Nouveau - Aug 2012 - [Bug 53566] New: bisected regression 3.5+ kernel

https://bugs.freedesktop.org/show_bug.cgi?id=53566

             Bug #: 53566
           Summary: bisected regression 3.5+ kernel
    Classification: Unclassified
           Product: xorg
           Version: unspecified
          Platform: All
        OS/Version: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: Driver/nouveau
        AssignedTo: nouveau at lists.freedesktop.org
        ReportedBy: vlad.kvs at gmail.com
         QAContact: xorg-team at lists.x.org


It seems that there is a regression present in 3.5+ kernels with nouveau on GTX
560 card, X does not start and artifact present during boot (rectange on top
right). Reverting commit below resolves issue, X can be started and artifact is
gone. Attached is the kern.log from machine booted with drm.debug=0x04


1a46098e910b96337f0fe3838223db43b923bad4 is the first bad commit
commit 1a46098e910b96337f0fe3838223db43b923bad4                                 
Author: Ben Skeggs <bskeggs at redhat.com>
Date:   Fri May 4 15:17:28 2012 +1000                                           

    drm/nvc0/ttm: use copy engines for async buffer moves                       

    Signed-off-by: Ben Skeggs <bskeggs at redhat.com>

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https://bugs.freedesktop.org/show_bug.cgi?id=53566

--- Comment #1 from Vlad K <vlad.kvs at gmail.com> 2012-08-16 02:40:46 UTC
---
Created attachment 65623
  --> https://bugs.freedesktop.org/attachment.cgi?id=65623
kern.log

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https://bugs.freedesktop.org/show_bug.cgi?id=53566

mog55356 at huskies.bloomu.edu changed:

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

--- Comment #2 from mog55356 at huskies.bloomu.edu 2012-08-18 23:39:51 UTC ---
Based on your description of the problem and the attached kern.log, this seems
to be a duplicate of my bug, number 53101. Thanks for fixing the regression.
Hopefully your patch gets accepted upstream and gets integrated into distro
kernels sooner rather than later.

https://bugs.freedesktop.org/show_bug.cgi?id=53101https://bugs.freedesktop.org/show_bug.cgi?id=53101

*** This bug has been marked as a duplicate of bug 53101 ***

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Ben Skeggs <skeggsb at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
         Resolution|DUPLICATE                   |
         AssignedTo|nouveau at lists.freedesktop.o |skeggsb at gmail.com
                   |rg                          |

--- Comment #3 from Ben Skeggs <skeggsb at gmail.com> 2012-08-27 06:34:24
UTC ---
Created attachment 66162
  --> https://bugs.freedesktop.org/attachment.cgi?id=66162
restrict pce usage based on punits values

Re-opening as the bug this was marked a duplicate of is a mess and could
possibly be multiple issues.

I've attached a patch which should help at least users with NVCE (GF114)
chipsets.

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