http://bugzilla.kernel.org/show_bug.cgi?id=11631
------- Comment #13 from [EMAIL PROTECTED] 2008-09-23 19:50 -------
HI, Joshua
What Shaohua said in comment #4 is right.
The BCMD is defined under the scope of _SB. Its full name should be
"_SB.BCMD". And there is no object of "\_SB.PCI0.LPC0.BCMD".
When the ACPI processor driver is loaded, the _PDC object of CPU0 will be
evaluated, in which the _OSC object will be called. And "\_SB.PCI0.LPC0.BCMD"
object will be accessed. But unfortunately it doesn't exist, which causes that
_OSC object will return failure. In such case the CPU0CST SSDT table can't be
loaded.
So the following warning message will be printed:
> ACPI Error (psargs-0355): [\_SB_.PCI0.LPC0.BCMD] Namespace lookup
failure, AE_NOT_FOUND
> ACPI Error (psparse-0537): Method parse/execution failed
[\_PR_.CPU0._OSC] (Node ffff81042f442060), AE_NOT_FOUND
> ACPI Error (psparse-0537): Method parse/execution failed
[\_PR_.CPU0._PDC] (Node ffff81042f442040), AE_NOT_FOUND
At the same time the ACPI object defined in CPU0CST SSDT table will be
referred by other CPUs. As the CPU0CST table is not loaded, the following
warning message will be printed for other CPUs.
> ACPI Error (psargs-0355): [\_PR_.CPU0._CST] Namespace lookup failure,
AE_NOT_FOUND
> ACPI Error (psparse-0537): Method parse/execution failed
[\_PR_.CPU4._CST] (Node ffff81042f4fb300), AE_NOT_FOUND
IMO this is a very obvious BIOS bug. It had better be fixed by upgrading
BIOS.
Thanks.
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