Nouveau - Jan 2015 - [Bug 88262] New: 3.19 kernels hang during boot for an NV28 based card

https://bugs.freedesktop.org/show_bug.cgi?id=88262

            Bug ID: 88262
           Summary: 3.19 kernels hang during boot for an NV28 based card
           Product: xorg
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
          Assignee: nouveau at lists.freedesktop.org
          Reporter: bruno at wolff.to
        QA Contact: xorg-team at lists.x.org

Created attachment 112047
  --> https://bugs.freedesktop.org/attachment.cgi?id=112047&action=edit
dmesg output from a successful 3.18 boot

3.19 kernels having been hanging for me during boot for one of my machines. 
This is still happening as of commit dc9319f5a3e1f67d2a2fbf190e30f6d03f569fed
(post rc3). The problem first happens with commit
ad4a362635353f7ceb66f4038269770fee1025fa. I tried reverting
ad4a362635353f7ceb66f4038269770fee1025fa from
dc9319f5a3e1f67d2a2fbf190e30f6d03f569fed, but there were conflicts and I
don't
know enough to properly resolve them.
The hang is early enough that I can't get logging output from the boot.

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Bruno Wolff <bruno at wolff.to> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |bruno at wolff.to

--- Comment #1 from Bruno Wolff <bruno at wolff.to> ---
I filed a bug at kernel.org for this as well:
https://bugzilla.kernel.org/show_bug.cgi?id=91091

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Pierre Moreau <pierre.morrow at free.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|3.19 kernels hang during    |[NV28] 3.19 kernels hang
                   |boot for an NV28 based card |during boot

--- Comment #2 from Pierre Moreau <pierre.morrow at free.fr> ---
You could blacklist nouveau (via /etc/modprobe.d/somefile.conf) and load it
manually once you're logged in. It seems you're using netconsole, but it
only
gets up once nouveau is loaded (apparently the interface is first called enp5s3
and is renamed to eth0 too late (for us)), so loading nouveau manually should
also help you get some logs via netconsole.

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--- Comment #3 from Marcin Slusarz <marcin.slusarz at gmail.com> ---
Should be fixed now.

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c7e873f85fb60b1af589ac1b0c62353cfe0bbb29

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Bruno Wolff <bruno at wolff.to> changed:

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

--- Comment #4 from Bruno Wolff <bruno at wolff.to> ---
Thanks. Next time I suspect a Nouveau bug, I'm going to remember to look
though
the queued up fixes before (or while starting) a bisect. I remember seeing the
summary from the fix a week or so a ago when working with an nv50 issue and
didn't put two and two together. I should have noticed this fix right away
and
tested it to see if it fixed my problem.

Anyway, I tested current mainline and things are fixed. Thanks again.

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