Nouveau - Jul 2008 - [Bug 16792] New: modesetting on NV86: text mode goes blank, machine freeze on gdm stop

http://bugs.freedesktop.org/show_bug.cgi?id=16792

           Summary: modesetting on NV86: text mode goes blank, machine
                    freeze on gdm stop
           Product: xorg
           Version: git
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
        AssignedTo: nouveau at lists.freedesktop.org
        ReportedBy: debian at oursours.net
         QAContact: xorg-team at lists.x.org


Created an attachment (id=17791)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=17791)
X log of gdm session

modesetting on NV86: text mode goes blank, machine freeze on gdm stop

using branches nouveau/master, mesa/drm/modestting-101 and
nouveau/mesa/gallium-0.1.

I reboot in single user mode, modprobe "drm debug=1" and "nouveau
modeset=1".

At this moment, the screen turns blacks but the machine does not freeze. From a
SSH, I can start gdm and it seems to work, though the screen is still black.

When trying to stop gdm, the machine is freezing.

After X start I had many of these lines:

Jul 21 15:48:36 xiong kernel: [  605.062180] [drm] PGRAPH_ERROR - nSource:
PROTECTION_ERROR, nStatus:
Jul 21 15:48:36 xiong kernel: [  605.062APH_ERROR - Ch 2/0 Class 0x502d Mthd
0x08dc APH_ERROR - Ch 2/0 Class 0x502d Mthd 0x08dc Data 0x00000000:0x00000000

(Yeah, I was told not to use the debug option, I typed too fast.)

Adding logs as usual.


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--- Comment #1 from Herv? Cauwelier <debian at oursours.net>  2008-07-21
07:26:01 PST ---
My mistake, the PGRAPH errors occur even without using the modeset.


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--- Comment #2 from Herv? Cauwelier <debian at oursours.net>  2008-07-21
07:29:04 PST ---
Created an attachment (id=17792)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=17792)
syslog


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--- Comment #3 from Herv? Cauwelier <debian at oursours.net>  2008-07-21
11:42:45 PST ---
Created an attachment (id=17804)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=17804)
my NV86 bios image


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--- Comment #4 from Herv? Cauwelier <debian at oursours.net>  2008-07-21
12:21:34 PST ---
Created an attachment (id=17806)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=17806)
a clean syslog with head 625923eb73801659d239aa22f8a46d5cc2460277, trying at
the end to reinsert the module without modeset


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--- Comment #5 from Herv? Cauwelier <debian at oursours.net>  2008-07-27
13:06:10 PST ---
Created an attachment (id=17918)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=17918)
X log ending with "Failed to allocate memory for framebuffer!"

Update: I cannot start X with the nouveau/drm/modesetting-101 branch.

After nouveau is complaining about the LVDS revision table not being currently
supported, it fails in allocating memory for the framebuffer.

After I come back to the master branch, I have to shut down the computer for a
minute before I can start X again.

This is still my 8400M GS, and the nouveau checkout fetched and rebased
regularly.


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--- Comment #6 from Ben Skeggs <skeggsb at gmail.com>  2009-03-12 17:38:06
PST ---
Hows things now?


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--- Comment #7 from Herv? Cauwelier <debian at oursours.net>  2009-03-13
04:56:23 PST ---
I haven't tried since then.

I have a 2.6.28 kernel and the master branch of nouveau. Is a special branch of
drm needed? Or a flag at the kernel boot or in xorg.conf?


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--- Comment #8 from Ben Skeggs <skeggsb at gmail.com>  2009-03-13 15:55:46
PST ---
(In reply to comment #7)
> I haven't tried since then.
> 
> I have a 2.6.28 kernel and the master branch of nouveau. Is a special
branch of
> drm needed? Or a flag at the kernel boot or in xorg.conf?
You need to use the modesetting-gem branch of drm git still.  Just load the
nouveau module with modeset=1.  Nothing is required on the 2D driver side,
it'll detect if kms is in use and act accordingly.
> 

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Herv? Cauwelier <debian at oursours.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|modesetting on NV86: text   |modesetting on NV86: cannot
                   |mode goes blank, machine    |allocate framebuffer
                   |freeze on gdm stop          |




--- Comment #9 from Herv? Cauwelier <debian at oursours.net>  2009-03-18
15:50:41 PST ---
I installed nouveau master, drm modesetting-gem and rebooted.

I modprobed drm, then nouveau with "modeset=1", the screen went black,
like
when X start, then the console came back but at panel native resolution.

I then started GDM but X gave the error I attach.

I then tried to remove the nouveau module but it said it was busy, though
"lsmod" told no other module was using it.

I forgot to save "dmesg" before reboot. It contained many information
about the
DRM. Do you need it?


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Herv? Cauwelier <debian at oursours.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #17791|0                           |1
        is obsolete|                            |
  Attachment #17792|0                           |1
        is obsolete|                            |
  Attachment #17806|0                           |1
        is obsolete|                            |
  Attachment #17918|0                           |1
        is obsolete|                            |




--- Comment #10 from Herv? Cauwelier <debian at oursours.net>  2009-03-18
15:53:18 PST ---
Created an attachment (id=24017)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=24017)
X with nouveau modeset and drm modesetting-gem


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--- Comment #11 from Ben Skeggs <skeggsb at gmail.com>  2009-03-18
22:26:58 PST ---
(In reply to comment #9)
> I installed nouveau master, drm modesetting-gem and rebooted.
> 
> I modprobed drm, then nouveau with "modeset=1", the screen went
black, like
> when X start, then the console came back but at panel native resolution.
Cool, that sounds about right :)
> 
> I then started GDM but X gave the error I attach.
Hmm, the dmesg log would be very useful here (bonus points for loading drm with
"modprobe drm debug=1").
> 
> I then tried to remove the nouveau module but it said it was busy, though
> "lsmod" told no other module was using it.
That's normal, the console is being controlled by nouveau.ko.  You can
unload
the module first if you "echo 0 >
/sys/class/vtconsole/vtcon<n>/bind" first.
What exactly <n> is probably depends on your system, it's 1 for me. 
Also, once
you do that, you won't have a visible console.  Nouveau can't switch
back to
the original resolution yet..
> 
> I forgot to save "dmesg" before reboot. It contained many
information about the
> DRM. Do you need it?
It would be very useful :)
> 

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--- Comment #12 from Herv? Cauwelier <debian at oursours.net>  2009-03-19
02:25:53 PST ---
Created an attachment (id=24036)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=24036)
dmesg with debug=1


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Herv? Cauwelier <debian at oursours.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #24017|0                           |1
        is obsolete|                            |




--- Comment #13 from Herv? Cauwelier <debian at oursours.net>  2009-03-19
02:28:09 PST ---
Created an attachment (id=24037)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=24037)
X log after drm debug=1

I've updated to commit 47c68ee6e4c180c18b8d58c74f12c8f90af9da3d and tested
with
drm debug=1.

X behave the same than yesterday.

Great news though that the modesetting is behaving as expected, even just on
the console.


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Martin Peres <martin.peres at ensi-bourges.fr> changed:

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

--- Comment #14 from Martin Peres <martin.peres at ensi-bourges.fr> ---
Someone forgot to close this bug.

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