Michael von Glasow:

1) To clarify, did this issue start to happen after an update? If so,
which specifically?

2) Does this issue happen if you don't have any external displays, and
the laptop is not docked?

3) Regarding the internal laptop display going black for a few seconds,
how often does this occur per hour, day, etc.?

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  Intermittent black screen on HP EliteBook 840 G1

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