Ok, we will test it. I got the same problem with my Dell XPS 13 7390 with same CPU, after I switch to Beta ( last 2 updates, the problem for my Dell fixed. But I don't know why it don't work for the Matebook.
Nope i don't have test this patches, because someone set the frame buffers before...I don't know why they chose this patch, but the patch work...only the display go 1-2 minutes dark. I will check what you say, thanks.