On Mon, 3 Sep 2007, Jared D. McNeill wrote:
Log Message: Add support for spinning up APs in cpu_power power handler. ACPI suspend to RAM (S3) now works on MULTIPROCESSOR kernels via sysctl machdep.sleep_state=3 -- still need to investigate why 'apm -d -z' fails.
Sorry, I should have said "now works in single-user mode".