https://bugs.kde.org/show_bug.cgi?id=476340

--- Comment #3 from Harald Sitter <sit...@kde.org> ---
I was wrong when I said it doesn't get enabled. It's much more complicate.d
It apparently gets enabled but it doesn't get applied correctly. That said I
think this bug and bug #476342 are actually the same defect. When I VT switch I
can force a repaint to get the laptop screen activated; input processing is
entirely not working though and only happens when VT switching.

Specifically I see
https://invent.kde.org/plasma/kwin/-/blob/e3186ae8e66c21be61dc4100c0d0e4fa4dffd201/src/scene/workspacescene.cpp#L230
triggering during the DrmOutput changes which I guess means the time management
is broken somehow?  After the VT switching I then see
KWin::RenderLoop::scheduleRepaint calls as I try to interact with widgets but
they appear to never result in DrmOutput::present calls which explains why
nothing is happening on screen I guess.

I would conclude that the RenderLoop(?) is having trouble. I am as yet unsure
why.

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