pmud binary package in Ubuntu Xenial powerpc

 pmud is a daemon which periodically polls the PMU
 (power manager) and performs functions such as enabling
 or disabling devices appropriately when the power source
 changes, or putting the computer into sleep mode when the
 remaining battery power drops below a critical threshold.
 Additional tools include a sleep command and a tool for
 waking up media bay devices to work around a CD-ROM wakeup
 bug in old kernels.

Source package