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Is there a way to stop gnome from using dGPU?
(sh.itjust.works)
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You can disable the dGPU in the BIOS if I am not wrong. You can also check powertop optimisations to try to extend the battery life of your laptop and change the charging curve of your battery to extend its lifespan.
That’s sort of nuclear. OP wants it to behave like KDE, where the DE prefers the integrated GPU and just select applications wake the discrete one.