Thanks, appreciated. I figured there were some extra things that needed doing, I just didn't know what they were. (I'm just tinkering around with it, anyway, as I have no intention of moving off Pie as my daily driver any time soon. I probably could have waited longer before experimenting, until 17 was beyond the alpha stage, but I've been itching to do something new ever since I got Pie up and running with all the features I wanted.)You need to pick - at least - https://review.lineageos.org/c/LineageOS/android_device_oneplus_oneplus3/+/255737 from https://review.lineageos.org/q/project:LineageOS%2Fandroid_device_oneplus_oneplus3+status:open, maybe all.
For the blobs commits (i.e. https://review.lineageos.org/c/LineageOS/android_device_oneplus_oneplus3/+/260573 and https://review.lineageos.org/c/LineageOS/android_device_oneplus_oneplus3/+/262330) see also https://github.com/dianlujitao/proprietary_vendor_oneplus/commits/lineage-17.0 .
Such insight. I never would have guessed.There's a good reason why OP calls it an experimental build instead of alpha or beta... Rebuilding experimental needs skilld and patience...