I am aware that the following not improve your past situation, but please
keep in mind for the future, that for a regular linux user, there is
currently 0 reasons to choose the proprietary close source amdgpu-pro.

Use the default all opensource instead. It was demonstrated multiple times
that they offer better performance, and robustness. See various articles,
forum posts, reddit/r/linux_gaming, phoronix, etc.

 And also, due to their nature of being packed together with all distros,
are much wider tested by the audience with a much broader hardware
combination. As a added bonus, you can also use the latest and greatest
bleeding endge mesa+kernel(not just that you can, but also highly
recommended) and completely forget about dkms breakage.

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Sent from mobile, apologies for typos.