[Bug 85086] [NVE7] read/write faults leave machine unsuable

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

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https://bugs.freedesktop.org/show_bug.cgi?id=85086

Ilia Mirkin <imirkin-FrUbXkNCsVf2fBVCVOL8/A@public.gmane.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|read/write faults leave     |[NVE7] read/write faults
                   |machine unsuable            |leave machine unsuable

--- Comment #4 from Ilia Mirkin <imirkin-FrUbXkNCsVf2fBVCVOL8/A@public.gmane.org> ---
In an effort to reduce irrelevant information, you've cut out potentially
relevant things. Best to attach unredacted logs...

(a) Is this an optimus setup? If so, can you try booting with nouveau.runpm=0
[this will cause the nvidia card not to auto-suspend when not used]
(b) Please attach a full kernel log, from boot until the errors.

It would appear that the errors are brought on by a channel hang, from which
nouveau recovers in a... less-than-graceful fashion. This is, generally, a
known "issue" (more like 100 inter-related issues). However perhaps you can
update your userspace (specifically mesa), and whatever issue causes the hang
has been fixed in 10.3.1. Upgrading the ddx to 1.0.11 wouldn't hurt either.

As Tobias suggested, if you can identify an action that causes the issue, that
would be extremely helpful.

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