[Bug 15350] New: randr12: VGA-0 always reported as "disconnected"

[Bug 15350] New: randr12: VGA-0 always reported as "disconnected"

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

http://bugs.freedesktop.org/show_bug.cgi?id=15350

           Summary: randr12: VGA-0 always reported as "disconnected"
           Product: xorg
           Version: git
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
        AssignedTo: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
        ReportedBy: jorton-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org
         QAContact: xorg-team-go0+a7rfsptAfugRpC6u6w@public.gmane.org


Created an attachment (id=15678)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=15678)
xorg.conf

I'm using nouveau from git with Fedora Raw Hide-ish Xorg, on a laptop with:

00:05.0 VGA compatible controller: nVidia Corporation C51 [Geforce 6150 Go]
(rev a2)

the LVDS works fine, but I can't get the VGA output to work.  xrandr -q always
reports "VGA-0 disconnected".


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[Bug 15350] randr12: VGA-0 always reported as "disconnected"

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http://bugs.freedesktop.org/show_bug.cgi?id=15350





--- Comment #1 from Joe Orton <jorton-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>  2008-04-04 08:30:28 PST ---
Created an attachment (id=15679)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=15679)
Xorg.0.log


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[Bug 15350] randr12: VGA-0 always reported as "disconnected"

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http://bugs.freedesktop.org/show_bug.cgi?id=15350





--- Comment #2 from Joe Orton <jorton-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>  2008-04-04 08:31:31 PST ---
Created an attachment (id=15680)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=15680)
xrandr -q output


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[Bug 15350] randr12: VGA-0 always reported as "disconnected"

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http://bugs.freedesktop.org/show_bug.cgi?id=15350





--- Comment #3 from Joe Orton <jorton-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>  2008-04-04 08:32:37 PST ---
I added the:

        Option "Monitor-LVDS" "Laptop LCD"
        Option "Monitor-VGA-0" "External VGA"

& associated Monitor sections to xorg.conf in an attempt to force detection of
the VGA output, but it didn't make any difference.


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[Bug 15350] randr12: VGA-0 always reported as "disconnected"

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http://bugs.freedesktop.org/show_bug.cgi?id=15350





--- Comment #4 from Maarten Maathuis <madman2003-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>  2008-04-04 08:39:49 PST ---
Is your monitor DDC capable?


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[Bug 15350] randr12: VGA-0 always reported as "disconnected"

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http://bugs.freedesktop.org/show_bug.cgi?id=15350





--- Comment #5 from Joe Orton <jorton-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>  2008-04-04 09:05:37 PST ---
Yes, I've tried with two separate LCD panels.


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[Bug 15350] randr12: VGA-0 always reported as "disconnected"

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http://bugs.freedesktop.org/show_bug.cgi?id=15350


Stuart Bennett <sb476-KWPb1pKIrIJaa/9Udqfwiw@public.gmane.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |sb476-KWPb1pKIrIJaa/9Udqfwiw@public.gmane.org




--- Comment #6 from Stuart Bennett <sb476-KWPb1pKIrIJaa/9Udqfwiw@public.gmane.org>  2008-04-04 13:31:10 PST ---
If you bludgeon the ext vga into connectedness (say, by adding "return
XF86OutputStatusConnected;" at the top of nv_analog_output_detect in
nv_output.c), any joy? If not, a log of attempting that would be good.


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[Bug 15350] randr12: VGA-0 always reported as "disconnected"

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http://bugs.freedesktop.org/show_bug.cgi?id=15350





--- Comment #7 from Joe Orton <jorton-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>  2008-04-04 14:10:06 PST ---
Earlier I tried changing that very function to return XF86OutputStatusUnknown
in the fall-through case rather than Disconnected; would you expect that to
have a similar effect?

It seemed a little better; the monitor displayed a blank screen rather than
screaming "omg no input"; it didn't fetch the EDID info though.  I added
debugging printfs to nv_get_edid to see where it was falling out, and it was:

        ddc_mon = xf86OutputGetEDID(output, nv_output->pDDCBus);
        if (!ddc_mon) {

returning ddc_mon == NULL here.  I'm off to a conference for all of next week
so may not be able to play with this any more for a while.  Suggestions on how
to debug further (or to tell me I'm simply screwing up the config!) welcome.


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[Bug 15350] randr12: VGA-0 always reported as "disconnected"

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

http://bugs.freedesktop.org/show_bug.cgi?id=15350





--- Comment #8 from Stuart Bennett <sb476-KWPb1pKIrIJaa/9Udqfwiw@public.gmane.org>  2008-04-04 14:38:11 PST ---
Last time I lookked, "Unknown" outputs were only used if nothing could be found
as definitely connected -- since the LVDS *is* connected, you lose. Saying it
is definitely connected should make the xserver use its pool of default modes.

I'm not too worried yet about the lack of ddc, as I strongly suspect (having
looked at a C51 bios image) that the integrated chipset uses a different set of
regs to read/write I2C, hence ddc is broken. Before fixing that though, I'd
like to be convinced that using the xserver's fallback default modes we can get
the screen lit up without additional trickery being required.


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[Bug 15350] randr12: VGA-0 always reported as "disconnected"

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http://bugs.freedesktop.org/show_bug.cgi?id=15350





--- Comment #9 from Stuart Bennett <sb476-KWPb1pKIrIJaa/9Udqfwiw@public.gmane.org>  2008-04-26 17:15:48 PST ---
Hi, any luck with trying to force a connected status as described in comment 6?


