[Bug 99385] New: Nouveau produces soft lockups

[Bug 99385] New: Nouveau produces soft lockups

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https://bugs.freedesktop.org/show_bug.cgi?id=99385

            Bug ID: 99385
           Summary: Nouveau produces soft lockups
           Product: xorg
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
          Assignee: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
          Reporter: celelibi-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
        QA Contact: xorg-team-go0+a7rfsptAfugRpC6u6w@public.gmane.org

Created attachment 128914
  --> https://bugs.freedesktop.org/attachment.cgi?id=128914&action=edit
dmesg log from boot to bug

Nouveau driver seems to produce soft lockups.

The most notable effect is that some syscalls "hangs", the whole system become
very slow and this kind f message appear in every terminals:

NMI watchdog: BUG: soft lockup - CPU#6 stuck for 23s! [kworker/6:2:324]

This seems related to power management, since adding the option runpm=0 doesn't
produce the lockups. This bug can be triggered by many things, including
running commands like lspci.

I attach the dmesg log from boot up to the bug.

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[Bug 99385] Nouveau produces soft lockups

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https://bugs.freedesktop.org/show_bug.cgi?id=99385

--- Comment #1 from celelibi-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org ---
Created attachment 129216
  --> https://bugs.freedesktop.org/attachment.cgi?id=129216&action=edit
acpidump -z -o acpidump.txt

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[Bug 99385] Nouveau produces soft lockups

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https://bugs.freedesktop.org/show_bug.cgi?id=99385

Peter Wu <peter-VTkQYDcBqhK7DlmcbJSQ7g@public.gmane.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |peter-VTkQYDcBqhK7DlmcbJSQ7g@public.gmane.org

--- Comment #2 from Peter Wu <peter-VTkQYDcBqhK7DlmcbJSQ7g@public.gmane.org> ---
Based on your acpidump for an Alienware 15 R3/0GY3V1, BIOS 1.0.8 11/12/2016
with GTX 1070, I found this in ssdt6.dsl:

        Method (PGOF, 1, Serialized)
        {
...
            If (((\_SB.GGIV (0x01030009) == Zero) || (OSYS == 0x07D9)))
            {
...
            }
            Else
            {
                LKDS (PIOF)
            }
...
        }

This is a common pattern that is known to give issues. The "LKDS" part seems to
cause issues, so you want to force the other code path. As OSYS is 2009 (set in
DSDT), try booting with:

 acpi_osi=! acpi_osi="Windows 2009"

See also https://bugzilla.kernel.org/show_bug.cgi?id=156341

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[Bug 99385] Nouveau produces soft lockups

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https://bugs.freedesktop.org/show_bug.cgi?id=99385

--- Comment #3 from celelibi-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org ---
I'm not sure what it means, but this works around the issue as well.

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[Bug 99385] Nouveau produces soft lockups

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https://bugs.freedesktop.org/show_bug.cgi?id=99385

Martin Peres <martin.peres-GANU6spQydw@public.gmane.org> changed:

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

--- Comment #4 from Martin Peres <martin.peres-GANU6spQydw@public.gmane.org> ---
-- 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/316.

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