Nouveau - Mar 2011 - [Bug 35374] New: nouveau: nv50, regression "GPU lockup - switching to software fbcon" introduced in 2.6.38-rc8

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

-- 
Configure bugmail: https://bugs.freedesktop.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.

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

--- Comment #1 from Micha? Lipski <tallica at o2.pl> 2011-03-16 16:44:28
PDT ---
Created an attachment (id=44528)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=44528)
dmesg log, 2.6.38-rc7, no GPU lockup information

-- 
Configure bugmail: https://bugs.freedesktop.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.

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

--- Comment #2 from Micha? Lipski <tallica at o2.pl> 2011-03-16 16:45:17
PDT ---
Created an attachment (id=44529)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=44529)
dmesg log, 2.6.38-rc8, GPU lockup

-- 
Configure bugmail: https://bugs.freedesktop.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.

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

--- Comment #3 from Micha? Lipski <tallica at o2.pl> 2011-03-18 10:56:19
PDT ---
Created an attachment (id=44589)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=44589)
As suggested, dmesg log 2.6.38 with drm.debug=14 3

-- 
Configure bugmail: https://bugs.freedesktop.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.

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

Marcin Slusarz <marcin.slusarz at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #44527|application/octet-stream    |text/plain
          mime type|                            |

-- 
Configure bugmail: https://bugs.freedesktop.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.

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

Marcin Slusarz <marcin.slusarz at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #44528|application/octet-stream    |text/plain
          mime type|                            |

-- 
Configure bugmail: https://bugs.freedesktop.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.

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

Marcin Slusarz <marcin.slusarz at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #44529|application/octet-stream    |text/plain
          mime type|                            |

-- 
Configure bugmail: https://bugs.freedesktop.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.

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

Marcin Slusarz <marcin.slusarz at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #44589|application/octet-stream    |text/plain
          mime type|                            |
  Attachment #44589|20110318-demesg-2.6.38      |20110318-dmesg-2.6.38
           filename|                            |

-- 
Configure bugmail: https://bugs.freedesktop.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.

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

EoD <EoD at xmw.de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |EoD at xmw.de

--- Comment #4 from EoD <EoD at xmw.de> 2011-04-21 18:27:42 PDT ---
I can confirm a similiar bug. But my system completely locks up, that's why
I
can't provide you with a proper dmesg log (I could make a picture though).

I also did a bisect and ended up with the same commit
73412c3854c877e5f37ad944ee8977addde4d35a. I got an AGP GeForce 7600 GT (NV40 -
not NV50!).

Do you require further information?

-- 
Configure bugmail: https://bugs.freedesktop.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.

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

EoD <EoD at xmw.de> changed:

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

--- Comment #5 from EoD <EoD at xmw.de> 2011-04-21 19:48:11 PDT ---
Nevermind, this bug has been fixed by a18d89ca026140eb8ac4459bf70a01c571dd9a32
(2.6.39-rc2+).

-- 
Configure bugmail: https://bugs.freedesktop.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.

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

Marcin Slusarz <marcin.slusarz at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |nigel at tuxonice.net

--- Comment #6 from Marcin Slusarz <marcin.slusarz at gmail.com>
2011-04-22 07:36:32 PDT ---
*** Bug 36248 has been marked as a duplicate of this bug. ***

-- 
Configure bugmail: https://bugs.freedesktop.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.

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

Marcin Slusarz <marcin.slusarz at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ghutzl at web.de

--- Comment #7 from Marcin Slusarz <marcin.slusarz at gmail.com>
2011-04-22 07:37:10 PDT ---
*** Bug 36330 has been marked as a duplicate of this bug. ***

-- 
Configure bugmail: https://bugs.freedesktop.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.