Re: [lm-sensors] Ticket #2382

[Mike Gilbert <mike@baymicrosystems.com>]

Guenter,

We're evaluating the new card in a open chassis. It is on the test bench 
with a table fan for cooling. I turned off the fan and got:

     ENTER show_temp
     cpu 0 (0)
     status_reg @ 19C
     eax = 885E0000 edx = 0
     temp = 1770 valid = 1
     EXIT show_temp

It seems like you've seen this before. What's going on?

Thanks,
Mike


On 11/19/2013 09:33 AM, Guenter Roeck wrote:
> On 11/19/2013 06:05 AM, Mike Gilbert wrote:
>> Guenter,
>>
>> Thanks for responding. The cards are both made by Emerson. The old 
>> one is a COMX-430. The new one is a COMX-440.
>>
>> Mike
>>
>>
>> Here's the info from the old CPU card:
>>
>> processor    : 0
>> vendor_id    : GenuineIntel
>> cpu family    : 15
>> model        : 4
>> model name    : Intel(R) Xeon(TM) CPU 3.00GHz
>> stepping    : 3
>> cpu MHz        : 3000.000
>> cache size    : 2048 KB
>> physical id    : 0
>> siblings    : 2
>> core id        : 0
>> cpu cores    : 1
>> 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 dts acpi mmx fxsr sse sse2 ss ht tm pbe 
>> syscall nx lm constant_tsc pebs bts nopl pni dtes64 monitor ds_cpl 
>> cid cx16 xtpr
>> bogomips    : 5986.15
>> clflush size    : 64
>> cache_alignment    : 128
>> address sizes    : 36 bits physical, 48 bits virtual
>> power management:
>>
>> processor    : 1
>> vendor_id    : GenuineIntel
>> cpu family    : 15
>> model        : 4
>> model name    : Intel(R) Xeon(TM) CPU 3.00GHz
>> stepping    : 3
>> cpu MHz        : 3000.000
>> cache size    : 2048 KB
>> physical id    : 0
>> siblings    : 2
>> core id        : 0
>> cpu cores    : 1
>> 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 dts acpi mmx fxsr sse sse2 ss ht tm pbe 
>> syscall nx lm constant_tsc pebs bts nopl pni dtes64 monitor ds_cpl 
>> cid cx16 xtpr
>> bogomips    : 5985.19
>> clflush size    : 64
>> cache_alignment    : 128
>> address sizes    : 36 bits physical, 48 bits virtual
>> power management:
>>
>>
>> Here's the info from the new CPU card:
>>
>> processor       : 0
>> vendor_id       : GenuineIntel
>> cpu family      : 6
>> model           : 28
>> model name      : Intel(R) Atom(TM) CPU D510   @ 1.66GHz
>
> Yes, Jean was right, same issue, same response.
>
> One thing to try might be to see what happens
> if you put the system under load, ie heat up the CPU.
> Can you try that ?
>
> Thanks,
> Guenter
>
>> stepping        : 10
>> microcode       : 0x107
>> cpu MHz         : 1662.657
>> cache size      : 512 KB
>> physical id     : 0
>> siblings        : 4
>> core id         : 0
>> cpu cores       : 2
>> apicid          : 0
>> initial apicid  : 0
>> fpu             : yes
>> fpu_exception   : yes
>> cpuid level     : 10
>> wp              : yes
>> flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr 
>> pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm 
>> pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good nopl 
>> aperfmperf pni dtes64 monitor ds_cpl tm2 ssse3 cx16 xtpr pdcm movbe 
>> lahf_lm dtherm
>> bogomips        : 3325.31
>> clflush size    : 64
>> cache_alignment : 64
>> address sizes   : 36 bits physical, 48 bits virtual
>> power management:
>>
>> processor       : 1
>> vendor_id       : GenuineIntel
>> cpu family      : 6
>> model           : 28
>> model name      : Intel(R) Atom(TM) CPU D510   @ 1.66GHz
>> stepping        : 10
>> microcode       : 0x107
>> cpu MHz         : 1662.657
>> cache size      : 512 KB
>> physical id     : 0
>> siblings        : 4
>> core id         : 0
>> cpu cores       : 2
>> apicid          : 1
>> initial apicid  : 1
>> fpu             : yes
>> fpu_exception   : yes
>> cpuid level     : 10
