https://bugs.kde.org/show_bug.cgi?id=316734

--- Comment #6 from Martin Gräßlin <mgraess...@kde.org> ---
(In reply to Josef Kufner from comment #5)
> The buffer must be cleared before suspend. Accordin to what I met in systemd
> configuration, It should be possible to "inhibit" suspend proces until the
> buffer is cleared.

well that's what we do from kscreenlocker. We adjusted the code to keep the
inhibition around till the first frame is definitely rendered. Nevertheless we
get an old buffer shown on resume. It works fine on my IvyBridge based system,
it doesn't on my SandyBridge based system.

Sorry, but as far as I investigated on my system our code does the right thing.

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