9.1-nightly-20190501-6f2af43-rock64
Just got an RPI4 today and I'm running some tests.
Setup:
I've got it up and running using this: LibreELEC-RPi4.arm-9.1.001.img.gz
I got a micro HDMI cable from Amazon to use with the PI4: https://www.amazon.co.uk/gp/product/b014i8tvli
which I understand supports 4K HDR
Issues: I can select resolutions of 4096x2160p @ 30, 29.97, 25, 23.98 and 3840x2160p @ 30, 29.97, 25, 23.98 --- but not at 60fps
Also the same content that used to be 4K HDR under the Rock64 build won't activate HDR on the RPI4.
It does play at 4k though. The HDMI is plugged into the same TV and same HDMI socket as the Rock64 was and it's playing the same 4K HDR title ... but no HDR.
Anyone got any suggestions. Happy to provide any info if it helps track down problems in the RPI4 build and HDR.
Thanks,
