It seems the answer is here (this article was about 4.8) :
http://undeadly.org/cgi?action=artic...20101224204626
* Speed scaling is unavailable for this processor family (AMD K10)
From FreeBSD :
Code:
%dmesg|grep -i amd
root@farrell.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC amd64
CPU: AMD Athlon(tm) II X3 455 Processor (3314.72-MHz K8-class CPU)
Origin = "AuthenticAMD" Id = 0x100f53 Family = 10 Model = 5 Stepping = 3
AMD Features=0xee500800<SYSCALL,NX,MMX+,FFXSR,Page1GB,RDTSCP,LM,3DNow!+,3DNow
I found this too :
http://www.mail-archive.com/tech@ope.../msg07371.html