[Bug 83587] New: 3.14.18: FAN control: none / external -- 3.16.2: FAN control: PWM - bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ

From: bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ@public.gmane.org
To: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
Subject: [Bug 83587] New: 3.14.18: FAN control: none / external -- 3.16.2: FAN control: PWM
Date: Sun, 07 Sep 2014 15:33:39 +0000	[thread overview]
Message-ID: <bug-83587-8800@http.bugs.freedesktop.org/> (raw)

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

          Priority: medium
            Bug ID: 83587
          Assignee: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
           Summary: 3.14.18: FAN control: none / external -- 3.16.2: FAN
                    control: PWM
        QA Contact: xorg-team-go0+a7rfsptAfugRpC6u6w@public.gmane.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: riesebie-xZYEWGoilGM@public.gmane.org
          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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