On Mon, 2014-09-29 at 11:57 +0200, Christophe Thil wrote: > Package: src:linux > Version: 3.16.3-2 > Severity: normal > > Dear Maintainer, > > with Kernel 3.16, intel_idle is enabled for the Intel Atom S1260 CPU > (Centerton SoC). This leads to a +20°C temperature increase when the CPU > is idle, exceeding the 100°C alarm threshold for passive cooled systems > like the Supermicro X9SBAA-F. > > With 3.14, intel_idle was blacklisted for this CPU, which runs fine. If > 3.16 is booted with intel_idle.max_cstate=0 processor.max_cstate=0, > which disables the intel_idle, the CPU also stays cool. [...]
It looks like the relevant change is: commit acead1b0fac5b10d0ae3f1cc5f7820b9f9f924f5 Author: Jan Kiszka <jan.kis...@siemens.com> Date: Sat Jan 25 22:24:22 2014 +0100 intel_idle: Add CPU model 54 (Atom N2000 series) Add CPU ID for Atom N2600/N2800 processors. Datasheets indicate support for this, detailed information about potential quirks or limitations are missing, though. So we just reuse the definition for the previous ATOM series. [...] as those processors are part of the same Atom generation as Centerton. I think that more specific ID matching is required here. Ben. -- Ben Hutchings The two most common things in the universe are hydrogen and stupidity.
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