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I have a machine with an Asrock q1900b-itx mobo and I'm experiencing random freezes of the system. By freeze I mean everything hangs and there is absolutely nothing that can be done except reset. I've read lots of threads, which date up to a year ago, about this problem , so this has been going for quite some time. The suggestion I found is to go to the BIOS and set C1 as the max state or to put some "intel_idle.max_cstate=1" line somewhere, which does the same thing.
The problem is that this is not a fix. Disabling CPU features isn't a way to solve problems. I bought this machine for a low power server and disabling power saving features is the last thing I would want to do. If a fix can't be made I suggest that BayTrail CPU's have to be labeled as "Not supported" and I would have to go to Windows, until a proper fix is made.