Buggy DSDT on Dell Latitude E5400

Dear all,

On a recently bought Dell Latitude E5400 laptop with Debian unstable installed, the fan is constantly working.
This happens although the temperature reported by acpi -v is around 30 degrees Celcius, and although top reports a CPU usage around 1%.

Moreover, when the installed Windows XP is started and the machine is left untouched, the fan remains turned off all the time.

Are these symptoms the consequence of a buggy DSDT which Windows overrides ?
In that case, how can the problem be fixed ?
Is it necessary to disassemble and study the DSDT, or is it possible to somehow fetch the working one presumably used by Windows XP ?

Any help / suggestion warmly appreciated.
Kind regards,
Sebastien.

Hi, sebatien,

please file a bug report at bugzilla.kernel.org
and attach the output of acpidump there.
BTW: you can get the acpidump using the latest
pmtools at:
http://www.lesswatts.org/projects/acpi/utilities.php

thanks,
rui

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Dear Rui, dear all,

Done, it's bug #12231.
Many thanks for your help,
Sébastien.
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Dear all,

As required on list, the problem has been reported at:
http://bugzilla.kernel.org/show_bug.cgi?id=12231
Is there any additional information that could help people in solving this problem ?
Many thanks in advance,
Sébastien.
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