Nouveau - Sep 2008 - [Bug 17601] New: flicker on new window opening

http://bugs.freedesktop.org/show_bug.cgi?id=17601

           Summary: flicker on new window opening
           Product: xorg
           Version: git
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
        AssignedTo: nouveau at lists.freedesktop.org
        ReportedBy: panov at canopus.iacp.dvo.ru
         QAContact: xorg-team at lists.x.org


Created an attachment (id=18907)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=18907)
Xorg log

Start of new application window (especially based on gtk-2.14) under KDE 3.5
causes a short flicker stripes on CRT screen.


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--- Comment #1 from Andrey V. Panov <panov at canopus.iacp.dvo.ru> 
2008-09-15 21:49:05 PST ---
Created an attachment (id=18908)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=18908)
xorg.conf


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--- Comment #2 from Maarten Maathuis <madman2003 at gmail.com>  2008-09-16
01:44:48 PST ---
This is caused by gtk calling XRRGetScreenResources() on application start,
which probes all outputs. The effect you see is caused by load detect. While it
may be possible to avoid load detect, it is not by definition our bug. I'm
leaving this to Stuart Bennett, who knows more about the code.


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--- Comment #3 from Stuart Bennett <sb476 at cam.ac.uk>  2008-10-10
14:07:54 PST ---
I've just pushed a commit that should reduce the load detect side effects
"randr12: don't use in use (by another vga output) crtc for load detect
(avoids
flicker)". Obviously this still leaves the rather stupid behaviour of gtk,
but
you'll have to get someone else to fix that. So, please try using a updated
git
checkout and close the bug if the flicker is gone.


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Stuart Bennett <sb476 at cam.ac.uk> changed:

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




--- Comment #4 from Stuart Bennett <sb476 at cam.ac.uk>  2009-01-13
15:44:04 PST ---
As noted in comment 2, this is due to a combination of xserver/gtk stupidity
that really isn't the driver's fault.


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