[Nouveau] [Bug 35374] New: nouveau: nv50, regression "GPU lockup - switching to software fbcon" introduced in 2.6.38-rc8

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=35374

           Summary: nouveau: nv50, regression "GPU lockup - switching to
                    software fbcon" introduced in 2.6.38-rc8
           Product: xorg
           Version: 7.4
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
        AssignedTo: nouveau at lists.freedesktop.org
        ReportedBy: tallica at o2.pl
         QAContact: xorg-team at lists.x.org


Created an attachment (id=44527)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=44527)
dmesg log, 2.6.38 with commit 73412c3854c877e5f37ad944ee8977addde4d35a reverted

There's a regression introduced in kernel >=2.6.38-rc8. It's in nouveau/master
(commit 7972f91c24bb66643d76cf635faea78eb184e6b6) as well. Dmesg shows: "GPU
lockup - switching to software fbcon". I've done a git bisect. The problematic
commit is: 73412c3854c877e5f37ad944ee8977addde4d35a "drm/nouveau: allocate
kernel's notifier object at end of block". I reverted that commit on top of the
2.6.38 to confirm the issue.

Reproducible: always

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