Comment # 28 on bug 1103356 from Takashi Iwai

Weird, indeed.  It's a heisenbug, then.

I wonder, though, why linear_duty debug is printed only once.  It implies that
the method was switched to another one, like NVBIOS_THERM_FAN_TRIP.
But still it doesn't explain why it doesn't update the fan speed...

I refreshed the debug prints to show more data, including BIOS parser.
It's built in OBS home:tiwai:bsc1103356-dbg2 repo.  Please give it a try later
again.