AMD Tahiti PRO [Radeon HD 7950/8950 OEM / R9 280] Black screen during and after install ZORIN OS 16

Maybe some longterm users like @Aravisian and another could more help.
I can just find solution. here some information
It could be a bug but here package for focal.
Ubuntu – File list of package libclc-amdgcn/focal/all
here this guy wrote works for him.
Older Radeon/ATI GPU and Ubuntu drivers - revisited. | Einstein@Home

yes that means this path no exist or not created.