[Bug 95429] New: NV46 G72M picture is always distorted on VGA output

[Bug 95429] New: NV46 G72M picture is always distorted on VGA output

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https://bugs.freedesktop.org/show_bug.cgi?id=95429

            Bug ID: 95429
           Summary: NV46 G72M picture is always distorted on VGA output
           Product: xorg
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
          Assignee: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
          Reporter: russianneuromancer-k+OT61UuxXo@public.gmane.org
        QA Contact: xorg-team-go0+a7rfsptAfugRpC6u6w@public.gmane.org

Created attachment 123785
  --> https://bugs.freedesktop.org/attachment.cgi?id=123785&action=edit
photo

On laptops with G72M picture on VGA output is always wavy (please look into
attached photo). That was tested with two laptops (with 7300 Go and 7400 Go)
couple of projectors (800x600) and few displays (up to 1920x1080) - issue is
reproducible with any combination with any Linux that was released for latest
~three years (with Linux 4.6 too). Other issue is that VGA output is always
mirror of internal laptop screen, no matter what settings I set (again, as you
can see on attached photo).

01:00.0 VGA compatible controller: NVIDIA Corporation G72M [GeForce Go 7400]
(rev a1)

Issue is not reproducible with proprietary driver (however this driver have
other issues, like lack of proper V-Sync, and latest KWin is crash on nvidia
304 driver even if all effects disabled).

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[Bug 95429] NV46 G72M picture is always distorted on VGA output

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=95429

--- Comment #1 from russianneuromancer-k+OT61UuxXo@public.gmane.org ---
Created attachment 123786
  --> https://bugs.freedesktop.org/attachment.cgi?id=123786&action=edit
debug dmesg

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[Bug 95429] NV46 G72M picture is always distorted on VGA output

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https://bugs.freedesktop.org/show_bug.cgi?id=95429

--- Comment #2 from Ilia Mirkin <imirkin-FrUbXkNCsVf2fBVCVOL8/A@public.gmane.org> ---
(In reply to russianneuromancer from comment #0)
> latest ~three years (with Linux 4.6 too). Other issue is that VGA output is
> always mirror of internal laptop screen, no matter what settings I set
> (again, as you can see on attached photo).

This leads me to believe that you're not using nouveau. Please provide dmesg +
xorg log from an affected machine.

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[Bug 95429] NV46 G72M picture is always distorted on VGA output

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=95429

--- Comment #3 from russianneuromancer-k+OT61UuxXo@public.gmane.org ---
Created attachment 123790
  --> https://bugs.freedesktop.org/attachment.cgi?id=123790&action=edit
dmesg with Linux 4.4.0-22 from Ubuntu repository without debug

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[Bug 95429] NV46 G72M picture is always distorted on VGA output

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=95429

--- Comment #4 from russianneuromancer-k+OT61UuxXo@public.gmane.org ---
Created attachment 123791
  --> https://bugs.freedesktop.org/attachment.cgi?id=123791&action=edit
Xorg log

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[Bug 95429] NV46 G72M picture is always distorted on VGA output

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https://bugs.freedesktop.org/show_bug.cgi?id=95429

--- Comment #5 from Ilia Mirkin <imirkin-FrUbXkNCsVf2fBVCVOL8/A@public.gmane.org> ---
Hm, well it seems to correctly detect your DVI-I-1 connector and the modes of
the display attached to it. Unfortunately I don't know much about pre-NV50
display details, esp when panels are involved. Hopefully someone else will have
a look.

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[Bug 95429] NV46 G72M picture is always distorted on VGA output

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https://bugs.freedesktop.org/show_bug.cgi?id=95429

--- Comment #6 from russianneuromancer-k+OT61UuxXo@public.gmane.org ---
btw, VGA video output is wavy even before Xorg start - on boot log or splash
screen. And I also forgot to mention that waves doesn't stay still but
continuously move from top to the bottom.

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[Bug 95429] NV46 G72M picture is always distorted on VGA output

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https://bugs.freedesktop.org/show_bug.cgi?id=95429

Martin Peres <martin.peres-GANU6spQydw@public.gmane.org> changed:

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

--- Comment #7 from Martin Peres <martin.peres-GANU6spQydw@public.gmane.org> ---
-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been
closed from further activity.

You can subscribe and participate further through the new bug through this link
to our GitLab instance:
https://gitlab.freedesktop.org/xorg/driver/xf86-video-nouveau/issues/267.

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