Created attachment 471350 [details] dmesg output of boot with cpufreq.debug=7 in kernel command line. Description of problem: After installing cpuspeed and attempting to use ondemand frequency scaling, it seems that acpi-cpufreq does not work - falling back to p4clockmod. This CPU should be modern enough to support acpi frequency scaling. The system in question is an Acer AcerPower SK50. Version-Release number of selected component (if applicable): kernel-2.6.35.10-74.fc14.i686 kernel-2.6.37-0.rc7.git0.2.fc15.i686 How reproducible: Always. Steps to Reproduce: 1. Install Fedora 2. Install cpuspeed package 3. Observe frequency scaling support. Actual results: Scaling only happens with DRIVER=p4-clockmod & GOVERNOR=userspace and the cpuspeed daemon running. Expected results: ondemand scaling should work out of the box. Additional info: In following posts.
# for x in /sys/devices/system/cpu/cpu0/cpufreq/*;do echo $x;cat $x;done && for x in /sys/devices/system/cpu/cpu0/cpufreq/ondemand/*;do echo $x;cat $x;done /sys/devices/system/cpu/cpu0/cpufreq/affected_cpus 0 /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq 2800000 /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq 2800000 /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_min_freq 350000 /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_transition_latency 10000001 /sys/devices/system/cpu/cpu0/cpufreq/related_cpus 0 /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies 350000 700000 1050000 1400000 1750000 2100000 2450000 2800000 /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors userspace performance /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq 2800000 /sys/devices/system/cpu/cpu0/cpufreq/scaling_driver p4-clockmod /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor userspace /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq 2800000 /sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq 350000 /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed 2800000 /sys/devices/system/cpu/cpu0/cpufreq/ondemand/* cat: /sys/devices/system/cpu/cpu0/cpufreq/ondemand/*: No such file or directory
# cpufreq-info cpufrequtils 008: cpufreq-info (C) Dominik Brodowski 2004-2009 Report errors and bugs to cpufreq.org, please. analyzing CPU 0: driver: p4-clockmod CPUs which run at the same hardware frequency: 0 CPUs which need to have their frequency coordinated by software: 0 maximum transition latency: 10.00 ms. hardware limits: 350 MHz - 2.80 GHz available frequency steps: 350 MHz, 700 MHz, 1.05 GHz, 1.40 GHz, 1.75 GHz, 2.10 GHz, 2.45 GHz, 2.80 GHz available cpufreq governors: userspace, performance current policy: frequency should be within 350 MHz and 2.80 GHz. The governor "userspace" may decide which speed to use within this range. current CPU frequency is 2.80 GHz (asserted by call to hardware). analyzing CPU 1: driver: p4-clockmod CPUs which run at the same hardware frequency: 1 CPUs which need to have their frequency coordinated by software: 1 maximum transition latency: 10.00 ms. hardware limits: 350 MHz - 2.80 GHz available frequency steps: 350 MHz, 700 MHz, 1.05 GHz, 1.40 GHz, 1.75 GHz, 2.10 GHz, 2.45 GHz, 2.80 GHz available cpufreq governors: userspace, performance current policy: frequency should be within 350 MHz and 2.80 GHz. The governor "userspace" may decide which speed to use within this range. current CPU frequency is 2.80 GHz (asserted by call to hardware).
*** Duplicate of bug 505837 ***