Ive actually fixed my own issue for once
Ive actually fixed it n im not to sure if it was me that caused the issue or the update still?
I ran -
dpkg -l | grep -i amdgpu
and noticed that ROCm was in the list, so I ran
dpkg --purge rock-dkms & dpkg --purge rock-dkms-firmware , removed the PPA manually & rebooted - Viola - AMD® Hawaii is back - Phew!!!
The problems was that the ROCm PPA was still in my repo list even tho I removed it via the AMD Wiki & had been working fine as shown in the vid until Pop updated??
All in all Im glad I fixed it, but its a shame that I dont really know why it happened in the 1st place ?
If your wondering why I had the ROCm drivers installed - I own a R9 290 n I was trying to get AMDGPU working so that I can use Opengl 4.5
Hundred of guides n wiki that all advise I needed to use amdgpu-pro & a few also suggested to try the ROCm setup .. Non of them worked & now Ive given in n also own Win10 for 3 games that require vulkan in linux
Im quite chuffed I fixed this on my own for once - I dont feel a complete noob anymore