Oh CRAP.
I see it now. You have a CoffeeLake CometLake CPU.
Feb 17, 2021 07:03:19.141 [0x7f3642c80640] INFO - Processor Intel(R) Core™ i3-10100 CPU @ 3.60GHz
In the CometLake CPU family, Intel made another major change.
Beignet and OpenCL as distributed by Ubuntu don’t include CometLake support.
CometLake does not include backward support in the GPU like we had with the iHD and i965 drivers.
The transcoder is trying to activate it and fails. It falls back to software HDR->SDR.
The temporary solution is to download the source for Beignet & OpenCL, let it configure itself for your CPU, then build and install.
That process will supersede the installed packages at the library level.
The Plex installer will be happy because the package is installed.
You will be happy because you have versions of the package which support your CPU.
Engineering has been working on the replacement for Beignet & OpenCL since it was discovered during their initial forum preview.
The better, which they are developing for all platforms now, is the Intel Compute Runtime (ICR).
EDIT: Incorrectly stated CoffeeLake (-9xxx). Should have been CometLake (-10xxx)
