AGI requires creativity, which requires consciousness
The human-level ‘generality’ that current digital intelligence lacks requires the ability to dream up new conceptual ideas and to posit yet-undiscovered conceptual problems with existing ones. This is key to human-style creativity, and it is not a strictly material process when done by humans.
Human-style creativity is enabled by consciousness. Consciousness enables a mind to tap into the well-being gradient to be pulled (fallibly, inconsistently) towards truth in ways that cannot be explained in purely material terms.
Some problems may be feasibly solved either through human-style creativity or through purely material means (e.g. known computer algorithms), while others may be feasibly solved only through one or the other at any given time, given the amount of computation/sentience available.
Questions abound.