power saving on laptop

One of the easiest way to make sure that you can have a decent battery life is

sudo yum install tlp smartmontools
sudo systemctl enable tlp
sudo systemctl start tlp

And after this you can check the status like this:

sudo tlp stat
— TLP 0.9 ——————————————–

+++ Configured Settings: /etc/default/tlp
TLP_ENABLE=1
TLP_DEFAULT_MODE=AC
DISK_IDLE_SECS_ON_AC=0
DISK_IDLE_SECS_ON_BAT=2
MAX_LOST_WORK_SECS_ON_AC=15
MAX_LOST_WORK_SECS_ON_BAT=60
SCHED_POWERSAVE_ON_AC=0
SCHED_POWERSAVE_ON_BAT=1
NMI_WATCHDOG=0
ENERGY_PERF_POLICY_ON_AC=performance
ENERGY_PERF_POLICY_ON_BAT=powersave
DISK_DEVICES=”sda sdb”
DISK_APM_LEVEL_ON_AC=”254 254″
DISK_APM_LEVEL_ON_BAT=”128 128″
SATA_LINKPWR_ON_AC=max_performance
SATA_LINKPWR_ON_BAT=min_power
AHCI_RUNTIME_PM_TIMEOUT=15
PCIE_ASPM_ON_AC=performance
PCIE_ASPM_ON_BAT=powersave
RADEON_POWER_PROFILE_ON_AC=high
RADEON_POWER_PROFILE_ON_BAT=low
RADEON_DPM_STATE_ON_AC=performance
RADEON_DPM_STATE_ON_BAT=battery
RADEON_DPM_PERF_LEVEL_ON_AC=auto
RADEON_DPM_PERF_LEVEL_ON_BAT=auto
WIFI_PWR_ON_AC=off
WIFI_PWR_ON_BAT=on
WOL_DISABLE=Y
SOUND_POWER_SAVE_ON_AC=0
SOUND_POWER_SAVE_ON_BAT=1
SOUND_POWER_SAVE_CONTROLLER=Y
BAY_POWEROFF_ON_BAT=0
BAY_DEVICE=”sr0″
RUNTIME_PM_ON_AC=on
RUNTIME_PM_ON_BAT=auto
RUNTIME_PM_ALL=1
RUNTIME_PM_DRIVER_BLACKLIST=”radeon nouveau”
USB_AUTOSUSPEND=1
USB_BLACKLIST_WWAN=1
RESTORE_DEVICE_STATE_ON_STARTUP=0

+++ System Info
System         = LENOVO Lenovo Y50-70 20378
BIOS           = 9ECN26WW(V1.09)
Release        = “Fedora release 25 (Twenty Five)”
Kernel         = 4.8.0-0.rc5.git1.1.fc25.x86_64 #1 SMP Tue Sep 6 15:52:10 UTC 2016 x86_64
/proc/cmdline  = BOOT_IMAGE=/vmlinuz-4.8.0-0.rc5.git1.1.fc25.x86_64 root=/dev/mapper/fedora_balp–fed–amitag-root ro nomodeset rd.lvm.lv=fedora_balp-fed-amitag/root vconsole.font=latarcyrheb-sun16 rd.lvm.lv=fedora_balp-fed-amitag/swap rhgb quiet resume=/dev/dm-1 LANG=en_US.UTF-8
Init system    = systemd
Boot mode      = UEFI

+++ TLP Status
State          = enabled
Last run       = 12:16:55 PM,    556 sec(s) ago
Mode           = AC
Power source   = AC

Notice: systemd-rfkill@.service is not masked — invoke “systemctl mask systemd-rfkill@.service” to correct this!
Notice: systemd-rfkill.service is not masked — invoke “systemctl mask systemd-rfkill.service” to correct this!

+++ Processor
CPU model      = —————————————————–

/sys/devices/system/cpu/cpu0/cpufreq/scaling_driver    = intel_pstate
/sys/devices/system/cpu/cpu0/cpufreq/scaling_governor  = powersave
/sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors = performance powersave
/sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq  =   800000 [kHz]