On 02/20/2014 04:29 AM, Dieter Mummenschanz wrote: > Hello, > > on my Lenovo T440p Laptop the Haswell i7-4600M CPU refuses to enter lower PC > states resulting in 14-15 Watts continuous power drain even if the system is > idle and every tunalbes in powertop 2.5 are enabled. The issue is > reproducable with Kernel versions 3.13 up to 3.14-rc3. > > Did anyone else experience a similar issue?
Something's confused here. Do you mean P-states (i.e. performance states or "frequency" settings) or PC-states (i.e. "package C-states")? I suspect that you mean the latter, in which case intel_pstate has nothing to do with the problem. The relevant diagnostic is the output from turbostat. --Andy -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
