kernelconfig_penguin
default or selected kernelversion does not have config value CONFIG_APM_REAL_MODE_POWER_OFF.
Result is shown for kernelversion 2.6.28.9

Use real mode APM BIOS call to power off

configname: CONFIG_APM_REAL_MODE_POWER_OFF

Linux Kernel Configuration for x86
└─> Power management and ACPI options
└─> APM (Advanced Power Management) BIOS support
└─> Use real mode APM BIOS call to power off

Use real mode APM BIOS calls to switch off the computer. This is
a work-around for a number of buggy BIOSes. Switch this option on if
your computer crashes instead of powering off properly.