> Date: Wed, 7 Sep 2016 03:48:46 -0700 > From: Philip Guenther <[email protected]> > > On Wed, 7 Sep 2016, Dimitris Papastamos wrote: > > I am also seeing something similar on 6.0-stable. In my case, it does > > not hang on boot however. I have not yet tried -current but will do and > > report back. > ... > > bios0: vendor American Megatrends Inc. version "5.6.5" date 04/15/2015 > ... > > C2: state 6: substate 8 >= num 3: C3(10@1500 mwait.1@0x52), C1(1000@1 > > mwait.1), PSS > > You may want to check with your laptop(?) vendor to see if they have a > BIOS update available...like not providing ACPI data that tries to do > things that the CPU doesn't support.
Note that the Celeron N2930 is in fact a "Bay Trail" Atom CPU. We see the same C-state message on all of them. Are you sure you're not interpreting the ACPI "standard" too strict here? In any case, since Windows obviously runs on these machines and doesn't complain I doubt this will be fixed. We probably should just do something "sensible" here and stop printing the message. Also note that the ehci(4) issue pops up on all these Bay Trail machines.
