The Intel drivers have had many serious regressions in the last year, so they are not the pinnacle of quality anymore. Both the X driver and the kernel drm bits

The Intel drivers have had many serious regressions in the last year, so they are not the pinnacle of quality anymore. Both the X driver and the kernel drm bits. One major regression set was introduced in 4.3 with the atomic modesetting changes. It's almost like Intel has cut funding for QA.