I had this bug with actual lucid and 2.6.32-31-generic-pae on my Dell Vostro with a Intel T7500 CPU.
/sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq was only set to 800Mhz. even setting it manually to max with: "echo 2201000 | sudo tee /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq" didn't change speed to highest speed. After reading some bugs with acpi_cpufreq: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/519142 , https://bugs.launchpad.net/ubuntu/+source/linux/+bug/716220 i fiddled with the AC and after that i had either only max 2.2Ghz speed with pluged AC or 800MHz with only battery. Fix from Comment 16 worked for me: installing powernowd and everything worked as before (and should be) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/709390 Title: CPU governor changes speed to minimum only -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
