I had an iBook G3 that I used with Linux PPC. I'm not sure about your model, but I think that entire line had hardware suspension, so it had little or nothing to do with OSX.
It was one reason I got it, fast suspension was all over the place on PC laptop hardware on Linux at the time, but on Mac hardware it would Just Work, as long as your OS supported it (which I think amounted to just telling the firmware to initiate suspension).
The other reason being that battery life on PPC was far superior to x86 at the time, that was one of the things that got a bit worse with Apple's x86 transition, and better again now with their new M1 hardware.
It was one reason I got it, fast suspension was all over the place on PC laptop hardware on Linux at the time, but on Mac hardware it would Just Work, as long as your OS supported it (which I think amounted to just telling the firmware to initiate suspension).
The other reason being that battery life on PPC was far superior to x86 at the time, that was one of the things that got a bit worse with Apple's x86 transition, and better again now with their new M1 hardware.