FYI: The script 99funguj in Ubuntu bug #77370 implements a simpler (and 
quicker) workaround that doesn't require heating the CPU until a trip point is 
reached. 
However, one still needs to enable polling so that the fan keeps reacting to 
changes in CPU temperature after resuming from standby, even though this has 
the negative side effects mentioned by voneiden. 

It seems to me that the root cause of the problem is that no ACPI events
are received any more after resuming from standby, and that the noisy
fan is just the easily observable manifestation. I'll gladly provide
additional debugging information from my notebook if someone needs that
to look into the problem.

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Noisy fan after resume on HP 6735s (reproducibility about 20%)
https://bugs.launchpad.net/bugs/343128
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