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#1 2007-05-17 17:35:49

matt_man22
Member
From: Boston, MA
Registered: 2007-04-28
Posts: 54

Core Duo Temperature Difference

I'm running arch on a T60 core duo.  I am monitoring temperatures of the CPUs with Kima.

Whenever I come back from standby (suspend to RAM), the second CPU always shoots up in temperature.  Right now, I have CPU0 at 120F and CPU1 at 156F.  I am using powersave with kpowersave and cpufreq.  All the frequency scaling is working correctly after resuming, with both running at 1ghz.  Any idea on why there is such a discrepancy in temperature?

Thanks.

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#2 2007-05-17 17:42:22

lucke
Member
From: Poland
Registered: 2004-11-30
Posts: 4,017

Re: Core Duo Temperature Difference

I don't know where those disrepancies come from, but I think it's normal. My X2 cores have different temperatures too.

Core0 Temp:
             +25°C
Core1 Temp:
             +32°C

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#3 2007-05-17 17:53:25

matt_man22
Member
From: Boston, MA
Registered: 2007-04-28
Posts: 54

Re: Core Duo Temperature Difference

But the strange thing is, they are always the same temperature before suspend-to-ram.

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#4 2007-05-17 18:28:19

matt_man22
Member
From: Boston, MA
Registered: 2007-04-28
Posts: 54

Re: Core Duo Temperature Difference

Must be some type of incorrect reading by acpi in the kernel.  A reboot shows normal temperatures again within a minute, so I am thinking that after suspend-to-ram the reading of the temperature is incorrect.  Annoying, but I can live with it.

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