Hi, i have spent some time and did some google and got the answer. Its seems there is some bug in Powertop. One could refer http://osdir.com/ml/ubuntu-bugs/2011-08/msg41660.html. Now its working with previous version.. Thanks, ~Pankaj Singh On Mon, Oct 17, 2011 at 1:48 PM, pankaj singh <psingh.ait@gmail.com> wrote:
Hi, I am trying to do power profiling of my laptop (DELL LATITUDE) where i am using ubuntu 11.10. For this i m using powertop and acpitool but unfortunately i am not able to get C and P states.
when i run `acpitool -c` it says
Function Show_CPU_Info : could not read directory /proc/acpi/processor/ Make sure your kernel has ACPI processor support enabled.
I have already check the config file ACPI_PROCESSOR is enable(in kernel). So do i require to install any specific driver to get C and P states.
For information i m using kernel version 3.0.0-12-generic.
-- Pankaj SIngh Phone No: 9921865080
-- Pankaj SIngh Phone No: 9921865080