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+[#]: collector: (lujun9972)
+[#]: translator: ( )
+[#]: reviewer: ( )
+[#]: publisher: ( )
+[#]: url: ( )
+[#]: subject: (TLP – An Advanced Power Management Tool That Improve Battery Life On Linux Laptop)
+[#]: via: (https://www.2daygeek.com/tlp-increase-optimize-linux-laptop-battery-life/)
+[#]: author: (Magesh Maruthamuthu https://www.2daygeek.com/author/magesh/)
+
+TLP – An Advanced Power Management Tool That Improve Battery Life On Linux Laptop
+======
+
+Laptop battery is highly optimized for Windows OS, that i had realized when i was using Windows OS in my laptop but it’s not same for Linux.
+
+Over the years Linux has improved a lot for battery optimization but still we need make some necessary things to improve laptop battery life in Linux.
+
+When i think about battery life, i got few options for that but i felt TLP is a better solutions for me so, i’m going with it.
+
+In this tutorial we are going to discuss about TLP in details to improve battery life.
+
+We had written three articles previously in our site about **[laptop battery saving utilities][1]** for Linux **[PowerTOP][2]** and **[Battery Charging State][3]**.
+
+### What is TLP?
+
+[TLP][4] is a free opensource advanced power management tool that improve your battery life without making any configuration change.
+
+Since it comes with a default configuration already optimized for battery life, so you may just install and forget it.
+
+Also, it is highly customizable to fulfill your specific requirements. TLP is a pure command line tool with automated background tasks. It does not contain a GUI.
+
+TLP runs on every laptop brand. Setting the battery charge thresholds is available for IBM/Lenovo ThinkPads only.
+
+All TLP settings are stored in `/etc/default/tlp`. The default configuration provides optimized power saving out of the box.
+
+The following TLP settings is available for customization and you need to make the necessary changes accordingly if you want it.
+
+### TLP Features
+
+  * Kernel laptop mode and dirty buffer timeouts
+  * Processor frequency scaling including “turbo boost” / “turbo core”
+  * Limit max/min P-state to control power dissipation of the CPU
+  * HWP energy performance hints
+  * Power aware process scheduler for multi-core/hyper-threading
+  * Processor performance versus energy savings policy (x86_energy_perf_policy)
+  * Hard disk advanced power magement level (APM) and spin down timeout (per disk)
+  * AHCI link power management (ALPM) with device blacklist
+  * PCIe active state power management (PCIe ASPM)
+  * Runtime power management for PCI(e) bus devices
+  * Radeon graphics power management (KMS and DPM)
+  * Wifi power saving mode
+  * Power off optical drive in drive bay
+  * Audio power saving mode
+  * I/O scheduler (per disk)
+  * USB autosuspend with device blacklist/whitelist (input devices excluded automatically)
+  * Enable or disable integrated wifi, bluetooth or wwan devices upon system startup and shutdown
+  * Restore radio device state on system startup (from previous shutdown).
+  * Radio device wizard: switch radios upon network connect/disconnect and dock/undock
+  * Disable Wake On LAN
+  * Integrated WWAN and bluetooth state is restored after suspend/hibernate
+  * Untervolting of Intel processors – requires kernel with PHC-Patch
+  * Battery charge thresholds – ThinkPads only
+  * Recalibrate battery – ThinkPads only
+
+
+
+### How to Install TLP in Linux
+
+TLP package is available in most of the distributions official repository so, use the distributions **[Package Manager][5]** to install it.
+
+For **`Fedora`** system, use **[DNF Command][6]** to install TLP.
+
+```
+$ sudo dnf install tlp tlp-rdw
+```
+
+ThinkPads require an additional packages.
+
+```
+$ sudo dnf install https://download1.rpmfusion.org/free/fedora/rpmfusion-free-release-$(rpm -E %fedora).noarch.rpm
+$ sudo dnf install http://repo.linrunner.de/fedora/tlp/repos/releases/tlp-release.fc$(rpm -E %fedora).noarch.rpm
+$ sudo dnf install akmod-tp_smapi akmod-acpi_call kernel-devel
+```
+
+Install smartmontool to display S.M.A.R.T. data in tlp-stat.
