https://bugs.kde.org/show_bug.cgi?id=399499

--- Comment #27 from David Edmundson <k...@davidedmundson.co.uk> ---
I did some more graphics reset patches in Qt and I think our handling is wrong.

The reset flag is set on until you call makeCurrent a second time, then it's
cleared.

We have a tonne of places, especially screen change handling code, that calls
makeCurrent without a graphics reset check. My theory is that if we get in
here, we could have a reset that we don't handle.

I'll flood my kwin with qDebug and see if I can trigger that happening.

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