Maybe this will do a better job of identifying the race condition that made the AMD card in my laptop unusable. About 5 years ago a bunch of changes evinced a c

Maybe this will do a better job of identifying the race condition that made the AMD card in my laptop unusable. About 5 years ago a bunch of changes evinced a change in behavior when trying to switch hybrid graphics controllers. I worked in a bug report for a long time after I and a few others fingered it as a race condition (it failed maybe 1/10 switches). A cluster of other changes meant it was difficult to bisect (it broke one way at a few points and broke differently at other points, but in a way that made it difficult to identify whether the bug we were triageing existed at that point.)