the problem: i haf a mobile pentium4 2.8ghz chip in my laptop which actually is a desktop p4 chip and supports the speedstep technology (NOT enhanced ss - multilevel but the p4 ss with 2 levels - 1.6ghz and 2.8ghz). fc6 kernel is 2.6.18-1.2798 (machine - i686, hardware platform - i386) tho the speed is correctly detected at 2799mhz at startup (i can see this wid dmesg | grep MHz), after booting the proc either runs at 668mhz or 692mhz. solutions tried: edited the /etc/cpuspeed.conf, enabled the DRIVER=p4-clockmod, upgraded to latest version of cpuspeed for fc6 i386. observations: it doesn't help, if i manually "cd" into /sys/devices/......./cpufreq the speed changes to 1.6ghz for a fraction of a second and reverts back to 668mhz. in this directory i can see the available scaling freq as 668000 and 692000. fix required: i want the speedstep to correctly work at 1.5g and 2.8g on load. kubuntu used to work perfectly! any help is much appreciated! __________ edit: i tried cpudyn. the result is same (692mhz). i also tried cpufreqd. but it fails to start up as a daemon. should this be used in conjunction with something? __________ currently i've disabled all the cpu speed scaling utilities and my system runs at 2.8g wid quite a lot of heat and fans whirling all the while. i had to do this coz the system wud become too sluggish! anyone else facing this problem wid fc or any other distro? __________ i'm also not able to activate the pre-configured ondemand perf in the kernel (in cpuspeed) __________ with the cpufreq-info, i get to see that the driver used is speedstep-smi. but this driver is not present in the /lib/modules/2........../arch/cpu/..../ the only two files i can see are acpi-freq and p4-clockmod.