Nouveau - Nov 2009 - [Bug 25260] New: Screen corruption in top left corner on NV50

http://bugs.freedesktop.org/show_bug.cgi?id=25260

           Summary: Screen corruption in top left corner on NV50
           Product: xorg
           Version: git
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: Driver/nouveau
        AssignedTo: nouveau at lists.freedesktop.org
        ReportedBy: tavianator at gmail.com
         QAContact: xorg-team at lists.x.org


Created an attachment (id=31446)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=31446)
Screenshot of corruption in top-left corner

I'm seeing corruption in the top left corner of the screen on my 9800M.  It
happened when I updated the xorg driver and libdrm, and I couldn't quite
bisect
it or even find which one caused it because the relevant commits involve a
libdrm API change (commit f4c50630269df4201b89a538cbf8e11646f17d82).  The age
of the DRM module doesn't seem to matter.

It's hard to get a screenshot of because it's transient and goes away
whenever
that corner gets redrawn, but I got a decent one which is attached.  It shows
basically all the symptoms: random black rectangles, random colors, and other
parts of the screen being drawn there.  For example, scrolling in firefox often
causes parts of the scrollbar to be drawn there (that's what the vertical
stripes in the screenshot are).  I've also seen an animated image that was
off
the screen in firefox show up there, fully animated and zoomed in for some
reason.


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http://bugs.freedesktop.org/show_bug.cgi?id=25260


Tavian Barnes <tavianator at gmail.com> changed:

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




--- Comment #1 from Tavian Barnes <tavianator at gmail.com>  2009-12-01
23:31:34 PST ---
Never mind, it seems this only happens when using the nouveau DRI driver, which
I installed system-wide for no good reason and then forgot about.  It seems to
work great when using the software rasterizer and XRender compositing.  I'll
reopen this if I see it again without the nouveau DRI driver in use.


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http://bugs.freedesktop.org/show_bug.cgi?id=25260


Tavian Barnes <tavianator at gmail.com> changed:

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




--- Comment #2 from Tavian Barnes <tavianator at gmail.com>  2009-12-02
05:55:32 PST ---
Sorry guys, I'm reopening this as I'm still seeing the same problem, it
seems
not as frequently now.


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Tavian Barnes <tavianator at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|REOPENED                    |RESOLVED
         Resolution|                            |FIXED




--- Comment #3 from Tavian Barnes <tavianator at gmail.com>  2009-12-19
10:58:17 PST ---
Looks like this is fixed in the latest GIT, probably by all the changes that
got merged in recently.


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