CPU temp AC vs Battery
anderson at freebsd.org
Tue May 1 19:26:07 UTC 2007
On 05/01/07 14:05, Nate Lawson wrote:
> Eric Anderson wrote:
>> On 04/26/07 09:52, Eric Anderson wrote:
>>> Hi everyone,
>>> I've just noticed something very odd. On my Dell D820 laptop, when
>>> running off AC power from boot, by idle CPU temperature sits around 58C.
>>> If I unplug the power, and then plug it back in again, it will drop
>>> down to around 49-50C within a minute or two. It will stay there.
>>> With or without powerd running.
>> Another note:
>> If I boot up without the AC adapter plugged in, it still runs hot. Only
>> the transition from AC -> battery seems to make a difference.
>> Anyone with some ideas??
> Does the temp change at all or is it stuck at 58C? If stuck, maybe the
> reading is incorrect and something in the AC line transition kicks the
> EC back into operation.
The temp does change, about 10C.
> If it changes, then perhaps something is generating a lot of interrupts
> (perhaps SMI or SCI irqs). More debug prints from the acpi-ca Notify
> routine caller would help zero in.
Just add some printfs in there and recompile/reboot?
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