OpenCL GPU acceleration disabled in 5/6/0

Exactly.

The old AMD-APP had been blacklisted because leading to problems regularly.

If still required for some reason it must be enabled manually via the “enable flag” in the per-device conf setting. On my system that looks like

cldevice_v6_rusticlamdradeon8060sgraphics=250 0 1 0 0 0.000 0.250

In your case there will be a 1 at the 5th position that must be changed to 0