Ubuntu – Cannot revert graphics drivers after trying to upgrade using the oibaf PPA on Ubuntu 17.10

I am having issues after sudo apt upgrade failed to install complete packages. I tried purging the ppa to revert the drivers to no avial.

Correcting dependencies... failed. The following packages have unmet dependencies:  libgl1-mesa-dri : Depends: libdrm-amdgpu1 (>=
2.4.85+git1710271830.33dcc2~gd~a) but 2.4.83-1 is installed  mesa-va-drivers : Depends: libdrm-amdgpu1 (>=
2.4.85+git1710271830.33dcc2~gd~a) but 2.4.83-1 is installed  mesa-vdpau-drivers : Depends: libdrm-amdgpu1 (>=
2.4.85+git1710271830.33dcc2~gd~a) but 2.4.83-1 is installed 
E: Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages. 
E: Unable to correct dependencies 
$ sudo dpkg --purge libdrm-common dpkg: warning: ignoring request to remove libdrm-common which isn't installed 
$ sudo ppa-purge  ppa:oibaf/graphics-drivers Updating packages lists PPA to be removed: oibaf graphics-drivers 
Warning:  Could not find package list for PPA: oibaf graphics-drivers

I tried purging and re-adding the ppa several times. I tried "-f install", "autoremove", "pkg –configure -a".

I tried fixing in synaptic, only to find more errors.

All I want to do at this point is get rid of this ppa & revert to the old packages.

I believe my problem lies here:

Preparing to unpack …/libdrm-amdgpu1_2.4.85+git1710311403.33dcc2~gd~a_amd64.deb …
Unpacking libdrm-amdgpu1:amd64 (2.4.85+git1710311403.33dcc2~gd~a) over (2.4.83-1) …
dpkg: error processing archive /var/cache/apt/archives/libdrm-amdgpu1_2.4.85+git1710311403.33dcc2~gd~a_amd64.deb (–unpack):
trying to overwrite '/usr/share/libdrm/amdgpu.ids', which is also in package libdrm-common 2.4.85+git1710311403.33dcc2~gd~a
Errors were encountered while processing:
/var/cache/apt/archives/libdrm-amdgpu1_2.4.85+git1710311403.33dcc2~gd~a_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)

The Oibaf PPA is here.

Screenshot after purging the PPA:

EDIT:I have since wiped my hard drive and re-installed Ubuntu 17.10. And, I found a post explaining, "How To Install The Latest AMDGPU-PRO Drivers On Linux" but, I have not attempted to try it yet.