Comment # 43 on bug 1112824 from Michiel Janssens

(In reply to Atri Bhattacharya from comment #37)
> (In reply to Robert Munteanu from comment #36)
> > What I think would be useful is for those affected and for which the various
> > boot options worked to clarify whether they were using a discrete GPU or the
> > integrated GPU.
> 
> In my case integrated GPU: Intel� HD Graphics 620 (Kaby Lake GT2).

I have the same iGPU. Intel HD 620 KL GT2 on i7-7500U cpu.
Also have to mention that I've mainly tested with 2 connected 24inch external
monitors, so the gpu has to work harder and artifacts are easier to spot.