(In reply to Antoine Audras from comment #134)
> So what do lspci, lshw and X do that can be "reset" by launching optirun?

They wake up the card, but currently nouveau/bbswitch don’t do that
properly. I guess that loading the proprietary driver then restores a
correct card state maybe?

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https://bugs.launchpad.net/bugs/1803179

Title:
  System does not reliably come out of suspend

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