In the bios of this asus p7f55d-v-evo mobo with corei5-661, cpuspeed options are enabled, but cpufreq doesn't register. the i7z do show frequent mhz changes when load is applied, but i suppose it's motherboard controlled, and not cpufreq. when booting the kernel with cpufreq.debug=7, dmesg shows: ~]$ dmesg | grep freq Command line: ro root=LABEL=rootssd log_buf_len=16M init=/sbin/bootchartd SYSFONT=latarcyrheb-sun16 LANG=en_US KEYTABLE=be-latin1 nomodeset time=1 log_buf_len=16M loglevel=8 i915.modeset=1 cpufreq.debug=7 Kernel command line: ro root=LABEL=rootssd log_buf_len=16M init=/sbin/bootchartd SYSFONT=latarcyrheb-sun16 LANG=en_US KEYTABLE=be-latin1 nomodeset time=1 log_buf_len=16M loglevel=8 i915.modeset=1 cpufreq.debug=7 Calibrating delay loop (skipped), value calculated using timer frequency.. 6687.63 BogoMIPS (lpj=3343819) acpi-cpufreq: acpi_cpufreq_init acpi-cpufreq: acpi_cpufreq_early_init cpufreq-core: trying to register driver acpi-cpufreq cpufreq-core: adding CPU 0 acpi-cpufreq: acpi_cpufreq_cpu_init cpufreq-core: initialization failed cpufreq-core: adding CPU 1 acpi-cpufreq: acpi_cpufreq_cpu_init cpufreq-core: initialization failed cpufreq-core: adding CPU 2 acpi-cpufreq: acpi_cpufreq_cpu_init cpufreq-core: initialization failed cpufreq-core: adding CPU 3 acpi-cpufreq: acpi_cpufreq_cpu_init cpufreq-core: initialization failed cpufreq-core: no CPU initialized for driver acpi-cpufreq cpufreq-core: unregistering CPU 0 cpufreq-core: unregistering CPU 1 cpufreq-core: unregistering CPU 2 cpufreq-core: unregistering CPU 3 cpufreq-core: trying to register driver p4-clockmod cpufreq-core: adding CPU 0 p4-clockmod: Warning: EST-capable CPU detected. The acpi-cpufreq module offers voltage scaling in addition of frequency scaling. You should use that instead of p4-clockmod, if possible. cpufreq-core: initialization failed cpufreq-core: adding CPU 1 p4-clockmod: Warning: EST-capable CPU detected. The acpi-cpufreq module offers voltage scaling in addition of frequency scaling. You should use that instead of p4-clockmod, if possible. cpufreq-core: initialization failed cpufreq-core: adding CPU 2 p4-clockmod: Warning: EST-capable CPU detected. The acpi-cpufreq module offers voltage scaling in addition of frequency scaling. You should use that instead of p4-clockmod, if possible. cpufreq-core: initialization failed cpufreq-core: adding CPU 3 p4-clockmod: Warning: EST-capable CPU detected. The acpi-cpufreq module offers voltage scaling in addition of frequency scaling. You should use that instead of p4-clockmod, if possible. cpufreq-core: initialization failed cpufreq-core: no CPU initialized for driver p4-clockmod cpufreq-core: unregistering CPU 0 cpufreq-core: unregistering CPU 1 cpufreq-core: unregistering CPU 2 cpufreq-core: unregistering CPU 3 acpidump text file attached
Created attachment 25630 [details] acpidump > txt on this mobo+cpu
this bugrequest can be closed, in the asus bios, AITweak section, the option "ASUS/3rdParty UI Priority" has to be set to 3rdParty, then acpi-cpufreq will load fine & cpuspeed governors will work