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. 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_g...