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rdesh

Member

Registered: 2007-05-03

Posts: 6

athlon x2: "power management: no" ??

Hey All,

Just configured a new Athlon X2 system, but for some reason /proc/acpi/processor/CPU0 and CPU1 report that Power management is not supported.  I have installed powernow-k8 with cpufrequtils and acpid, with Cool n Quiet enabled.  here are outputS:

[/proc/acpi/processor/CPU0][%] ls
info  limit  power  throttling

[/proc/acpi/processor/CPU0][%] cat info
processor id:            0
acpi id:                 0
bus mastering control:   yes
power management:        no
throttling control:      no
limit interface:         no

[/proc/acpi/processor/CPU0][%] cat limit 
<not supported>

[/proc/acpi/processor/CPU0][%] cat power 
active state:            C0
max_cstate:              C8
bus master activity:     00000000
maximum allowed latency: 8000 usec
states:

[/proc/acpi/processor/CPU0][%] cat throttling 
<not supported>

And cpuinfo:

processor    : 0
vendor_id    : AuthenticAMD
cpu family    : 15
model        : 75
model name    : AMD Athlon(tm) 64 X2 Dual Core Processor 3800+
stepping    : 2
cpu MHz        : 1000.000
cache size    : 512 KB
physical id    : 0
siblings    : 2
core id        : 0
cpu cores    : 2
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 ht syscall nx mmxext fxsr_opt rdtscp lm 3dnowext 3dnow pni cx16 lahf_lm cmp_legacy svm extapic cr8_legacy
bogomips    : 2005.83
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 tm stc

processor    : 1
vendor_id    : AuthenticAMD
cpu family    : 15
model        : 75
model name    : AMD Athlon(tm) 64 X2 Dual Core Processor 3800+
stepping    : 2
cpu MHz        : 1000.000
cache size    : 512 KB
physical id    : 0
siblings    : 2
core id        : 1
cpu cores    : 2
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 ht syscall nx mmxext fxsr_opt rdtscp lm 3dnowext 3dnow pni cx16 lahf_lm cmp_legacy svm extapic cr8_legacy
bogomips    : 2005.83
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 tm stc

Also, Sensors show that one core is at 19C and another is as 25C.  wtf?

Thanks,
rdesh

lucke

Member

From: Poland

Registered: 2004-11-30

Posts: 4,018

Re: athlon x2: "power management: no" ??

Don't trust ACPI if you're using cpufreq. Trust cpufreq-info.

Your cpuinfo shows your cores at 1000 Mhz, so it works.

rdesh

Member

Registered: 2007-05-03

Posts: 6

Re: athlon x2: "power management: no" ??

any ideas about the sensor temps being so different?

sensor 1 = CORE0_TEMP
sensor 2 = CORE1_TEMP

lucke

Member

From: Poland

Registered: 2004-11-30

Posts: 4,018

Re: athlon x2: "power management: no" ??

It's the same on my box and presumably others' too. I don't know where this difference comes from, but it seems to be nothing out of order.

Last edited by lucke (2007-06-20 16:39:17)