(In reply to David Walker from comment #23) > I can confirm that removing drm-kmp-default fixed the problems with my > Haswell (i5-4210M) chip. Hopefully, the 4.9.x bugs will be resolved, as I > have to remove drm-kmp-default when there's a kernel update for 42.3. FYI, I've found that the current Tumbleweed kernel (4.11.8-2-default) and its drm-kmp-default work fine on my laptop.