[Bilbo1967]

Originally Posted by Mark Nord

Glad your reader is back.

For what it is worth:
Probably there is a problem with the power-slider.
Just ignoring your first wake-attempt.

So the reader was still in hybernation when you pressed the reset-button and cut it short. Erasing current history and all.
As with all e-ink devices the screen would not change on reset - but stay infinit.

Then the next push of the power-slider was recognised, restarting the reader.

Thanks Mark, that certainly seems to make sense. I'll keep an eye on it.