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For my Ford, the manual was very helpful. Taking a look at the fuse box diagram, I was able to remove the fuse for the modem.
Thankfully I was able to verify that the modem power was secured because when I enter the infotainment settings to view the modem serial number, I can no longer see the modem serial number. It is just blank.
This won’t work for all vehicles because the modem may have the same fuse as critical equipment.
I think he was referring to the GPU switching software to make Optimus work on Linux.
https://wiki.archlinux.org/title/Bumblebee