История изменений

Я ошибался. Primary Plane - это и есть фреймбуферная консоль:

https://en.wikipedia.org/wiki/Direct_Rendering_Manager#KMS_device_model

Planes: a plane is not a hardware block but a memory object containing a buffer from which a scanout engine (a CRTC) is fed. The plane that holds the framebuffer is called the primary plane, and each CRTC must have one associated,[43] since it's the source for the CRTC to determine the video mode —display resolution (width and height), pixel size, pixel format, refresh rate, etc.—. A CRTC might have also cursor planes associated to it if the display controller supports hardware cursor overlays, or secondary planes if it's able to scan out from additional hardware overlays and compose or blend «on the fly» the final image sent to the output device.[30]

Я ошибался. Primary Plane - это и есть фреймбуферная консоль:

https://en.wikipedia.org/wiki/Direct_Rendering_Manager#KMS_device_model

Planes: a plane is not a hardware block but a memory object containing a buffer from which a scanout engine (a CRTC) is fed. The plane that holds the framebuffer is called the primary plane, and each CRTC must have one associated,[43] since it's the source for the CRTC to determine the video mode —display resolution (width and height), pixel size, pixel format, refresh rate, etc.—. A CRTC might have also cursor planes associated to it if the display controller supports hardware cursor overlays, or secondary planes if it's able to scan out from additional hardware overlays and compose or blend «on the fly» the final image sent to the output device.[30]