Nouveau - Jun 2019 - [Bug 110997] New: NV50 fan runs at full speed after resume from suspend on kernels 5.1.8, 4.19.49

https://bugs.freedesktop.org/show_bug.cgi?id=110997

            Bug ID: 110997
           Summary: NV50 fan runs at full speed after resume from suspend
                    on kernels 5.1.8, 4.19.49
           Product: xorg
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
          Assignee: nouveau at lists.freedesktop.org
          Reporter: m.meledandri at gmail.com
        QA Contact: xorg-team at lists.x.org

Created attachment 144635
  --> https://bugs.freedesktop.org/attachment.cgi?id=144635&action=edit
vbios.rom

As of stable kernels 5.1.8 and 4.19.49, the GTX 260 fan runs at full speed
after resuming from suspend.

This behavior regressed as of commit 342406e4fbba9a174125fbfe6aeac3d64ef90f76
drm/nouveau/i2c: Disable i2c bus access after ->fini()
https://lkml.org/lkml/2019/6/7/673

Reverting this single commit when building the respective stable kernels fixes
the fan speed issue.

$ lspci -nn -d 10de:
01:00.0 VGA compatible controller [0300]: NVIDIA Corporation GT200 [GeForce GTX
260] [10de:05e2] (rev a1)

Discussion on Nouveau mailing list:
https://lists.freedesktop.org/archives/nouveau/2019-June/032620.html

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https://bugs.freedesktop.org/show_bug.cgi?id=110997

--- Comment #1 from Lyude Paul <lyude at redhat.com> ---
Created attachment 144637
  --> https://bugs.freedesktop.org/attachment.cgi?id=144637&action=edit
Fix for Tesla i2c regression

Hi! Turns out I actually have one of these GPUs in my drawer, so I was able to
reproduce this issue with no problems. Could you verify that the following
patch fixes your issue? If so, I'll add your Tested-by and send it out onto
the
nouveau ML

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Lyude Paul <lyude at redhat.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |NEEDINFO

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--- Comment #2 from Marc Meledandri <m.meledandri at gmail.com> ---
Hi! Thanks so much for the quick turnaround on this one. Great that you had a
card on hand to test with.

I can confirm that this patch applied against stable kernel 5.1.15 resolves the
fan speed issue when resuming from suspend.

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Martin Peres <martin.peres at free.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |RESOLVED
         Resolution|---                         |MOVED

--- Comment #3 from Martin Peres <martin.peres at free.fr> ---
-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been
closed from further activity.

You can subscribe and participate further through the new bug through this link
to our GitLab instance:
https://gitlab.freedesktop.org/xorg/driver/xf86-video-nouveau/issues/492.

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