Robert Szalai wrote:
Hello everybody, I have a Shuttle K48 Barebone PC (Intel 945GC + ICH7 chipset) and a Core 2 Duo E7300 CPU. I'm using Ubuntu 8.04 with 2.6.24-23-generic kernel on my box. Everything works fine except Speedstep. When I try to load acpi_cpufreq module, I get the following error: $ sudo modprobe acpi_cpufreq FATAL: Error inserting acpi_cpufreq (/lib/modules/2.6.24-23-generic/kernel/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.ko): No such device I've tried everything (other kernel versions, various patches) but the result is the same. I don't know if it is related to EIST or not but I've found these two Exceptions in my dmesg: [ 20.675593] ACPI Exception (processor_core-0822): AE_NOT_FOUND, Processor Device is not present [20070126] [ 20.675599] ACPI Exception (processor_core-0822): AE_NOT_FOUND, Processor Device is not present [20070126] After some research I've found that maybe a broken DSDT table is the couse of my problem. I'm not an ACPI expert and I dont't know how to locate and fix the problem in my DSDT. I've uploaded my dsdt.dsl to http://www.easy-share.com/1903982677/dsdt.dsl Any suggestions? I'd really like to use Speedstep on my Box. You are my last hope Guys.
Your system doesn't seem to have anything interesting regarding CPU frequency scaling in the DSDT, but it's often in the FADT instead. Posting a full acpidump might be more useful..
Also make sure that any BIOS settings to allow CPU frequency scaling are enabled.
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