* Re: [lm-sensors] No temperature output with k10temp for AMD II X3
2010-05-09 20:19 [lm-sensors] No temperature output with k10temp for AMD II X3 435 Florian Schwade
@ 2010-05-15 16:11 ` Florian Schwade
2010-05-17 7:06 ` Clemens Ladisch
1 sibling, 0 replies; 3+ messages in thread
From: Florian Schwade @ 2010-05-15 16:11 UTC (permalink / raw)
To: lm-sensors
On 15.05.2010 09:06, Jean Delvare wrote:
> Hi Florian,
>
> On Sun, 09 May 2010 22:19:11 +0200, Florian Schwade wrote:
>
>> Hello,
>> I have an AMD II X3 435 cpu. Sensors-detect successfully detects the
>> k10temp module is needed.
>>
> There's something missing in your CPU name. Is is an "Athlon II X3" or
> a "Phenom II X3"? I guess the former.
>
>
>> Some south bridges, CPUs or memory controllers contain embedded sensors.
>> Do you want to scan for them? This is totally safe. (YES/no): y
>> Silicon Integrated Systems SIS5595... No
>> VIA VT82C686 Integrated Sensors... No
>> VIA VT8231 Integrated Sensors... No
>> AMD K8 thermal sensors... No
>> AMD Family 10h thermal sensors... Success!
>> (driver `k10temp')
>> AMD Family 11h thermal sensors... No
>> Intel Core family thermal sensor... No
>> Intel Atom thermal sensor... No
>> Intel AMB FB-DIMM thermal sensor... No
>> VIA C7 thermal sensor... No
>> VIA Nano thermal sensor... No
>>
>>
>> I also checked that it is loaded correctly.
>>
>> [florian@errorkiste ~]$ lsmod |grep k10temp
>> k10temp 2827 0
>>
>> If I run sensors to get the temperature the output is just:
>>
>> [florian@errorkiste ~]$ sensors
>> k10temp-pci-00c3
>> Adapter: PCI adapter
>> temp1: +21.0째C (high = +70.0째C)
>>
>> 21째C is impossible to be the correct temperature. The BIOS reports my
>> CPU running at something like 36째.
>>
> Maybe the BIOS applies an arbitrary offset, or they get the temperature
> from an external sensor connected to a hardware monitoring device.
>
>
>> The Kernel is: 2.6.33-ARCH
>> lm-sensors version: lm_sensors 3.1.2-1
>>
>> I would appreciate any help. Thanks a lot!
>>
> Did you force driver loading? Embedded sensors are known to be
> unreliable on the DR-BA, DR-B2, DR-B3, RB-C2 and HY-D0 revisions of the
> family 10h CPU. The driver won't bind to such CPUs by default.
>
> Maybe you have found one more unreliable revision. Please provide the
> contents of /proc/cpuinfo for your CPU, as well as the socket format.
> That being said, unreliability is essentially linked to the socket
> format, so the detection code currently in the driver should work even
> for future CPU models.
>
>
Hi.
Yes it is an AMD Athlon II x3 on Socket AM3. Sorry.
The content of /proc/cpu info is:
cat /proc/cpuinfo
processor : 0
vendor_id : AuthenticAMD
cpu family : 16
model : 5
model name : AMD Athlon(tm) II X3 435 Processor
stepping : 2
cpu MHz : 800.000
cache size : 512 KB
physical id : 0
siblings : 3
core id : 0
cpu cores : 3
apicid : 0
initial apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 5
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
pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc rep_good nonstop_tsc
extd_apicid pni monitor cx16 popcnt lahf_lm cmp_legacy svm extapic
cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt
bogomips : 5790.26
TLB size : 1024 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 48 bits physical, 48 bits virtual
power management: ts ttp tm stc 100mhzsteps hwpstate
processor : 1
vendor_id : AuthenticAMD
cpu family : 16
model : 5
model name : AMD Athlon(tm) II X3 435 Processor
stepping : 2
cpu MHz : 800.000
cache size : 512 KB
physical id : 0
siblings : 3
core id : 1
cpu cores : 3
apicid : 1
initial apicid : 1
fpu : yes
fpu_exception : yes
cpuid level : 5
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
pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc rep_good nonstop_tsc
extd_apicid pni monitor cx16 popcnt lahf_lm cmp_legacy svm extapic
cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt
bogomips : 5789.20
TLB size : 1024 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 48 bits physical, 48 bits virtual
power management: ts ttp tm stc 100mhzsteps hwpstate
processor : 2
vendor_id : AuthenticAMD
cpu family : 16
model : 5
model name : AMD Athlon(tm) II X3 435 Processor
stepping : 2
cpu MHz : 800.000
cache size : 512 KB
physical id : 0
siblings : 3
core id : 2
cpu cores : 3
apicid : 2
initial apicid : 2
fpu : yes
fpu_exception : yes
cpuid level : 5
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
pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc rep_good nonstop_tsc
extd_apicid pni monitor cx16 popcnt lahf_lm cmp_legacy svm extapic
cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt
bogomips : 5789.22
TLB size : 1024 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 48 bits physical, 48 bits virtual
power management: ts ttp tm stc 100mhzsteps hwpstate
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* Re: [lm-sensors] No temperature output with k10temp for AMD II X3
2010-05-09 20:19 [lm-sensors] No temperature output with k10temp for AMD II X3 435 Florian Schwade
2010-05-15 16:11 ` [lm-sensors] No temperature output with k10temp for AMD II X3 Florian Schwade
@ 2010-05-17 7:06 ` Clemens Ladisch
1 sibling, 0 replies; 3+ messages in thread
From: Clemens Ladisch @ 2010-05-17 7:06 UTC (permalink / raw)
To: lm-sensors
Jean Delvare wrote:
> On Sun, 09 May 2010 22:19:11 +0200, Florian Schwade wrote:
> > [florian@errorkiste ~]$ sensors
> > k10temp-pci-00c3
> > Adapter: PCI adapter
> > temp1: +21.0°C (high = +70.0°C)
> >
> > 21°C is impossible to be the correct temperature. The BIOS reports my
> > CPU running at something like 36°.
The temperature values returned by k10temp are relative; AMD says:
| Tctl is the processor temperature control value, used by the platform to
| control cooling systems. Tctl is a non-physical temperature on an
| arbitrary scale measured in degrees. It does _not_ represent an actual
| physical temperature like die or case temperature. Instead, it specifies
| the processor temperature relative to the point at which the system must
| supply the maximum cooling for the processor's specified maximum case
| temperature and maximum thermal power dissipation.
Apparently, on your CPU, the reported values are about 15 °C lower.
lm-sensors currently does not indicate that values are not absolute.
> Maybe the BIOS applies an arbitrary offset,
AMD doesn't publish any method to derive this offset.
> or they get the temperature from an external sensor connected to a
> hardware monitoring device.
This is usually the case, especially since most mainboards also have
a bunch of other temperature sensors handled by the same hwmon device.
Regards,
Clemens
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