(In reply to comment #9)
> (In reply to comment #8)

> > optimize SI VM handling + use lower_32_bits where appropriate reverted - the
> > latter just so I could revert the former.
> > 
> > I'll see if I am stable over the next couple of days like this.
> 
> I am stable so far with the above reverted.

Spoke too soon, I just locked. Wasn't quite the same as before in that screen
stayed on displaying normal rather that off/on + junk.

Wasn't doing anything GPU related (accepting I always am with glamor), was
doing a big compile, so memory pressure I guess.

Also just add to the mix, after thinking I was stable yesterday I upgraded gcc
and updated llvm and mesa so they were different in several ways, though I
haven't rebuilt kernel.