I don't have an answer for you, but I wonder if Solus is not recognizing your GPU.
When looking around I saw that gpu problems like this should get fixed using nomodeset, buy yeah, no luck for me.
It's really weird too, right now I have Manjaro installed on it and everything worked fine out of the box, I also gave Kubuntu and Opensuse a try and everything was perfect. I'm really curious to know what exactly is not working with solus right now
This seems interesting, I'm gonna give it a try and report back (actually nevermind, mine is already from 2011, it wasn't caught in the limbo.)