When I switch between nGPU and iGPU, the gefore gpu and fb is disconnect with power, how did that?

[liangtb]

When I switch between nGPU and iGPU, the geforce gpu and fb is disconnect with power, how did that?
I have tested the purge-nvda
https://github.com/mayankk2308/purge-nvda
This help the nvidia-model macbook boot with iGPU and use the eGPU.
@0xbb @dwhinham @fiedl @sl33k @l1k
BUT importantly, the geforce gpu and fb is stilling consuming the power, even without geforce driver.
How do I anything to stop the geforce gpu and fb consuming the power, totally disuse the geforce card
references:
mayankk2308/purge-nvda#2

I look forward to receiving your replay!!!
Thanks!

Yours sincerely