Nouveau - Sep 2014 - [Bug 83587] New: 3.14.18: FAN control: none / external -- 3.16.2: FAN control: PWM

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

-- 
You are receiving this mail because:
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.freedesktop.org/archives/nouveau/attachments/20140907/92da09b0/attachment.html>

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

--- Comment #1 from Ilia Mirkin <imirkin at alum.mit.edu> ---
Was there a question?

Newer kernels have support for things that older kernels don't have support
for... in this case, the fan configuration of your board wasn't supported,
hence the "none" for fan control.

Or did I misunderstand something?

-- 
You are receiving this mail because:
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.freedesktop.org/archives/nouveau/attachments/20140907/0534bf9a/attachment.html>

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

--- Comment #2 from Elimar Riesebieter <riesebie at lxtec.de> ---
Sometimes features of newer kernels are backported for longterm ones. 

It is correct I have had to ask directly for an implementation of fan control
for the GeForce GTX 760.

-- 
You are receiving this mail because:
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.freedesktop.org/archives/nouveau/attachments/20140907/7cb30d0f/attachment.html>

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

Elimar Riesebieter <riesebie at lxtec.de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Severity|normal                      |enhancement

-- 
You are receiving this mail because:
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.freedesktop.org/archives/nouveau/attachments/20140907/dbc47cc1/attachment.html>

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

Ilia Mirkin <imirkin at alum.mit.edu> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |NOTABUG

--- Comment #3 from Ilia Mirkin <imirkin at alum.mit.edu> ---
(In reply to comment #2)
> Sometimes features of newer kernels are backported for longterm ones. 
Nope, never. Bugs are fixed, new features are never backported to stable
kernels.

-- 
You are receiving this mail because:
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.freedesktop.org/archives/nouveau/attachments/20140907/172de15e/attachment.html>

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

--- Comment #4 from Martin Peres <martin.peres at ensi-bourges.fr> ---
(In reply to comment #3)
> (In reply to comment #2)
> > Sometimes features of newer kernels are backported for longterm ones. 
> 
> Nope, never. Bugs are fixed, new features are never backported to stable
> kernels.
Distros pretending to be stable do that so they get "up-to-date"
features with
the same version number. Yeah for frankenkernels!

And people wonder why I don't like such distros :p

-- 
You are receiving this mail because:
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.freedesktop.org/archives/nouveau/attachments/20140907/463f7383/attachment.html>