Digging through the data sheets, your processor should support 2 P-states: 2700 MHz and 1350 MHz. I don't know of any reason why the 2.6.26 kernel wouldn't support this processor. Could you send me the results of `dmesg | grep Power` done immediately after bootup? Also, you may want to make sure that the powernow_k8 module is loaded on your system. -Mark Langsdorf Operating System Research Center AMD > -----Original Message----- > From: cpufreq-owner@xxxxxxxxxxxxxxx > [mailto:cpufreq-owner@xxxxxxxxxxxxxxx] On Behalf Of Leszek Koltunski > Sent: Thursday, February 12, 2009 1:39 AM > To: cpufreq@xxxxxxxxxxxxxxx > Subject: AMD 7750 / Asus M3N-HD/HDMI: cpufreq doesn't work > > > > Hello everybody, > > My problem: cpufreq doesn't work at all: > utumno:/home/leszek# cpufreq-info > cpufrequtils 004: cpufreq-info (C) Dominik Brodowski 2004-2006 > Report errors and bugs to cpufreq@xxxxxxxxxxxxxxxxxx, please. > analyzing CPU 0: > no or unknown cpufreq driver is active on this CPU > analyzing CPU 1: > no or unknown cpufreq driver is active on this CPU > > ( BTW: cpufreq@xxxxxxxxxxxxxxxxxx bounces! ) > > > Here's a snipplet from dmesg, looks like ACPI doesn't even > see that the > processor supports any C-states or any throttling: > [ 1.107335] ACPI: PNP0C0B:00 is registered as cooling_device0 > [ 1.107335] ACPI: Fan [FAN] (on) > [ 1.111327] ACPI: ACPI0007:00 is registered as cooling_device1 > [ 1.111327] ACPI: ACPI0007:01 is registered as cooling_device2 > [ 1.111327] ACPI: Expecting a [Reference] package element, > found type 0 > [ 1.111327] ACPI: LNXTHERM:01 is registered as thermal_zone0 > [ 1.111327] ACPI: Thermal Zone [THRM] (40 C) > > ( in my laptop, where cpufreq works, precisely at this point > ACPI reports about > the C states my laptop processor supports ) > > I would be very thankful for tips how to debug this case. For > starters, I would > like to be able to point my finger at the guilty party: is it > the processor, > the mobo, the kernel or my misconfiguration? > > ************************************************************** > ************** > > > My kernel: > 2.6.26-1-amd64 ( current Debian Lenny kernel with no > modifications on my part) > > My BIOS: (info taken from dmidecode) > BIOS Information > Vendor: Phoenix Technologies, LTD > Version: ASUS M3N-HD/HDMI ACPI BIOS Revision 0901 > Release Date: 04/26/2008 > > My mobo: (info taken from dmidecode) > Base Board Information > Manufacturer: ASUSTeK Computer INC. > Product Name: M3N-HD/HDMI > Version: 1.XX > Serial Number: MS1C84B08001028 > > My processor: (info taken from dmidecode ) > Processor Information > Socket Designation: Socket AM2 > Type: Central Processor > Family: Sempron > Manufacturer: AMD > ID: 23 0F 10 00 FF FB 8B 17 > Signature: Family 16, Model 2, Stepping 3 > Flags: > FPU (Floating-point unit on-chip) > VME (Virtual mode extension) > DE (Debugging extension) > PSE (Page size extension) > TSC (Time stamp counter) > MSR (Model specific registers) > PAE (Physical address extension) > MCE (Machine check exception) > CX8 (CMPXCHG8 instruction supported) > APIC (On-chip APIC hardware supported) > SEP (Fast system call) > MTRR (Memory type range registers) > PGE (Page global enable) > MCA (Machine check architecture) > CMOV (Conditional move instruction supported) > PAT (Page attribute table) > PSE-36 (36-bit page size extension) > CLFSH (CLFLUSH instruction supported) > MMX (MMX technology supported) > FXSR (Fast floating-point save and restore) > SSE (Streaming SIMD extensions) > SSE2 (Streaming SIMD extensions 2) > HTT (Hyper-threading technology) > Version: AMD Athlon(tm) 7750 Dual-Core Processor > Voltage: 1.5 V > External Clock: 200 MHz > Max Speed: 3700 MHz > Current Speed: 2700 MHz > Status: Populated, Enabled > Upgrade: Socket 940 > L1 Cache Handle: 0x0005 > L2 Cache Handle: 0x0006 > L3 Cache Handle: Not Provided > Serial Number: > Asset Tag: > Part Number: > Core Count: 2 > Core Enabled: 2 > Thread Count: 2 > Characteristics: > 64-bit capable > > -- > To unsubscribe from this list: send the line "unsubscribe cpufreq" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > > -- To unsubscribe from this list: send the line "unsubscribe cpufreq" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
