Comment 6 for bug 64070

Here is a solution that worked for me.

Create the following script. in /etc/acpi/resume.d/75-dual-core-cpu-freq.sh

#!/bin/sh

SYS_DIR=/sys/devices/system/cpu
#POLICY=performance
###
# POLICY can be any of:
# userspace powersave ondemand conservative performance
#
POLICY=ondemand

for CPU in `ls $SYS_DIR`
do
  echo -n $POLICY > $SYS_DIR/$CPU/cpufreq/scaling_governor
done
#==========

Now the policy will be set correctly after a resume from hibernate or suspend state.