(In reply to Takashi Iwai from comment #8) > At first, try to check whether the latest 6.7-rc still suffers from the same > problem. If it boots, it's something specific to 6.6.x, and we need to find > an upstream fix. > > If 6.7-rc still doesn't boot, it has to be reported to the upstream. But > without a proper log, it's a bit difficult to know to whom reporting. I > guess you'd be asked to perform git bisect in such a case. Thanks, I will build 6.7-rc as soon as possible and let you know.