http://bugs.freedesktop.org/show_bug.cgi?id=16749





--- Comment #1 from Dennis Kasprzyk <[EMAIL PROTECTED]>  2008-07-17 10:44:03 
PST ---
This is seems to be a combination of two QT4 issues:

1. QT4 uses 1-Bit alpha masks that can't be accelerated with EXA and this makes
the driver to fallback to software rendering to render parts of the content of
the dashboard. You see the white window, because plasma (and the driver) hasn't
yet finished the rendering of the dashboard content. The fade in animation also
uses resources, that makes the dashboard rendering take longer.

2. The composite manager can't wait until the initial window painting has
finished, because QT4 doesn't support the _NET_WM_SYNC_REQUEST protocol.


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