+
+```
+$ sudo dnf install smartmontools
+```
+
+For **`Debian/Ubuntu`** systems, use **[APT-GET Command][7]** or **[APT Command][8]** to install TLP.
+
+```
+$ sudo apt install tlp tlp-rdw
+```
+
+ThinkPads require an additional packages.
+
+```
+$ sudo apt-get install tp-smapi-dkms acpi-call-dkms
+```
+
+Install smartmontool to display S.M.A.R.T. data in tlp-stat.
+
+```
+$ sudo apt-get install smartmontools
+```
+
+When the official package becomes outdated for Ubuntu based systems then use the following PPA repository which provides an up-to-date version. Run the following commands to install TLP using the PPA.
+
+```
+$ sudo apt-get install tlp tlp-rdw
+```
+
+For **`Arch Linux`** based systems, use **[Pacman Command][9]** to install TLP.
+
+```
+$ sudo pacman -S tlp tlp-rdw
+```
+
+ThinkPads require an additional packages.
+
+```
+$ pacman -S tp_smapi acpi_call
+```
+
+Install smartmontool to display S.M.A.R.T. data in tlp-stat.
+
+```
+$ sudo pacman -S smartmontools
+```
+
+Enable TLP & TLP-Sleep service on boot for Arch Linux based systems.
+
+```
+$ sudo systemctl enable tlp.service
+$ sudo systemctl enable tlp-sleep.service
+```
+
+You should also mask the following services to avoid conflicts and assure proper operation of TLP’s radio device switching options for Arch Linux based systems.
+
+```
+$ sudo systemctl mask systemd-rfkill.service
+$ sudo systemctl mask systemd-rfkill.socket
+```
+
+For **`RHEL/CentOS`** systems, use **[YUM Command][10]** to install TLP.
+
+```
+$ sudo yum install tlp tlp-rdw
+```
+
+Install smartmontool to display S.M.A.R.T. data in tlp-stat.
+
+```
+$ sudo yum install smartmontools
+```
+
+For **`openSUSE Leap`** system, use **[Zypper Command][11]** to install TLP.
+
+```
+$ sudo zypper install TLP
+```
+
+Install smartmontool to display S.M.A.R.T. data in tlp-stat.
+
+```
+$ sudo zypper install smartmontools
+```
+
+After successfully TLP installed, use the following command to start the service.
+
+```
+$ systemctl start tlp.service
+```
+
+To show battery information.
+
+```
+$ sudo tlp-stat -b
+or
+$ sudo tlp-stat --battery
+
+--- TLP 1.1 --------------------------------------------
+
++++ Battery Status
+/sys/class/power_supply/BAT0/manufacturer = SMP
+/sys/class/power_supply/BAT0/model_name = L14M4P23
+/sys/class/power_supply/BAT0/cycle_count = (not supported)
+/sys/class/power_supply/BAT0/energy_full_design = 60000 [mWh]
+/sys/class/power_supply/BAT0/energy_full = 48850 [mWh]
+/sys/class/power_supply/BAT0/energy_now = 48850 [mWh]
+/sys/class/power_supply/BAT0/power_now = 0 [mW]
+/sys/class/power_supply/BAT0/status = Full
+
+Charge = 100.0 [%]
+Capacity = 81.4 [%]
+```
+
+To show disk information.
+
+```
+$ sudo tlp-stat -d
+or
+$ sudo tlp-stat --disk
+
+--- TLP 1.1 --------------------------------------------
+
++++ Storage Devices
+/dev/sda:
+ Model = WDC WD10SPCX-24HWST1
+ Firmware = 02.01A02
+ APM Level = 128
+ Status = active/idle
+ Scheduler = mq-deadline
+
+ Runtime PM: control = on, autosuspend_delay = (not available)
+
+ SMART info:
+ 4 Start_Stop_Count = 18787
+ 5 Reallocated_Sector_Ct = 0
+ 9 Power_On_Hours = 606 [h]
+ 12 Power_Cycle_Count = 1792
+ 193 Load_Cycle_Count = 25775
+ 194 Temperature_Celsius = 31 [°C]
+
+
++++ AHCI Link Power Management (ALPM)
+/sys/class/scsi_host/host0/link_power_management_policy = med_power_with_dipm
+/sys/class/scsi_host/host1/link_power_management_policy = med_power_with_dipm
+/sys/class/scsi_host/host2/link_power_management_policy = med_power_with_dipm
+/sys/class/scsi_host/host3/link_power_management_policy = med_power_with_dipm
+
++++ AHCI Host Controller Runtime Power Management
+/sys/bus/pci/devices/0000:00:17.0/ata1/power/control = on
+/sys/bus/pci/devices/0000:00:17.0/ata2/power/control = on
+/sys/bus/pci/devices/0000:00:17.0/ata3/power/control = on
+/sys/bus/pci/devices/0000:00:17.0/ata4/power/control = on
+```
+
+To show PCI device information.
