[ltp] Re: ThinkPad T61 (7658CTO) Thermal Sensors

[green]

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On Tue, 2008.07.22, 204, Daniel Castro wrote:
>    So to elaborate more in this:
>    I think I have identified some of the sensors:
>=20
>    dancasmo@BlackBeauty:~$ cat /proc/acpi/ibm/thermal
>    temperatures:    59 50 42 -128 50 -128 25 -128 49 54 50 -128 -128 -128
>    -128 -128
>=20
>    +------------------------------------------------+
>    |  Index in "thermal"   |Location (estimated)    |
>    |-----------------------+------------------------|
>    |           1           |CPU                     |
>    |-----------------------+------------------------|
>    |           2           |MiniPCI                 |
>    |-----------------------+------------------------|
>    |           3           |HDD                     |
>    |-----------------------+------------------------|
>    |           4           |n/a (-128)              |
>    |-----------------------+------------------------|
>    |           5           |Battery 1               |
>    |-----------------------+------------------------|
>    |           6           |n/a (-128)              |
>    |-----------------------+------------------------|
>    |           7           |Battery 2               |
>    |-----------------------+------------------------|
>    |           8           |n/a (-128)              |
>    |-----------------------+------------------------|
>    |           9           |?????                   |
>    |-----------------------+------------------------|
>    |          10           |?????                   |
>    |-----------------------+------------------------|
>    |          11           |?????                   |
>    |-----------------------+------------------------|
>    |          12           |n/a (-128)              |
>    |-----------------------+------------------------|
>    |          13           |n/a (-128)              |
>    |-----------------------+------------------------|
>    |          14           |n/a (-128)              |
>    |-----------------------+------------------------|
>    |          15           |n/a (-128)              |
>    |-----------------------+------------------------|
>    |          16           |n/a (-128)              |
>    +------------------------------------------------+
>=20
>    I still don't know what indexes 9, 10 and 11 are. Anyone knows? Or any
>    ideas how I can figure this out?
>    Also, those temperatures are with the fan off, I have it configured to=
 be
>    off when CPU temp is below 70C and 60C for the rest. Is that safe?

No!  That is likely not safe.  The CPU is, I think, the most=20
temperature-tolerant area in the system.  Watch the other temperatures too.

Although no one really knows what the safe thresholds are for the sensors.

http://www.thinkwiki.org/wiki/How_to_control_fan_speed
http://www.thinkwiki.org/wiki/ACPI_fan_control_script

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