In short: Fedora Core 2 and Fedora Core 2.90, Matrox Millennium G400/G450 graphics card, KDE or GNOME, Open Inventor demos flicker badly on FC2 until the window is moved to a different position, while with FC1 no such symptoms are experienced on the same machine. The problem goes away with "Option Accel off", but that slows down 2D graphics operations (like window movement) too much. Does anybody have any ideas on what could be the culprit or what I could test to find out? To describe the symptoms further, when I start /usr/lib/Inventor/gview.RUNME e.g., I see only the cleanly rotating sails of the windmill. The windmill itself flickers and is hardly visible. When I move the window a few cm, the symptoms go away, and everything looks good. Does that make sense? But when I move the window across the screen's border and back to the middle, the flickering is back. It's the same with all demos. FC2 binaries and src.rpms here (signed with key 8ff214b4): ftp://packman.iu-bremen.de/fedora/2 Fedora.us package submission ticket: https://bugzilla.fedora.us/show_bug.cgi?id=1802
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