[Bug 37781] New: Major redraw/flicker issues on rv350 after exiting fullscreen app with compiz running

[Bug 37781] New: Major redraw/flicker issues on rv350 after exiting fullscreen app with compiz running

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=37781

           Summary: Major redraw/flicker issues on rv350 after exiting
                    fullscreen app with compiz running
           Product: Mesa
           Version: git
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/r300
        AssignedTo: dri-devel@lists.freedesktop.org
        ReportedBy: oreaus@gmail.com


With default packages in ubuntu natty 11.04, there is a problem where running
and exiting a fullscreen application with compiz running causes major
redraw/refresh flickering issues. They go away after restarting compiz, but
start again reliably after exiting any fullscreen GL app. Here are the bisect
results:

2a95568f64a6641a49a2d4855272e9be2ac2db6d is the first bad commit
commit 2a95568f64a6641a49a2d4855272e9be2ac2db6d
Author: Kenneth Graunke <kenneth@whitecape.org>
Date:   Wed May 11 07:54:57 2011 -0700

    i965: Avoid register coalescing away MATH workarounds on Ivybridge.

    The MATH instruction cannot handle source modifiers, even on Gen7.
    So, apply this workaround for Sandybridge on Ivybridge as well.

    Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
    Reviewed-by: Eric Anholt <eric@anholt.net>

:040000 040000 9cb73cbd09661d6ca745d42fa4aac07963d439b2
2b1804644fe873d2b054645c8e8d5a435d3cbe75 M    src


As a side note, the problem is actually worse in mesa current master, where it
does not require triggering, but instead is flickering right after X/compiz
start the first time. I plan to bisect between the problem commit here and
master next to find out what causes it to get worse.

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[Bug 37781] Major redraw/flicker issues on rv350 after exiting fullscreen app with compiz running

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=37781

--- Comment #1 from Scott Moreau <oreaus@gmail.com> 2011-05-31 02:05:51 PDT ---
I probably should mention this is with RV350..

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[Bug 37781] Major redraw/flicker issues on rv350 after exiting fullscreen app with compiz running

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=37781

Scott Moreau <oreaus@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Severity|normal                      |major
           Priority|medium                      |high

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[Bug 37781] Major redraw/flicker issues on rv350 after exiting fullscreen app with compiz running

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=37781

--- Comment #2 from Michel Dänzer <michel@daenzer.net> 2011-05-31 02:34:43 PDT ---
(In reply to comment #2)
> With default packages in ubuntu natty 11.04, there is a problem where running
> and exiting a fullscreen application with compiz running causes major
> redraw/refresh flickering issues. They go away after restarting compiz, but
> start again reliably after exiting any fullscreen GL app.

Sounds like bug 35452.


> Here are the bisect results:
> 
> 2a95568f64a6641a49a2d4855272e9be2ac2db6d is the first bad commit
> commit 2a95568f64a6641a49a2d4855272e9be2ac2db6d
> Author: Kenneth Graunke <kenneth@whitecape.org>
> Date:   Wed May 11 07:54:57 2011 -0700
> 
>     i965: Avoid register coalescing away MATH workarounds on Ivybridge.

As Dave Airlie pointed out on IRC, that commit can't possibly have any effect
on r300g.


> As a side note, the problem is actually worse in mesa current master, where it
> does not require triggering, but instead is flickering right after X/compiz
> start the first time.

Sounds like a different problem. Try current Git again first, there have been
some fixes for intermittent Gallium texture format related regressions.

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[Bug 37781] Major redraw/flicker issues on rv350 after exiting fullscreen app with compiz running

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=37781

--- Comment #3 from Scott Moreau <oreaus@gmail.com> 2011-05-31 03:55:21 PDT ---
On Tue, May 31, 2011 at 3:34 AM, <bugzilla-daemon@freedesktop.org> wrote:

> https://bugs.freedesktop.org/show_bug.cgi?id=37781
>
> --- Comment #2 from Michel Dänzer <michel@daenzer.net> 2011-05-31 02:34:43
> PDT ---
> (In reply to comment #2)
> > With default packages in ubuntu natty 11.04, there is a problem where
> running
> > and exiting a fullscreen application with compiz running causes major
> > redraw/refresh flickering issues. They go away after restarting compiz,
> but
> > start again reliably after exiting any fullscreen GL app.
>
> Sounds like bug 35452.
>
Yes, it does.

>
>
> > Here are the bisect results:
> >
> > 2a95568f64a6641a49a2d4855272e9be2ac2db6d is the first bad commit
> > commit 2a95568f64a6641a49a2d4855272e9be2ac2db6d
> > Author: Kenneth Graunke <kenneth@whitecape.org>
> > Date:   Wed May 11 07:54:57 2011 -0700
> >
> >     i965: Avoid register coalescing away MATH workarounds on Ivybridge.
>
> As Dave Airlie pointed out on IRC, that commit can't possibly have any
> effect
> on r300g.
>
Well the md5sums were different from the previous commit but I digress.

>
>
> > As a side note, the problem is actually worse in mesa current master,
> where it
> > does not require triggering, but instead is flickering right after
> X/compiz
> > start the first time.
>
> Sounds like a different problem. Try current Git again first, there have
> been
> some fixes for intermittent Gallium texture format related regressions.
>
Now that I know the problem occurs intermittently (depending whether the
frame fullscreen window exits on is odd) and see that disabling pageflipping
prevents the issue from happening, I do believe it's most likely the same as
the bug you mentioned. This should probably be closed as invalid.

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[Bug 37781] Major redraw/flicker issues on rv350 after exiting fullscreen app with compiz running

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=37781

Scott Moreau <oreaus@gmail.com> changed:

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

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[Bug 37781] Major redraw/flicker issues on rv350 after exiting fullscreen app with compiz running

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=37781

Scott Moreau <oreaus@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |CLOSED
         Resolution|INVALID                     |DUPLICATE

--- Comment #4 from Scott Moreau <oreaus@gmail.com> 2011-05-31 04:09:18 PDT ---


*** This bug has been marked as a duplicate of bug 35452 ***

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