Red Hat Bugzilla – Bug 495308
CPU Frequency gets stuck at maximum speed
Last modified: 2009-12-18 04:14:22 EST
Description of problem: CPU Frequency scaling gets stuck at highest speed spontaneously. After the computer is running for a while, it goes into max speed and it cannot be changed. A suspend/resume solves the problem for a few hours but the problem reoccurs. Version-Release number of selected component (if applicable): 2.6.27.21-170.2.56.fc10.i686 How reproducible: This is happening on an IBM ThinkPad T60p 2007-AD1 computer running FC10 and the lastest updates. Steps to Reproduce: 1. Normal usage, including watching videos on hulu 2. CPU frequency gets stuck on max as noticed by temperature increase of CPU 3. cpufreq-set no longer works Actual results: Output from cpufreq-info: cpufrequtils 005: cpufreq-info (C) Dominik Brodowski 2004-2006 Report errors and bugs to cpufreq@vger.kernel.org, please. analyzing CPU 0: driver: acpi-cpufreq CPUs which need to switch frequency at the same time: 0 hardware limits: 1000 MHz - 2.17 GHz available frequency steps: 2.17 GHz, 1.67 GHz, 1.33 GHz, 1000 MHz available cpufreq governors: ondemand, userspace, 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 2.17 GHz (asserted by call to hardware). analyzing CPU 1: driver: acpi-cpufreq CPUs which need to switch frequency at the same time: 1 hardware limits: 1000 MHz - 2.17 GHz available frequency steps: 2.17 GHz, 1.67 GHz, 1.33 GHz, 1000 MHz available cpufreq governors: ondemand, userspace, 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 2.17 GHz (asserted by call to hardware). Expected results: CPU frequency scaling doesn't get stuck Additional info:
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Fedora 10 changed to end-of-life (EOL) status on 2009-12-17. Fedora 10 is no longer maintained, which means that it will not receive any further security or bug fix updates. As a result we are closing this bug. If you can reproduce this bug against a currently maintained version of Fedora please feel free to reopen this bug against that version. Thank you for reporting this bug and we are sorry it could not be fixed.