[ltp] Tracking down a EC firmware bug (fan reading)

Henrique de Moraes Holschuh linux-thinkpad@linux-thinkpad.org
Tue, 3 Oct 2006 11:00:41 -0300

On Tue, 03 Oct 2006, Enrico Tröger wrote:
> I think it has the bug. I patched my kernel(2.6.18 vanilla) module with
> your three-step-patch and it was loaded with experimental=1.
> After booting, cat /proc/acpi/ibm/fan reports the following:
> status:         disabled
> speed:          3439
> commands:       enable, disable
> So, my Thinkpad has the bug?

Yes, the fan is running isn't it?

> What do you mean with "auto mode", where to check it?

Please read http://thinkwiki.org/wiki/How_to_control_fan_speed for more
information.  Your ThinkPad is normally in either "auto" or fan level 7,
depending on the ACPI DSDT deciding that there is a critical thermal limit
being approached or not.

Thanks for the report!

  "One disk to rule them all, One disk to find them. One disk to bring
  them all and in the darkness grind them. In the Land of Redmond
  where the shadows lie." -- The Silicon Valley Tarot
  Henrique Holschuh