http://bugzilla.kernel.org/show_bug.cgi?id=12183





------- Comment #23 from yakui.z...@intel.com  2008-12-16 20:03 -------
Hi, Pablo
   thanks for the test. From the test it seems that the poweroff still can't
work after the debug patch is applied.(In the debug patch the system is
switched to ACPI mode regardless of current mode).
   But from the info it seems that the system can be shutdown by writing 0x3C01
to PM1A control register after the system is booted with ACPI disabled and then
switched to ACPI mode by writing ACPI_ENABLE to SMI command port.

   It is very interesting. In fact when the system is booted with ACPI enabled,
the 0x3C01 will also be written into the PM1A control register. But
unfortunately the system can't be shutdown. 
   The difference is that no acpi driver is loaded while doing test in comment
#22.
   Thanks.



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