+
+```
+$ sudo tlp-stat -e
+or
+$ sudo tlp-stat --pcie
+
+--- TLP 1.1 --------------------------------------------
+
++++ Runtime Power Management
+Device blacklist = (not configured)
+Driver blacklist = amdgpu nouveau nvidia radeon pcieport
+
+/sys/bus/pci/devices/0000:00:00.0/power/control = auto (0x060000, Host bridge, skl_uncore)
+/sys/bus/pci/devices/0000:00:01.0/power/control = auto (0x060400, PCI bridge, pcieport)
+/sys/bus/pci/devices/0000:00:02.0/power/control = auto (0x030000, VGA compatible controller, i915)
+/sys/bus/pci/devices/0000:00:14.0/power/control = auto (0x0c0330, USB controller, xhci_hcd)
+/sys/bus/pci/devices/0000:00:16.0/power/control = auto (0x078000, Communication controller, mei_me)
+/sys/bus/pci/devices/0000:00:17.0/power/control = auto (0x010601, SATA controller, ahci)
+/sys/bus/pci/devices/0000:00:1c.0/power/control = auto (0x060400, PCI bridge, pcieport)
+/sys/bus/pci/devices/0000:00:1c.2/power/control = auto (0x060400, PCI bridge, pcieport)
+/sys/bus/pci/devices/0000:00:1c.3/power/control = auto (0x060400, PCI bridge, pcieport)
+/sys/bus/pci/devices/0000:00:1d.0/power/control = auto (0x060400, PCI bridge, pcieport)
+/sys/bus/pci/devices/0000:00:1f.0/power/control = auto (0x060100, ISA bridge, no driver)
+/sys/bus/pci/devices/0000:00:1f.2/power/control = auto (0x058000, Memory controller, no driver)
+/sys/bus/pci/devices/0000:00:1f.3/power/control = auto (0x040300, Audio device, snd_hda_intel)
+/sys/bus/pci/devices/0000:00:1f.4/power/control = auto (0x0c0500, SMBus, i801_smbus)
+/sys/bus/pci/devices/0000:01:00.0/power/control = auto (0x030200, 3D controller, nouveau)
+/sys/bus/pci/devices/0000:07:00.0/power/control = auto (0x080501, SD Host controller, sdhci-pci)
+/sys/bus/pci/devices/0000:08:00.0/power/control = auto (0x028000, Network controller, iwlwifi)
+/sys/bus/pci/devices/0000:09:00.0/power/control = auto (0x020000, Ethernet controller, r8168)
+/sys/bus/pci/devices/0000:0a:00.0/power/control = auto (0x010802, Non-Volatile memory controller, nvme)
+```
+
+To show graphics card information.
+
+```
+$ sudo tlp-stat -g
+or
+$ sudo tlp-stat --graphics
+
+--- TLP 1.1 --------------------------------------------
+
++++ Intel Graphics
+/sys/module/i915/parameters/enable_dc = -1 (use per-chip default)
+/sys/module/i915/parameters/enable_fbc = 1 (enabled)
+/sys/module/i915/parameters/enable_psr = 0 (disabled)
+/sys/module/i915/parameters/modeset = -1 (use per-chip default)
+```
+
+To show Processor information.
