Question on how Suppress NVIDIA GPUs works

[NaanProphet]

Hi there! Love your work.

I was wondering how option 5, Suppress NVIDIA GPUs is supposed to work. I saw in the source code it turns off automatic graphic switching agc=-1 and sets the NVRAM to prefer the integrated graphics card IG_POWER_PREF="%01%00%00%00".

I have option 5 enabled and curiously (to my surprise) the NVIDIA internal dGPU is still working during playback in Final Cut Pro X.

My machine specs are:

• MacBookPro9,1 (15-inch, Mid 2012)
• Mac OS X 10.14.6 Mojave (fresh re-install)
• NVIDIA GeForce GT 650M 1 GB
• Final Cut Pro X 10.4.8

Can certain applications, like Final Cut, essentially bypass the setting and access the dGPU?

[mayankk2308]

@NaanProphet this looks like a case where the mux did not switch. If the mux correctly remains fixed onto iGPU, then FCPX should be unable to use the dGPU. Retry patching.

[NaanProphet]

Retrying the patching (option 5) results in the same behavior in FCP X.

[mayankk2308]

Can you check if while using the suppress configuration, the dGPU is available as a compute GPU in benchmarks like Geekbench? If so, this is likely because I am not ‘disabling’ the NVIDIA GPU drivers (otherwise it runs hotter).