reinstalling proprietor driver results in recovery of trip_pont 69000 and
"sensors" detect after cooling lower temperature than 68°C (65)
increasing fan speed at
76°C
84°C
86,5°C ??? (cannot even guess where this one came from)

i do not believe that any of the temperatures are correct because heat build up 
and cooling are too quick
nevertheless proprietor driver has to go

After removal of proprietor driver fan speeds increase at
74°C
84°C

decrease at
79.5°C 
and after a long time (guess 7min) at
69°C to lowest speed

according to dsmeg fan is registered as cooling device 7
/sys/bus/acpi/devices/device:07/subsystem/drivers/fan/PNP0C0B:00/thermal_cooling/subsystem/thermal_zone0
trip_points registered there are the same as in 
/sys/bus/acpi/drivers/thermal/LNXTHERM:01/thermal_zone

48000
57000
75000
84000
92000
100000

Since I am not fluent with any programming stuff i can only guess what happens. 
There is a routine accessing and altering values that it should not alter. 
There is one sensor and one fan on my hp 625 and it is using values from hwmon.
Additional, altering the drivers results in changing sensor values and trip 
points. Though the routine doing all this rubbish has to be connected to this 
process. Whatever it is, it is altering setup procedures because only after 
restart the system is affected.
God am I happy that my cpu has only 55W.
To my understanding there should not be any routine overriding those values. I 
will repeat the procedure and compare dsmeg reports. If i find anything i post 
it here.

Thanks and best regards to all M.Peters

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https://bugs.launchpad.net/bugs/960925

Title:
  cpu resources divided to graphic driver

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