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]

 

tlp – optimize and maximize your battery power.

So, you are having issues with battery life on linux. Then head over to tlp project.

TLP brings you the benefits of advanced power management for Linux
without the need to understand every technical detail. TLP comes
with a default configuration already optimized for battery life.
Also an optional install of the smartmontools package enables hard
disk SMART data in tlp-stat (smartctl).

Install with following command

 

dnf install tlp
#or
yum install tlp

tlp – optimize and maximize your battery power.

If you are concerned about the battery life on your Linux laptop, then you should consider using tlp. tlp customizes your Linux distribution for maximum battery life and thus helps improving battery longevity when on Linux.

 

TLP brings you the benefits of advanced power management for Linux
without the need to understand every technical detail. TLP comes
with a default configuration already optimized for battery life.
Also an optional install of the smartmontools package enables hard
disk SMART data in tlp-stat (smartctl).

Installation on Fedora:

sudo yum install tlp

Once done, you should start it with

sudo tlp start
#Enable on reboot:
sudo systemctl enable tlp.service

and you are done.

 

If you want to see the current setting you can try ( note: it does show a lot of information, if you are interested)

sudo tlp stat