+
+```
+$ sudo tlp-stat -p
+or
+$ sudo tlp-stat --processor
+
+--- TLP 1.1 --------------------------------------------
+
++++ Processor
+CPU model = Intel(R) Core(TM) i7-6700HQ CPU @ 2.60GHz
+
+/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]
+/sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq = 3500000 [kHz]
+/sys/devices/system/cpu/cpu0/cpufreq/energy_performance_preference = balance_power
+/sys/devices/system/cpu/cpu0/cpufreq/energy_performance_available_preferences = default performance balance_performance balance_power power
+
+/sys/devices/system/cpu/cpu1/cpufreq/scaling_driver = intel_pstate
+/sys/devices/system/cpu/cpu1/cpufreq/scaling_governor = powersave
+/sys/devices/system/cpu/cpu1/cpufreq/scaling_available_governors = performance powersave
+/sys/devices/system/cpu/cpu1/cpufreq/scaling_min_freq = 800000 [kHz]
+/sys/devices/system/cpu/cpu1/cpufreq/scaling_max_freq = 3500000 [kHz]
+/sys/devices/system/cpu/cpu1/cpufreq/energy_performance_preference = balance_power
+/sys/devices/system/cpu/cpu1/cpufreq/energy_performance_available_preferences = default performance balance_performance balance_power power
+
+/sys/devices/system/cpu/cpu2/cpufreq/scaling_driver = intel_pstate
+/sys/devices/system/cpu/cpu2/cpufreq/scaling_governor = powersave
+/sys/devices/system/cpu/cpu2/cpufreq/scaling_available_governors = performance powersave
+/sys/devices/system/cpu/cpu2/cpufreq/scaling_min_freq = 800000 [kHz]
+/sys/devices/system/cpu/cpu2/cpufreq/scaling_max_freq = 3500000 [kHz]
+/sys/devices/system/cpu/cpu2/cpufreq/energy_performance_preference = balance_power
+/sys/devices/system/cpu/cpu2/cpufreq/energy_performance_available_preferences = default performance balance_performance balance_power power
+
+/sys/devices/system/cpu/cpu3/cpufreq/scaling_driver = intel_pstate
+/sys/devices/system/cpu/cpu3/cpufreq/scaling_governor = powersave
+/sys/devices/system/cpu/cpu3/cpufreq/scaling_available_governors = performance powersave
+/sys/devices/system/cpu/cpu3/cpufreq/scaling_min_freq = 800000 [kHz]
+/sys/devices/system/cpu/cpu3/cpufreq/scaling_max_freq = 3500000 [kHz]
+/sys/devices/system/cpu/cpu3/cpufreq/energy_performance_preference = balance_power
+/sys/devices/system/cpu/cpu3/cpufreq/energy_performance_available_preferences = default performance balance_performance balance_power power
+
+/sys/devices/system/cpu/cpu4/cpufreq/scaling_driver = intel_pstate
+/sys/devices/system/cpu/cpu4/cpufreq/scaling_governor = powersave
+/sys/devices/system/cpu/cpu4/cpufreq/scaling_available_governors = performance powersave
+/sys/devices/system/cpu/cpu4/cpufreq/scaling_min_freq = 800000 [kHz]
+/sys/devices/system/cpu/cpu4/cpufreq/scaling_max_freq = 3500000 [kHz]
+/sys/devices/system/cpu/cpu4/cpufreq/energy_performance_preference = balance_power
+/sys/devices/system/cpu/cpu4/cpufreq/energy_performance_available_preferences = default performance balance_performance balance_power power
+
+/sys/devices/system/cpu/cpu5/cpufreq/scaling_driver = intel_pstate
+/sys/devices/system/cpu/cpu5/cpufreq/scaling_governor = powersave
+/sys/devices/system/cpu/cpu5/cpufreq/scaling_available_governors = performance powersave
+/sys/devices/system/cpu/cpu5/cpufreq/scaling_min_freq = 800000 [kHz]
+/sys/devices/system/cpu/cpu5/cpufreq/scaling_max_freq = 3500000 [kHz]
+/sys/devices/system/cpu/cpu5/cpufreq/energy_performance_preference = balance_power
