[ltp] [T400] Tweaking temperature range for thermal sensors
Fri, 8 Jun 2012 22:45:29 +0100
On 8 June 2012 22:41, Chris Schumann <firstname.lastname@example.org> wrote:
> On 6/8/12 4:31 PM, Mateusz Loskot wrote:
>> On 8 June 2012 21:51, Chris Schumann<email@example.com> =C2=A0wrote:
>>> On 6/8/12 3:41 PM, Mateusz Loskot wrote:
>>>> I'm tweaking thermal sensors control for Arch Linux on my T400.
>>>> I use thinkpad_acpi module.
>>>> I either set fan level manaly ACPI or use thinkfan utility.
>>>> I'm wondering, what is a typical range of temperature for HDD
>>>> during not HDD intensive tasks.
>>>> AFAIK, temperature of 50C or higher is dangerous for HDD.
>>>> Temperature range I have been observing on my laptop varies
>>>> between 36C and 43C. Does it sound right?
>>>> Could anyone point to any documentation regarding this?
>>>> I use Seagate Momentus 750 GB 7200 rpm (ST9750420AS)
>>>> p.s. I asked similar question on Thinkpad ml:
>>> Specs for that drive:
>>> TL;DR: operating temp is 0 to 60C.
>> Thanks for reminding me to look at the obvious document.
>> It confirms the normal range, but it doesn't say anything about timing.
>> For example, is constant temperature at level of 40-45C for most of
>> operating time fine or too high?
>> I'm also trying to figure out what level of fan speed should I switch
>> for HDD temp<40C, what level to 40-45C, and what level>45C, etc.
> With that document, Seagate is warranting that the drive will operate
> correctly at 60C indefinitely. There is no note about duty cycle, or abou=
> duration at temperature. To me (who is not a lawyer), they have no caveat=
> would not change my fan based on HDD temperature until it gets close to 6=
That makes perfect sense to me.
> FWIW, I have a T400 and run Fedora. I have never checked my HDD temperatu=
> or adjusted the fan thresholds.
And this is the voice of experience I've been looking for :)
I'm going to leave the thinkpad_acpi to set the fan level to auto and forge=
Mateusz Loskot, http://mateusz.loskot.net