https://bugzilla.kernel.org/show_bug.cgi?id=199653
--- Comment #7 from James Le Cuirot (chewi@gentoo.org) --- I had high hopes for 4.18-rc1 but alas it froze after a few hours. :( I know having the latest firmware is important so I have that too. These OpenSUSE packages (some unofficial) are installed:
kernel-default-4.18.rc1-1.1.gfa9e020 kernel-firmware-20180606-35.1 libdrm2-2.4.99~git20180511-lp150.1.1 Mesa-18.2.0~git20180619-lp150.16.1