Description of problem: Since the cpu frequency control for Pentium-M is not enabled by default in the FC6 kernel (CONFIG_X86_SPEEDSTEP_CENTRINO). There is no frequency control and laptop always runs full speed. Version-Release number of selected component (if applicable): 2.6.18-1.2849.fc6 How reproducible: 100% Steps to Reproduce: 1. boot 2. look for cpufreq in /sys (it's missing) 3. frequency control from gnome-power-manager etc can't work It works if I build a upstream kernel and enable it. Actual results: Expected results: Additional info: Is this intentional or unintentional
Hrmm. $ grep SPEEDSTEP /boot/config-2.6.18-1.2849.fc6 CONFIG_X86_SPEEDSTEP_CENTRINO=y Oh, I bet I know what this is. I bet you've been bitten by the "installer installs a 586 kernel by default" bug. See http://fedoraproject.org/wiki/Bugs/FC6Common and see if that's the problem. If that still doesn't get you up and running, attach dmesg, and I'll poke at it some more.
*** This bug has been marked as a duplicate of 211941 ***