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Old 14th June 2008
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jggimi jggimi is offline
More noise than signal
 
Join Date: May 2008
Location: USA
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APM emulation under ACPI depends on the BIOS, cursedcompiler.

ACPI support, in one form or another, has been in OpenBSD since the 3.8 days. However, it wasn't until after -current was several months beyond 4.2-release that it was enabled by default. It was normally left disabled, and one would enable it for testing or problem solving.

Today, (4.3-release and -current), both APM and ACPI are enabled in the kernel. The kernel will look for APM first, and use it if found. If the BIOS has both, you will see kernel messages configuring apm0, and you will see a message that acpi exists but is not configured. If you wish to see what the acpi(4) and related drivers can do on those platforms, disable APM.
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