The use of ACPI causes instabilities on some machines and it may be necessary to disable the ACPI driver, which is normally loaded via a kernel module. The acpi 4 manual page has more information on how to do this via loader tunables. High-resolution mode is not supported. SMP is supported on all systems with more than 1 processor. If you have a system that is not listed here, it may not have been tested with FreeBSD The following systems[…]