[Nouveau] [Bug 83587] New: 3.14.18: FAN control: none / external -- 3.16.2: FAN control: PWM

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=83587

          Priority: medium
            Bug ID: 83587
          Assignee: nouveau at lists.freedesktop.org
           Summary: 3.14.18: FAN control: none / external -- 3.16.2: FAN
                    control: PWM
        QA Contact: xorg-team at lists.x.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: riesebie at lxtec.de
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: unspecified
         Component: Driver/nouveau
           Product: xorg

Created attachment 105861
  --> https://bugs.freedesktop.org/attachment.cgi?id=105861&action=edit
dmesg and vbios tared

My gpu:  NVIDIA Corporation GK104 [GeForce GTX 760]

Running kernel 3.14.18 I can't control fanspeed. There are no pwm1 files in
/sys as mentioned in
https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/tree/Documentation/thermal/nouveau_thermal.
fan1 is always at maximum, while the temp1 is around 37°C.

Running kernel 3.16.2 with the same .config everything runs smooth (fan1 720
RPM, temp1 +39°C).

The most important difference in dmesg is:
3.14.18: 
nouveau  [  PTHERM][0000:01:00.0] FAN control: none / external

3.16.2: 
nouveau  [  PTHERM][0000:01:00.0] FAN control: PWM

dmesg | grep nouveau attached

Thanks in advance

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