[Bug 80901] [NVCF] PWM fan speed too high

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ@public.gmane.org]

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https://bugs.freedesktop.org/show_bug.cgi?id=80901

--- Comment #26 from Martin Peres <martin.peres-Iz16wY1oaNPLSKGbIzaifA@public.gmane.org> ---
(In reply to K.-P. Schrage from comment #25)
> It seems that I am struck by this very bug as well since several months now.
> 
> Fedora 21, kernel-3.17.7-300.fc21.x86_64 (but it started on Fedora 20,
> around kernel-3.15.5-200.fc20.x86_64)
> 
> Graphics card:
> 01:00.0 VGA compatible controller: NVIDIA Corporation GF108 [GeForce GT 630]
> (rev a1) (prog-if 00 [VGA controller])
>         Subsystem: Micro-Star International Co., Ltd. [MSI] Device 8a90
>         Flags: bus master, fast devsel, latency 0, IRQ 43
>         Memory at f6000000 (32-bit, non-prefetchable) [size=16M]
>         Memory at e8000000 (64-bit, prefetchable) [size=128M]
>         Memory at f0000000 (64-bit, prefetchable) [size=32M]
>         I/O ports at e000 [size=128]
>         Expansion ROM at f7000000 [disabled] [size=512K]
>         Capabilities: [60] Power Management version 3
>         Capabilities: [68] MSI: Enable+ Count=1/1 Maskable- 64bit+
>         Capabilities: [78] Express Endpoint, MSI 00
>         Capabilities: [b4] Vendor Specific Information: Len=14 <?>
>         Capabilities: [100] Virtual Channel
>         Capabilities: [128] Power Budgeting <?>
>         Capabilities: [600] Vendor Specific Information: ID=0001 Rev=1
> Len=024 <?>
>         Kernel driver in use: nouveau
>         Kernel modules: nouveau
> 
> It seems as if problems started with this commit:
> http://lists.freedesktop.org/archives/nouveau/2014-March/016589.html
> At least reverting this patch to the nouveau source is a workaround, see
> discussion on Redhat bugzilla:
> https://bugzilla.redhat.com/show_bug.cgi?id=1121331
> 
> BTW, isn't bug 84721 a duplicate of this one? It is the very same NVIDIA
> controller as mine that is affected.

It depends on your problem. If by "too high", you mean fan at 100% constantly,
then the bug is a duplicate. If you mean the default fan speed is 35% instead
of 30%, then the bugs are not related and this is a bug hijacking :p Please
send your vbios in your answer and I'll or will not advise you to open a new
bug report.

I am currently in the process of moving to another home, but I can still write
code for you to try :)

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