>> wp              : yes
>> flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr 
>> pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm 
>> pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good nopl 
>> aperfmperf pni dtes64 monitor ds_cpl tm2 ssse3 cx16 xtpr pdcm movbe 
>> lahf_lm dtherm
>> bogomips        : 3325.31
>> clflush size    : 64
>> cache_alignment : 64
>> address sizes   : 36 bits physical, 48 bits virtual
>> power management:
>>
>> processor       : 2
>> vendor_id       : GenuineIntel
>> cpu family      : 6
>> model           : 28
>> model name      : Intel(R) Atom(TM) CPU D510   @ 1.66GHz
>> stepping        : 10
>> microcode       : 0x107
>> cpu MHz         : 1662.657
>> cache size      : 512 KB
>> physical id     : 0
>> siblings        : 4
>> core id         : 1
>> cpu cores       : 2
>> apicid          : 2
>> initial apicid  : 2
>> fpu             : yes
>> fpu_exception   : yes
>> cpuid level     : 10
>> wp              : yes
>> flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr 
>> pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm 
>> pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good nopl 
>> aperfmperf pni dtes64 monitor ds_cpl tm2 ssse3 cx16 xtpr pdcm movbe 
>> lahf_lm dtherm
>> bogomips        : 3325.31
>> clflush size    : 64
>> cache_alignment : 64
>> address sizes   : 36 bits physical, 48 bits virtual
>> power management:
>>
>> processor       : 3
>> vendor_id       : GenuineIntel
>> cpu family      : 6
>> model           : 28
>> model name      : Intel(R) Atom(TM) CPU D510   @ 1.66GHz
>> stepping        : 10
>> microcode       : 0x107
>> cpu MHz         : 1662.657
>> cache size      : 512 KB
>> physical id     : 0
>> siblings        : 4
>> core id         : 1
>> cpu cores       : 2
>> apicid          : 3
>> initial apicid  : 3
>> fpu             : yes
>> fpu_exception   : yes
>> cpuid level     : 10
>> wp              : yes
>> flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr 
>> pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm 
>> pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good nopl 
>> aperfmperf pni dtes64 monitor ds_cpl tm2 ssse3 cx16 xtpr pdcm movbe 
>> lahf_lm dtherm
>> bogomips        : 3325.31
>> clflush size    : 64
>> cache_alignment : 64
>> address sizes   : 36 bits physical, 48 bits virtual
>> power management:
>>
>>
>> On 11/18/2013 05:39 PM, Guenter Roeck wrote:
>>> What Atom chip ? Can you provide output of /proc/cpuinfo ?
>>>
>>> Thanks,
>>> Guenter
>>>
>>> On Mon, Nov 18, 2013 at 01:56:28PM -0500, Mike Gilbert wrote:
>>>> Do you have any additional information pertaining to ticket 2382?
>>>>
>>>> The CPU card we use in our products is going end-of-life. The CPU
>>>> card vendor send us a new card that is supposed to be a drop in
>>>> replacement (it's the same card with a newer Atom chip). The new
>>>> card returns an error when reading the coretemp:
>>>>
>>>>     # cat /sys/bus/platform/devices/coretemp.0/temp2_input
>>>>     cat: read error: Resource temporarily unavailable
>>>>     #
>>>>
>>>> Some printk debugging yields:
>>>>
>>>>     ENTER show_temp
>>>>     status_reg @ 19C
>>>>     eax = 8620000 edx = 0
>>>>     temp = 0 valid = 0
>>>>     EXIT show_temp
>>>>
>>>> This looks like the same issue described in your ticket 2382.
>>>>
>>>> Any information you can provide will be appreciated.
>>>>
>>>> Mike Gilbert
>>>> Principle Engineer
>>>> Bay Microsystems, Inc.
>>>>
>>>>
>>>> _______________________________________________
>>>> lm-sensors mailing list
>>>> lm-sensors@lm-sensors.org
>>>> http://lists.lm-sensors.org/mailman/listinfo/lm-sensors
>>>>
>>
>>
>>
>


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