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On the M1 the framebuffer is a separate device and can be written to directly[0]. Whether that means the GPU-proper can be powered down I don't know. [0] https
by the8472 4y ago
On the M1 the framebuffer is a separate device and can be written to directly[0]. Whether that means the GPU-proper can be powered down I don't know.
[0] https://asahilinux.org/2021/08/progress-report-august-2021/#reverse-engineering-dcp https://asahilinux.org/2021/08/progress-report-august-2021/#...
- Jweb_Guru 4y agoInteresting, didn't realize that. This explains some of the weirder present queue requirements, I guess (it doesn't really act like a regular queue). So maybe you really can power down the GPU. I still doubt it would be lower power overall, since IME my M1 GPU takes very little power when I'm not using it intensively, but it's at least possible.