How does the CPU communicate with the GPU before drivers are loaded?

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Music by Eric Matyas
https://www.soundimage.org
Track title: Hypnotic Puzzle3

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Chapters
00:00 Question
00:39 Accepted answer (Score 35)
02:28 Answer 2 (Score 18)
07:35 Thank you

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Full question
https://superuser.com/questions/1395914/...

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Tags
#drivers #graphicscard #gpu

#avk47