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im new in ubuntu , my laptop like many others , have 2 gpu processors , one intel and another one is nvidia , in windows intel gpu used for most of work except games , so battery usage was low

but in ubuntu it seems it use main graphic for os , my laptop temperature is Hi and also battery will work only for 1 hour

how i can change this setting in ubuntu

additional info : also i cant update my graphic driver , when i have updated it , after login only black screen is on screen

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