Nouveau - Feb 2008 - [Bug 14394] New: [NV4B] Composite broken on 2nd head

http://bugs.freedesktop.org/show_bug.cgi?id=14394

           Summary: [NV4B] Composite broken on 2nd head
           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: chalserogers at gmail.com
         QAContact: xorg-team at lists.x.org


Created an attachment (id=14164)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=14164)
Xorg log

When using metacity's composite manager, windows moved from my primary head
(LVDS) to the second head (DVI-D-0) do not appear at all.  The mouse pointer
appears correctly, and the pointer changes depending on the contents of the
invisible window as normal (ie: a text-caret when over a textbox, etc).

This happened with the switch to metacity 2.21.8.  One of the changes to the
compositor was to use the Composite Overlay Window.  The kwin's compositor
in
KDE4 also exhibits the same behaviour.

Composite works correctly when using xcompmgr, which leads me to suspect that
it's a problem with the COW on the second head.


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--- Comment #1 from Maarten Maathuis <madman2003 at gmail.com>  2008-02-06
14:48:23 PST ---
Did X have a left+right config at startup or was this changed with xrandr (or
some other config app)? I may have a suspicion what the problem is, but i need
to gather some more info.


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--- Comment #2 from Christopher James Halse Rogers <chalserogers at
gmail.com>  2008-02-06 15:41:28 PST ---
This was changed with the command "xrandr --output DVI-D-0 --right-of
LVDS-0".
If you'd like me to check with this set up in xorg.conf, I'll need to
find out
how to do it :).


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--- Comment #3 from Maarten Maathuis <madman2003 at gmail.com>  2008-02-07
00:42:15 PST ---
Please try. This howto is pretty decent
http://wiki.debian.org/XStrikeForce/HowToRandR12


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--- Comment #4 from Christopher James Halse Rogers <chalserogers at
gmail.com>  2008-02-07 13:52:47 PST ---
Right, good guess.

When the dual head setup is specified in xorg.conf, everything works fine. 
Playing around with xrandr in this case, I see:
Switching from right-of => same as => right of: correct behaviour.
Switching from right-of => left-of: correct behaviour.
Switching from right-of => above: buggy behaviour: the screens are correct up
to the original maximum vertical resolution, and broken below it.

It seems the COW is not resized with xrandr changes.


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--- Comment #5 from Maarten Maathuis <madman2003 at gmail.com>  2008-02-08
10:49:11 PST ---
I have some issues with my system that prevent me from fixing this on the very
short term, but i will have a look at this later.


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--- Comment #6 from Maarten Maathuis <madman2003 at gmail.com>  2008-02-11
13:25:10 PST ---
This is a (test) patch against xserver git, so it may not apply perfectly
against against 1.4.x, It's also untested as i have no test application for
the
moment.


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--- Comment #7 from Maarten Maathuis <madman2003 at gmail.com>  2008-02-11
13:26:52 PST ---
Created an attachment (id=14274)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=14274)
An attemp at resizing the composite overlay window.


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--- Comment #8 from Maarten Maathuis <madman2003 at gmail.com>  2008-02-14
09:21:23 PST ---
Are you in a position to try a git xserver, as i cannot reproduce the problem?


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--- Comment #9 from Christopher James Halse Rogers <chalserogers at
gmail.com>  2008-02-14 14:31:03 PST ---
(In reply to comment #8)
> Are you in a position to try a git xserver, as i cannot reproduce the
problem?
> 
I've just applied your patch to Ubuntu's X server (which seems to be a
git
snapshot as of 2008/01/31), and it fixes this.  Sorry for the delay.


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--- Comment #10 from Maarten Maathuis <madman2003 at gmail.com> 
2008-02-15 03:59:49 PST ---
You were running a git xserver before as well?


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--- Comment #11 from Christopher James Halse Rogers <chalserogers at
gmail.com>  2008-02-15 16:41:33 PST ---
(In reply to comment #10)
> You were running a git xserver before as well?
> 
Yes; I was running the same git snapshot, but minus the patch.  The Ubuntu X
packages are merged from Debian experimental I believe, if you're more
familiar
with them.

I haven't tried with a raw build from freedesktop git.  The Ubuntu packages
have a bunch of extra patches applied to them, which may affect things?


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--- Comment #12 from Maarten Maathuis <madman2003 at gmail.com> 
2008-02-16 02:38:32 PST ---
Maybe i'm just not hitting the situation, i don't have a full gnome
desktop
installed, only metacity. I'll have to poke some of the xorg guys about a
few
things before i can call that patch finished.


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Maarten Maathuis <madman2003 at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #14274|0                           |1
        is obsolete|                            |




--- Comment #13 from Maarten Maathuis <madman2003 at gmail.com> 
2008-02-16 13:41:22 PST ---
Created an attachment (id=14357)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=14357)
resize the composite overlay window

A better patch, please test it.


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Maarten Maathuis <madman2003 at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #14357|0                           |1
        is obsolete|                            |




--- Comment #14 from Maarten Maathuis <madman2003 at gmail.com> 
2008-02-16 13:45:19 PST ---
Created an attachment (id=14358)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=14358)
resize the composite overlay window

Made another small change.


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Maarten Maathuis <madman2003 at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #14358|0                           |1
        is obsolete|                            |




--- Comment #15 from Maarten Maathuis <madman2003 at gmail.com> 
2008-02-16 14:56:33 PST ---
Created an attachment (id=14359)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=14359)
resize the composite overlay window

Make the function static.


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Maarten Maathuis <madman2003 at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #14359|0                           |1
        is obsolete|                            |




--- Comment #16 from Maarten Maathuis <madman2003 at gmail.com> 
2008-02-16 15:10:45 PST ---
Created an attachment (id=14360)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=14360)
esize the composite overlay window

Return FALSE when appropriate.


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--- Comment #17 from Christopher James Halse Rogers <chalserogers at
gmail.com>  2008-02-16 17:25:23 PST ---
Confirmed, applied to Ubuntu's packages with a git snapshot as of
2008/01/31.
Everything works fine with the above patch, xrandr resizing breaks
Metacity's
compositor (as described previously) without the patch.


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Maarten Maathuis <madman2003 at gmail.com> changed:

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




--- Comment #18 from Maarten Maathuis <madman2003 at gmail.com> 
2008-02-17 12:37:27 PST ---
Fixed in xserver git.


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