[Nouveau] [Bug 74492] New: v3.13-rc8 nv4e + msi = random lockups

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=74492

          Priority: medium
            Bug ID: 74492
          Assignee: nouveau at lists.freedesktop.org
           Summary: v3.13-rc8 nv4e + msi = random lockups
        QA Contact: xorg-team at lists.x.org
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: ronald645 at gmail.com
          Hardware: Other
            Status: NEW
           Version: git
         Component: Driver/nouveau
           Product: xorg

Created attachment 93341
  --> https://bugs.freedesktop.org/attachment.cgi?id=93341&action=edit
Full dmesg of a clean boot

Kind of looks like bug #73445.

For me, it happens:

- almost at random with intervals of hours ranging to days (dammit...)
- not (yet) in OpenGL apps (I don't play games anymore)
- hangs in firefox , evince
- happens while scrolling but also happens during 'stationary' display

The symptoms are:

- relatively small corruption (10 %) which changes over time somewhat slightly
- disk writes only happen in periodic spurs with long pauses (SysRQ + S) did
not help

Eventually I'm dumped to terminal with an oops, but I don't see anything
nouveau related in there. Attaching it anyway.

nouveau.config=NvMSI=0 'fixes' it. Or let me put it this way: It never occurred
while using this parameter.

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