[Bug 87179] New: [NVE7] Oops while reenabling Optimus dedicated card

[Bug 87179] New: [NVE7] Oops while reenabling Optimus dedicated card

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https://bugs.freedesktop.org/show_bug.cgi?id=87179

            Bug ID: 87179
           Summary: [NVE7] Oops while reenabling Optimus dedicated card
           Product: xorg
           Version: git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
          Assignee: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
          Reporter: tobias.klausmann-AqjdNwhu20eELgA04lAiVw@public.gmane.org
        QA Contact: xorg-team-go0+a7rfsptAfugRpC6u6w@public.gmane.org

Created attachment 110662
  --> https://bugs.freedesktop.org/attachment.cgi?id=110662&action=edit
kernel 3.18 oops

Sometimes while waking the dedicated card, the system oopses and gets
unresponsive (sometimes this hangs the entire graphics system). 
Steam triggers this very easily somehow...

These hangs plague me for a while now, but this is the first hang i could
capture in a whole!

Kernel: 3.18.0, occurred with kernels at least down to 3.16

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[Bug 87179] [NVE7] Oops while reenabling Optimus dedicated card

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https://bugs.freedesktop.org/show_bug.cgi?id=87179

--- Comment #1 from Tobias Klausmann <tobias.klausmann-AqjdNwhu20eELgA04lAiVw@public.gmane.org> ---
Created attachment 110663
  --> https://bugs.freedesktop.org/attachment.cgi?id=110663&action=edit
kernel 3.17 oops

I found an additional oops with 3.17 "yay"

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[Bug 87179] [NVE7] Warning while reenabling Optimus dedicated card

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https://bugs.freedesktop.org/show_bug.cgi?id=87179

Tobias Klausmann <tobias.klausmann-AqjdNwhu20eELgA04lAiVw@public.gmane.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[NVE7] Oops while           |[NVE7] Warning while
                   |reenabling Optimus          |reenabling Optimus
                   |dedicated card              |dedicated card

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[Bug 87179] [NVE7] Warning while reenabling Optimus dedicated card

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https://bugs.freedesktop.org/show_bug.cgi?id=87179

--- Comment #2 from Ben Skeggs <skeggsb-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> ---
Created attachment 110702
  --> https://bugs.freedesktop.org/attachment.cgi?id=110702&action=edit
possible fix

Is this issue creproducible for you?  If so, please give the attached patch a
try and see if it helps!

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[Bug 87179] [NVE7] Warning while reenabling Optimus dedicated card

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https://bugs.freedesktop.org/show_bug.cgi?id=87179

--- Comment #3 from Tobias Klausmann <tobias.klausmann-AqjdNwhu20eELgA04lAiVw@public.gmane.org> ---
Created attachment 110703
  --> https://bugs.freedesktop.org/attachment.cgi?id=110703&action=edit
nouveau errors with "110702: possible fix"

While running with the above patch, several (40+) suspend/resume cycles worked
fine. The initial Warning does not seem to get triggered anymore.

Later on the machine hung while resuming, but recovered from the hang. The
attached log is from that timeframe. ~2 min later X was hanging, not
recovering. Could ssh in, nothing in dmesg.

I'm not sure if this is still the same bug or if i should open yet another one.

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[Bug 87179] [NVE7] Warning while reenabling Optimus dedicated card

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https://bugs.freedesktop.org/show_bug.cgi?id=87179

--- Comment #4 from Ilia Mirkin <imirkin-FrUbXkNCsVf2fBVCVOL8/A@public.gmane.org> ---
Tobias, does this still happen with recent kernels?

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[Bug 87179] [NVE7] Warning while reenabling Optimus dedicated card

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https://bugs.freedesktop.org/show_bug.cgi?id=87179

Tobias Klausmann <tobias.klausmann-AqjdNwhu20eELgA04lAiVw@public.gmane.org> changed:

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

--- Comment #5 from Tobias Klausmann <tobias.klausmann-AqjdNwhu20eELgA04lAiVw@public.gmane.org> ---
Haven't seen that one in a while now, i guess we can safely close this now!

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