http://bugzilla.kernel.org/show_bug.cgi?id=12881
Summary: ACPI Warning (nspredef-0858): \_PR_.CPU2._PSD
Product: ACPI
Version: 2.5
KernelVersion: 2.6.28.7
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: high
Priority: P1
Component: ACPICA-Core
AssignedTo: [email protected]
ReportedBy: [email protected]
Latest working kernel version: 2.6.27.7 (the _PR_... message did not appear)
Earliest failing kernel version: not know
Distribution: Bluewhite64 Linux (x86_64)
Hardware Environment: AMD Turion(tm) 64 X2 Mobile Technology TL-50 processors
(2 cpu cores) (version 2.20.00)
Problem Description: When loading acpi-cpufreq module it return the below
message. Also, CPU scaling is not working.
ACPI Warning (nspredef-0858): \_PR_.CPU1._PSD: Return Package type mismatch at
index 3 - found [NULL Object Descriptor], expected Integer [20080926]
ACPI: Invalid _PSD data
ACPI Warning (nspredef-0858): \_PR_.CPU2._PSD: Return Package type mismatch at
index 3 - found [NULL Object Descriptor], expected Integer [20080926]
ACPI: Invalid _PSD data
Steps to reproduce: try to load acpi-cpufreq module on a 64-bit kernel before
the powernow-k8 module at boot time. If I try to load the acpi-cpufreq after
the powernow-k8 module it return: FATAL: Error inserting acpi_cpufreq
(/lib/modules/2.6.28.7/kernel/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.ko):
Device or resource busy
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