Nouveau - Nov 2009 - [Bug 25223] New: LVDS detected, but disabled

http://bugs.freedesktop.org/show_bug.cgi?id=25223

           Summary: LVDS detected, but disabled
           Product: xorg
           Version: 7.5
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: blocker
          Priority: highest
         Component: Driver/nouveau
        AssignedTo: nouveau at lists.freedesktop.org
        ReportedBy: martix.cz at gmail.com
         QAContact: xorg-team at lists.x.org


Xorg doesn't start after boot. Internal display connected to LVDS fails, but
external display with D-Sub works.
Tested on Fedora 12 LiveCD with nouveau.modeset=1.

Hardware:
http://www.smolts.org/client/show/pub_63cc826b-b57b-401b-ad0c-a27b0cb5b5d3


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--- Comment #1 from Martin Holec <martix.cz at gmail.com>  2009-11-22
05:24:22 PST ---
Created an attachment (id=31382)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=31382)
dmesg


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--- Comment #2 from Martin Holec <martix.cz at gmail.com>  2009-11-22
05:24:47 PST ---
Created an attachment (id=31383)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=31383)
Xorg log


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Martin Holec <martix.cz at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #31382|text/x-log                  |text/plain
          mime type|                            |




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Martin Holec <martix.cz at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #31383|text/x-log                  |text/plain
          mime type|                            |




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Martin Holec <martix.cz at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|LVDS detected, but disabled |LVDS detected, but disabled
                   |                            |on GeForce Go 7300




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--- Comment #3 from Ben Skeggs <skeggsb at gmail.com>  2009-11-22 14:03:38
PST ---
Does the display work with nouveau.modeset=0?  And, what resolution does your
panel have?


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--- Comment #4 from Martin Holec <martix.cz at gmail.com>  2009-11-23
07:29:26 PST ---
No it doesn't. Resolution is 1024x768.


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Ben Skeggs <skeggsb at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED




--- Comment #5 from Ben Skeggs <skeggsb at gmail.com>  2009-11-23 15:22:18
PST ---
The info in the VBIOS about your panel is confusing for nouveau, we end up with
*no* valid method for detecting your panel's mode.

Your VBIOS has a 1024x768 mode listed for your panel, and nouveau detects that
it should use it if it's using those mode tables.  However, another VBIOS
table
tells nouveau to *not* use those mode tables.  I'll attach
panel-strap-mode.diff to force the use of the tables.

Now, the entry for your panel gives a valid index into the DDC table so it's
possible it reports an EDID that we should use.  I suspect this is probably the
case here, and we make a bad decision on when to use DDC on your card.  I'll
attach panel-ddc-mode.diff for this.

Can you try each patch separately and report which (if any) work for you.

Thanks!


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--- Comment #6 from Ben Skeggs <skeggsb at gmail.com>  2009-11-23 15:23:09
PST ---
Created an attachment (id=31425)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=31425)
Forcibly try DDC on LVDS if i2c table index valid


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--- Comment #7 from Ben Skeggs <skeggsb at gmail.com>  2009-11-23 15:24:06
PST ---
Created an attachment (id=31426)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=31426)
Force the use of strap-based FP mode if present, and fp_no_ddc is true


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--- Comment #8 from Ben Skeggs <skeggsb at gmail.com>  2009-12-03 02:59:42
PST ---
Any update?  This should be fixed in latest git too..


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Philipp Kerling <k.philipp at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |k.philipp at gmail.com




--- Comment #9 from Philipp Kerling <k.philipp at gmail.com>  2009-12-25
07:00:20 PST ---
(In reply to comment #8)
> Any update?  This should be fixed in latest git too..
I have a similar, if not the same problem. Your second patch already seems to
be in git, and I also tried applying your first patch, but nothing changes. I
have tried with both modeset=0 and modeset=1, Xorg.0.log and dmesg attached
respectively.


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--- Comment #10 from Philipp Kerling <k.philipp at gmail.com>  2009-12-25
07:08:46 PST ---
Created an attachment (id=32292)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=32292)
log with modeset=0


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--- Comment #11 from Philipp Kerling <k.philipp at gmail.com>  2009-12-25
07:09:35 PST ---
Created an attachment (id=32293)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=32293)
log with modeset=1


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Philipp Kerling <k.philipp at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #32292|text/x-log                  |text/plain
          mime type|                            |




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Philipp Kerling <k.philipp at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #32293|text/x-log                  |text/plain
          mime type|                            |




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--- Comment #12 from Lucas Stach <dev at lynxeye.de> 2011-02-15 02:53:37
PST ---
This report seems to be against a very old version of nouveau. Is this still an
issue with recent nouveau?

If we get no status update within one month I will close this bug as
unreproducible.

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Lucas Stach <dev at lynxeye.de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |INVALID

--- Comment #13 from Lucas Stach <dev at lynxeye.de> 2011-03-31 03:23:44
PDT ---
Closing as we got no new info from reporter and the bug is against ancient
version of nouveau.

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