Description of problem: According to Intel's documentation, this cpu should support the Enhanced SpeedStep, however, the current kernel doesn't report it so. See: http://support.intel.com/support/processors/mobile/pentium4/sb/CS-007499.htm Generally, this would not be a real problem, however, the new cpuspeed's init script greps /proc/cpuinfo flags line for the 'est' flag, and if the flag is found, then loads the acpi-cpufreq kernel module. In my case, the 'est' flag is not found and cpuspeed fails to start (see cpuspeed's bug 219921). Here is the /proc/cpuinfo contents: processor : 0 vendor_id : GenuineIntel cpu family : 15 model : 2 model name : Mobile Intel(R) Pentium(R) 4 - M CPU 1.80GHz stepping : 7 cpu MHz : 1800.000 cache size : 512 KB fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 2 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe up cid bogomips : 3590.67 Version-Release number of selected component (if applicable): kernel-2.6.18-1.2869.fc6 cpuspeed-1.2.1-1.42.fc6 I'm not sure if I should rather file this bug upstream or not, any pointers would be appreciated.
Check if it's an option in your BIOS. If it isn't, there's not much we can do. We're reading this straight from the hardware and reporting it directly.