Sri I was able to clone the changes you made and compile and run your
new thermald (with your default config files too).  (BTW - No matter
what I did in my BIOS I couldn't get RAPL to not be locked by the BIOS
but apparently this is a relatively common problem.)  Very Good news: I
was not able to get thermald stuck in the same state as previously,
where it would constrain performance dramatically even once temperatures
had returned to a normal state.  Normally my CPU does not get anywhere
near critical temp (in the 90+C range) but I have found some programs to
get it there.  Once temperatures had returned to 60-69C it took a few
seconds but thermald started giving me performance back, and it seemed
that within 30s it was max performance again.

I then verified that the Ubuntu-provided thermald (1.5.4-2) had the same
terrible behavior, even resorting to idle injection (which got re-
enabled for me since I put your default config files in place), and then
not removing that idle injection once temperatures were in normal range!
(And I waited over a minute too.)  This is a huge deal!  Not sure if you
need to see any debug logs or anything, if you do e-mail me off-ticket,
I should really stop hijacking teo's ticket here, I would have opened
another ticket if these changes did not work but as it is they have and
I also don't think you need to design any other algorithm, this is
working fine.  Any other adjustments I can make by experimenting at the
temperature which thermald kicks in (instead of 80 as reported by my
sensors, I could make it 85 or 90).

teo, I think in order to continue with this they need to know if your OS
is able to see the fan and fan speeds, you would need to run sensors-
detect and sensors to see if you see this, and provide them with
thermald debug logs to continue troubleshooting.

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https://bugs.launchpad.net/bugs/1600599

Title:
  Thermald is totally broken, or its default configuration is

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