The warning is because of a problem with the Processor declaration in
the _PR root namespace of your ACPI DSDT:
Scope (\_PR)
{
Processor (\_PR.CPU0, 0x00, 0x0000E410, 0x05) {}
Processor (\_PR.CPU1, 0x01, 0x00000000, 0x00) {}
}
The syntax of the Processor declaration is as follows:
Processor (ProcessorName, ProcessorID, PBlockAddress, PblockLength)
Section 18.5.93 of the ACPI specification states that the PBlockLength
is the length of the processor register block, in bytes and is either 0
(for no P_BLK) or 6. In your case, the it's been set to 0x05 in the
first Processor declaration which is definetly not compliant with the
specification, hence the kernel warning message. The ACPI specification
can be downloaded from http://www.acpi.info/DOWNLOADS/ACPIspec40.pdf if
your are interested in the details.
As it is, this is not a kernel bug, but a warning from the kernel that
your BIOS is buggy and needs fixing. I suggest informing the
manufacturer so that they can fix the BIOS.
I shall therefore mark this as "Won't Fix".
** Changed in: linux (Ubuntu)
Status: Incomplete => Won't Fix
--
getting "ACPI Invalid PBLK Length 5" - message on Hardy Alpha 5
https://bugs.launchpad.net/bugs/197267
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