all modules are loaded except speedstep_centrino # cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_driver acpi-cpufreq
so, it's not speedstep_centrino dmesg output : # dmesg | grep -i cpu [ 8.722994] Initializing CPU#0 [ 8.931422] CPU: After generic identify, caps: afe9f9bf 00000000 00000000 00000000 00000180 00000000 00000000 [ 8.931452] CPU: L1 I cache: 32K, L1 D cache: 32K [ 8.931455] CPU: L2 cache: 2048K [ 8.931457] CPU: After all inits, caps: afe9f9bf 00000000 00000000 00002040 00000180 00000000 00000000 [ 8.931519] CPU: Intel(R) Pentium(R) M processor 1.60GHz stepping 06 [ 13.757035] ACPI: CPU0 (power states: C1[C1] C2[C2] C3[C3]) -- CPU monitor reports unrealistic frequencies https://launchpad.net/bugs/94042 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs