I got my 6800 running locally by updating to llvm 11 and recompiling mesalib with it. But for official support you have to wait until Solus ships newer llvm versions. I won't provide my changed files.

3 months later

I too can confirm Solus does not run on 6000 series Radeon cards. (6800XT here). I look forward to a package update and a new 4.3 ISO with support build in.

FYI, llvmlite 0.36.0 is out.

    5 days later

    Quick update: The 6900XT works great on Pop!_OS 20.11 as of April 1st, 2021. Seems like all the 6000 series AMD cards will have baked in support in the next Solus ISO (4.3?).

    romulous75 Spot on. I had the exact same experience approx. 6 months ago when I first purchased the 6900 XT.

    20 days later
    17 days later