Hi list,
problem : it looks like my laptop either doesn't support C-states
other than "C0", or doesn't want to tell linux/powertop about the
C-states. It's an amd64 bought in late 2004.
Did I miss some option that should be activated in the kernel ? Or
does my "laptop processor" simply not support this feature ? I tried
looking up my cpu's features on the amd website, but got hopelessly
lost. I checked that all power-related features were enabled in the
bios.
Thanks in advance. Following is some info about my system.
# cat /proc/acpi/processor/CPU1/power
active state: C0
max_cstate: C8
bus master activity: 00000000
maximum allowed latency: 6666 usec
states:
# cat /proc/cpuinfo
processor : 0
vendor_id : AuthenticAMD
cpu family : 15
model : 4
model name : AMD Athlon(tm) 64 Processor 3000+
stepping : 10
cpu MHz : 800.000
cache size : 1024 KB
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
mca cmov pat pse36 clflush mmx fxsr sse sse2 syscall nx mmxext lm
3dnowext 3dnow
bogomips : 1597.05
TLB size : 1024 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management: ts fid vid ttp
# x86info -v
x86info v1.20. Dave Jones 2001-2006
Feedback to <[EMAIL PROTECTED]>.
Found 1 CPU
--------------------------------------------------------------------------
Family: 15 Model: 4 Stepping: 10
CPU Model : Athlon 64 [SH7-CG]
Processor name string: AMD Athlon(tm) 64 Processor 3000+
Feature flags:
Onboard FPU
Virtual Mode Extensions
Debugging Extensions
Page Size Extensions
Time Stamp Counter
Model-Specific Registers
Physical Address Extensions
Machine Check Architecture
CMPXCHG8 instruction
Onboard APIC
SYSENTER/SYSEXIT
Memory Type Range Registers
Page Global Enable
Machine Check Architecture
CMOV instruction
Page Attribute Table
36-bit PSEs
CLFLUSH instruction
MMX support
FXSAVE and FXRESTORE instructions
SSE support
SSE2 support
Extended feature flags:
syscall nx mmxext lm 3dnowext 3dnow
# uname -a
Linux localhost 2.6.22.1 #12 Fri Aug 31 10:36:08 IST 2007 x86_64 AMD
Athlon(tm) 64 Processor 3000+ AuthenticAMD GNU/Linux
/usr/src/linux
_______________________________________________
Power mailing list
[email protected]
http://www.bughost.org/mailman/listinfo/power
