I need to make some clarifications. ( Thanks @Achilles )
We have walked through the posts here and pooled our knowledge into this post.
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You do not need Intel Compute Runtime (ICR) if you are NOT performing HW tonemapping.
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If you want Intel HW tonemapping.
– HW Tone mapping currently only supported and validated with Ubuntu 20.04
– Intel Compute Runtime 21.49 is installed for CometLake and above.
– Beignet & OpenCL is installed for KabyLake & CoffeeLake -
Delineation:
– Intel -9xxx, and below, CPUs you can still use the i965 video driver if you so choose to address iHD driver regressions (VC-1 macroblocking… which Intel is now working on)
– Intel -10xxx and above must use the iHD driver. -
Alpha testing of Ubuntu 22.04 – DOES NOT YET WORK with HW tone mapping.