Comment 25 for bug 1813663

I apologize for the post, should have done some reading on the comments first. The 4.15.0-45-generic kernel linked to in the 3rd post does indeed solve my issue, so it looks like they are aware of exactly what caused this issue and it'll be fixed in future kernel updates. It's interesting it only seems to affect Dell laptops and docking stations though, maybe Dell has done something weird/proprietary again.