Public bug reported: I am using ubuntu 10.04 lucid, and recently noticed that cpufreq stops work on my laptop. I tried several kernel versions and found that this problem first appears in 2.6.32-25, and still exists in 2.6.32-29
With both cpufreq-selector and cpufreq-set, I can change the governor, but changing frequency is not work. cpufreq-info gives the following result ------------------------------------------------------------------------------------------------------------------- cpufrequtils 006: cpufreq-info (C) Dominik Brodowski 2004-2009 Report errors and bugs to [email protected], please. analyzing CPU 0: driver: acpi-cpufreq CPUs which run at the same hardware frequency: 0 1 CPUs which need to have their frequency coordinated by software: 0 maximum transition latency: 10.0 us. hardware limits: 1000 MHz - 2.00 GHz available frequency steps: 2.00 GHz, 1.67 GHz, 1.33 GHz, 1000 MHz available cpufreq governors: conservative, ondemand, userspace, powersave, performance current policy: frequency should be within 1000 MHz and 1000 MHz. The governor "userspace" may decide which speed to use within this range. current CPU frequency is 1000 MHz (asserted by call to hardware). cpufreq stats: 2.00 GHz:0.00%, 1.67 GHz:0.00%, 1.33 GHz:0.00%, 1000 MHz:100.00% analyzing CPU 1: driver: acpi-cpufreq CPUs which run at the same hardware frequency: 0 1 CPUs which need to have their frequency coordinated by software: 1 maximum transition latency: 10.0 us. hardware limits: 1000 MHz - 2.00 GHz available frequency steps: 2.00 GHz, 1.67 GHz, 1.33 GHz, 1000 MHz available cpufreq governors: conservative, ondemand, userspace, powersave, performance current policy: frequency should be within 1000 MHz and 1000 MHz. The governor "ondemand" may decide which speed to use within this range. current CPU frequency is 1000 MHz (asserted by call to hardware). cpufreq stats: 2.00 GHz:0.00%, 1.67 GHz:0.00%, 1.33 GHz:0.00%, 1000 MHz:100.00% ** Affects: linux (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/716220 Title: cpufreq stop work after upgrading kernel in lucid -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
