you might experience a slow performance in ubuntu 16.04 after resuming back from a sleep or hibernate. reason for this is it doesn't move away from powersave mode automatically. intel_pstate driver is the one making this problem, so we have to disable it and use acpi-cpufreq driver.
first lets check weather your competer is on powersave.
If your answer is powersave we have to move it to performance state.
get your cpu info by
probabaly you seeing 4 cores
lets update scaling governers
now your computer running as usual in perfonace mode.
this change will reset after a reboot. to make the change perment
finally run
first lets check weather your competer is on powersave.
cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor
If your answer is powersave we have to move it to performance state.
get your cpu info by
cat /proc/cpuinfo | grep MHz
probabaly you seeing 4 cores
lets update scaling governers
echo 'performance' > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
echo 'performance' > /sys/devices/system/cpu/cpu1/cpufreq/scaling_governor
echo 'performance' > /sys/devices/system/cpu/cpu2/cpufreq/scaling_governor
echo 'performance' > /sys/devices/system/cpu/cpu3/cpufreq/scaling_governor
now your computer running as usual in perfonace mode.
this change will reset after a reboot. to make the change perment
vi /etc/default/gruband change
GRUB_CMDLINE_LINUX_DEFAULT="ipv6.disable=1 intel_pstate=disable"
finally run
sudo update-grub
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