powernow-k8: BIOS error - no PSB or ACPI _PSS objects

Hi,
I'm getting the following error when trying to load the powernow-k8 kernel module:
% modprobe powernow-k8 FATAL: Error inserting powernow_k8 (/lib/modules/2.6.23-grml/kernel/arch/i386/kernel/cpu/cpufreq/powernow-k8.ko): No such device
% dmesg | tail -2 powernow-k8: Found 1 AMD Athlon(tm) 64 Processor 2800+ processors (1 cpu cores) (version 2.00.00) powernow-k8: BIOS error - no PSB or ACPI _PSS objects
I think my BIOS supports the AMD PowerNow! technology, why I'm still getting the above? Is there anything on the software side that I'm missing?
My box:
% lspci -v 00:00.0 Host bridge: VIA Technologies, Inc. VT8385 [K8T800 AGP] Host Bridge (rev 01) Subsystem: ASUSTeK Computer Inc. K8V Deluxe/K8V-X motherboard Flags: bus master, 66MHz, medium devsel, latency 8 Memory at f8000000 (32-bit, prefetchable) [size=64M] Capabilities: [80] AGP version 3.5 Capabilities: [c0] HyperTransport: Slave or Primary Interface Capabilities: [68] Power Management version 2 Capabilities: [58] HyperTransport: Interrupt Discovery and Configuration
% cat /proc/acpi/processor/CPU1/info processor id: 0 acpi id: 1 bus mastering control: no power management: no throttling control: no limit interface: no
Thanks

On Tue, Apr 29, 2008 at 03:14:10AM +0000, T o n g wrote:
% dmesg | tail -2 powernow-k8: Found 1 AMD Athlon(tm) 64 Processor 2800+ processors (1 cpu cores) (version 2.00.00) powernow-k8: BIOS error - no PSB or ACPI _PSS objects
I think my BIOS supports the AMD PowerNow! technology, why I'm still getting the above? Is there anything on the software side that I'm missing?
The slower Semprons don't have Cool & Quiet. If it's not a Sempron (cat /proc/cpuinfo), then make sure you're running the latest BIOS, and make sure Cool & Quiet is enabled in the BIOS.
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Jon
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T o n g