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[Bug 15350] randr12: VGA-0 always reported as "disconnected"

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http://bugs.freedesktop.org/show_bug.cgi?id=15350





--- Comment #10 from Joe Orton <jorton-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>  2008-04-29 06:02:29 PST ---
Created an attachment (id=16235)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=16235)
new Xorg log


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[Bug 15350] randr12: VGA-0 always reported as "disconnected"

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http://bugs.freedesktop.org/show_bug.cgi?id=15350





--- Comment #11 from Joe Orton <jorton-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>  2008-04-29 06:03:33 PST ---
Created an attachment (id=16236)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=16236)
debugging diff


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[Bug 15350] randr12: VGA-0 always reported as "disconnected"

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http://bugs.freedesktop.org/show_bug.cgi?id=15350





--- Comment #12 from Joe Orton <jorton-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>  2008-04-29 06:07:06 PST ---
Sorry about the delay.

I've attached the diff I'm using, and the log which results, same config as
above.  The results are the same: nothing is displayed on the monitor, but the
monitor is not screaming "no input" any more.  (and e.g. after forcing a mode
change with xrandr, the monitor flicked up "Auto adjust" but then carried on
displaying nothing)


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[Bug 15350] randr12: VGA-0 always reported as "disconnected"

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http://bugs.freedesktop.org/show_bug.cgi?id=15350


Joe Orton <jorton-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #16235|text/x-log                  |text/plain
          mime type|                            |




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[Bug 15350] randr12: VGA-0 always reported as "disconnected"

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http://bugs.freedesktop.org/show_bug.cgi?id=15350





--- Comment #13 from Stuart Bennett <sb476-KWPb1pKIrIJaa/9Udqfwiw@public.gmane.org>  2008-04-29 06:43:29 PST ---
I'm beginning to suspect that something in your xorg conf is working against
you; your initial log claims no modes exist for VGA-0, and your new log manages
to find a 1360x768 mode, which is quite special. Maybe try without the
additional Monitor sections, and/or add something like

Modes           "1024x768" "800x600" "640x480"

inside the Display subsection of your Screen section. Bug 15729 (same chipset
as this bug) manages to use the load detection stuff correctly (although it
obviously only uses a pool of generic modes), so that ought to work here too.

That said, there's now a C51 DDC patch in the same bug which will hopefully fix
your DDC too.


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[Bug 15350] randr12: VGA-0 always reported as "disconnected"

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http://bugs.freedesktop.org/show_bug.cgi?id=15350





--- Comment #14 from Joe Orton <jorton-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>  2008-05-01 08:12:08 PST ---
Created an attachment (id=16300)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=16300)
current config


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[Bug 15350] randr12: VGA-0 always reported as "disconnected"

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http://bugs.freedesktop.org/show_bug.cgi?id=15350





--- Comment #15 from Joe Orton <jorton-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>  2008-05-01 08:12:46 PST ---
Created an attachment (id=16301)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=16301)
current log


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[Bug 15350] randr12: VGA-0 always reported as "disconnected"

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http://bugs.freedesktop.org/show_bug.cgi?id=15350





--- Comment #16 from Joe Orton <jorton-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>  2008-05-01 08:19:33 PST ---
I've applied the patch from Bug 15729 and this seems to be getting the DDC info
correctly from the (Dell) panel - nice work! It's also not falling through to
the debugging force-connected hack any more.

I'm still not getting any output on the VGA head, though.

Attached current config/log.

(I've no idea why it likes 1360x768.  One of the three panels I have ever tried
testing with uses that as a native resolution; the only one not currently in
the same room as the laptop!)


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[Bug 15350] randr12: VGA-0 always reported as "disconnected"

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--- Comment #17 from Stuart Bennett <sb476-KWPb1pKIrIJaa/9Udqfwiw@public.gmane.org>  2008-05-01 11:16:46 PST ---
Looking over your log, it seems you're using a checkout of the nouveau ddx
that's around a month old. In the intervening period there have been several
commits which could affect issues of this sort, so it's worth doing future
testing against the code in git (the git code also has the C51 DDC patch
applied).

Please also test with   Option "ModeDebug" "On"   in the Device section of your
xorg.conf to generate a more verbose log, and when in X, see if setting some
different modes helps: run xrandr to see a list of available resolutions for
VGA-0, then set one using xrandr --output VGA-0 --mode 800x600 (for an 800x600
mode).


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[Bug 15350] randr12: VGA-0 always reported as "disconnected"

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--- Comment #18 from Pekka Paalanen <pq-X3B1VOXEql0@public.gmane.org>  2009-08-09 00:45:01 PST ---
Joe, any news on this issue?


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--- Comment #19 from Joe Orton <jorton-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>  2009-08-09 01:36:08 PST ---
Sorry, the laptop on which I saw this bug joined the bit bucket in the sky a
while back.  Feel free to close out if you think appropriate.


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[Bug 15350] randr12: VGA-0 always reported as "disconnected"

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http://bugs.freedesktop.org/show_bug.cgi?id=15350


Pekka Paalanen <pq-X3B1VOXEql0@public.gmane.org> changed:

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




--- Comment #20 from Pekka Paalanen <pq-X3B1VOXEql0@public.gmane.org>  2009-08-09 01:44:06 PST ---
Okay, thanks. Closing.


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