My Ubuntu affected with this issue too: 10.04 Lucid, kernel 2.6.32-30, Intel E6600 overclocked from 2.4GHz to 3.4GHz. I have windows XP installed on the same PC, and frequency scaling/reporting works fine (for example tools like cpuZ, OCCT, speedFan show correct frequency values).
Looks like wrong implementation of Intel SpeedStep in recent linux kernel (?).
My Ubuntu affected with this issue too: 10.04 Lucid, kernel 2.6.32-30, Intel E6600 overclocked from 2.4GHz to 3.4GHz. I have windows XP installed on the same PC, and frequency scaling/reporting works fine (for example tools like cpuZ, OCCT, speedFan show correct frequency values).
Looks like wrong implementation of Intel SpeedStep in recent linux kernel (?).