[NTLUG:Discuss] Temperature Triggers

[Stephen Davidson]

That seems to more for Fan Control, especially Thinkpads.  The only
information on temperature I already had.

Suggestions?

Regards,
Steve

On 08/30/2015 11:17 AM, Gilbert Morrow wrote:
> https://ask.fedoraproject.org/en/question/31514/how-to-change-cpu-temperature-thresholds-and-control-fan-speed/,
> found this with Google search. Might help.
> On Aug 30, 2015 10:17 AM, "Stephen Davidson" <gorky at freenet.carleton.ca>
> wrote:
>
>> Greetings.
>>
>> This is an older bios -- there are NO temperature settings, readings, or
>> other temperature controls in the BIOS.
>>
>> Lm_sensors had some kind of "upgrade" at some point and now if a CPU
>> temp (and/or GPU, depending on system capabilities) exceeds thresholds,
>> it issues an "shutdown -h now" command to the OS.  For a 'modern' CPU,
>> the thresholds are actually a bit on the high side.  For this particular
>> line of CPUs, that threshold is low (for the parent or previous
>> generation CPU, VERY low -- the threshold is just above it's normal IDLE
>> temp of 85C!).
>>
>> There are a couple of processes that will run and load the CPU (one of
>> which is the 'Up-to-date check'), and if they run long enough (or back
>> to back), CPU will start approaching normal max temp (if memory serves,
>> that's 99c on this system -- but it's been a while & HP's docs says
>> 95c).  Air flow is good, and I've just disassembled and cleaned the
>> system so all dust bunnies are removed -- and I did double check that
>> the fans are running properly.
>>
>> Contents of 'sensors.d/laptop' file (note: when temp1_input ==
>> temp1_crit, 'shutdown -h now' gets issued by a daemon for lm_sensors);
>>
>> chip "acpitz-virtual-0"
>>    compute temp1 @+10, at +10
>>
>> Output:
>> steve at sda64 ~ $ sensors -u
>> acpitz-virtual-0 Adapter:
>> Virtual device temp1:
>>     temp1_input: 60.000
>>     temp1_crit: 100.000
>>
>> k8temp-pci-00c3
>> Adapter: PCI adapter
>> Core0 Temp:
>>     temp1_input: 44.000
>>
>> Without the sensors.d file;
>> steve at sda64 ~ $ sensors -u
>> acpitz-virtual-0 Adapter:
>> Virtual device temp1:
>>     temp1_input: 50.000
>>     temp1_crit: 90.000
>>
>> k8temp-pci-00c3
>> Adapter: PCI adapter
>> Core0 Temp:
>>     temp1_input: 44.000
>>
>> I need to be able to raise the temp1_crit to at least 95 (preferably 97)
>> w/o also raising the temp1_input value.  Unfortunately, I found in my
>> experiments that only the first @+10 is getting used in that compute
>> line.  So, what did I miss in the documents for lm_sensors on this, or
>> who do I need to contact to get this looked into?
>>
>> Regards,
>> Steve
>>
>> On 08/27/2015 04:38 PM, Gilbert Morrow wrote:
>>> BIOS controls the CPU temperature threshold, OS uses it to determine
>>> readings.
>>> I use to overclock a lot in the past, I used water cooling for the old
>> game
>>> boxes. I still have one for an old AMD processor, radiator, fan, and
>>> heatsink water block.
>>> On Aug 27, 2015 3:09 PM, "Stephen Davidson" <gorky at freenet.carleton.ca>
>>> wrote:
>>>
>>>> Greetings.
>>>>
>>>> I have an oldstyle AMD CPU, one of the first generations after the
>>>> legendary "Cook an egg on it". (I tried Googling for one of the videos
>>>> from that era, but no luck in the first couple of pages, sorry).
>>>>
>>>> Normal max operating temp is 95c, but the system does a protective
>>>> shutdown at 90c.  I've tried modifying this in lm_sensors
>>>> /etc/sensors.d, but so far no luck.  The current documentation seems to
>>>> be not current with the current code.  I have an entry:
>>>>
>>>> compute temp1 @+10, at +10
>>>>
>>>> but it seems that:
>>>>  - only the first @+10 is read and is used both for setting critical and
>>>> adjusting display
>>>>  - temp1 is now displaying 10c higher than other sensors.
>>>>
>>>> NOTE: There is generally a 5c temp difference between 'Core0' and Temp1,
>>>> Temp1 being higher.
>>>>
>>>> Any suggestions?
>>>>
>>>> Regards,
>>>> Steve
>>>>
>>>>
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