+/sys/devices/system/cpu/cpu5/cpufreq/energy_performance_available_preferences = default performance balance_performance balance_power power
+
+/sys/devices/system/cpu/cpu6/cpufreq/scaling_driver = intel_pstate
+/sys/devices/system/cpu/cpu6/cpufreq/scaling_governor = powersave
+/sys/devices/system/cpu/cpu6/cpufreq/scaling_available_governors = performance powersave
+/sys/devices/system/cpu/cpu6/cpufreq/scaling_min_freq = 800000 [kHz]
+/sys/devices/system/cpu/cpu6/cpufreq/scaling_max_freq = 3500000 [kHz]
+/sys/devices/system/cpu/cpu6/cpufreq/energy_performance_preference = balance_power
+/sys/devices/system/cpu/cpu6/cpufreq/energy_performance_available_preferences = default performance balance_performance balance_power power
+
+/sys/devices/system/cpu/cpu7/cpufreq/scaling_driver = intel_pstate
+/sys/devices/system/cpu/cpu7/cpufreq/scaling_governor = powersave
+/sys/devices/system/cpu/cpu7/cpufreq/scaling_available_governors = performance powersave
+/sys/devices/system/cpu/cpu7/cpufreq/scaling_min_freq = 800000 [kHz]
+/sys/devices/system/cpu/cpu7/cpufreq/scaling_max_freq = 3500000 [kHz]
+/sys/devices/system/cpu/cpu7/cpufreq/energy_performance_preference = balance_power
+/sys/devices/system/cpu/cpu7/cpufreq/energy_performance_available_preferences = default performance balance_performance balance_power power
+
+/sys/devices/system/cpu/intel_pstate/min_perf_pct = 22 [%]
+/sys/devices/system/cpu/intel_pstate/max_perf_pct = 100 [%]
+/sys/devices/system/cpu/intel_pstate/no_turbo = 0
+/sys/devices/system/cpu/intel_pstate/turbo_pct = 33 [%]
+/sys/devices/system/cpu/intel_pstate/num_pstates = 28
+
+x86_energy_perf_policy: program not installed.
+
+/sys/module/workqueue/parameters/power_efficient = Y
+/proc/sys/kernel/nmi_watchdog = 0
+
++++ Undervolting
+PHC kernel not available.
+```
+
+To show system data information.
+
+```
+$ sudo tlp-stat -s
+or
+$ sudo tlp-stat --system
+
+--- TLP 1.1 --------------------------------------------
+
++++ System Info
+System = LENOVO Lenovo ideapad Y700-15ISK 80NV
+BIOS = CDCN35WW
+Release = "Manjaro Linux"
+Kernel = 4.19.6-1-MANJARO #1 SMP PREEMPT Sat Dec 1 12:21:26 UTC 2018 x86_64
+/proc/cmdline = BOOT_IMAGE=/boot/vmlinuz-4.19-x86_64 root=UUID=69d9dd18-36be-4631-9ebb-78f05fe3217f rw quiet resume=UUID=a2092b92-af29-4760-8e68-7a201922573b
+Init system = systemd
+Boot mode = BIOS (CSM, Legacy)
+
++++ TLP Status
+State = enabled
+Last run = 11:04:00 IST, 596 sec(s) ago
+Mode = battery
+Power source = battery
+```
+
+To show temperatures and fan speed information.
+
+```
+$ sudo tlp-stat -t
+or
+$ sudo tlp-stat --temp
+
+--- TLP 1.1 --------------------------------------------
+
++++ Temperatures
+CPU temp = 36 [°C]
+Fan speed = (not available)
+```
+
+To show USB device data information.
+
+```
+$ sudo tlp-stat -u
+or
+$ sudo tlp-stat --usb
+
+--- TLP 1.1 --------------------------------------------
+
++++ USB
+Autosuspend = disabled
+Device whitelist = (not configured)
+Device blacklist = (not configured)
+Bluetooth blacklist = disabled
+Phone blacklist = disabled
+WWAN blacklist = enabled
+
+Bus 002 Device 001 ID 1d6b:0003 control = auto, autosuspend_delay_ms = 0 -- Linux Foundation 3.0 root hub (hub)
+Bus 001 Device 003 ID 174f:14e8 control = auto, autosuspend_delay_ms = 2000 -- Syntek (uvcvideo)
+Bus 001 Device 002 ID 17ef:6053 control = on, autosuspend_delay_ms = 2000 -- Lenovo (usbhid)
+Bus 001 Device 004 ID 8087:0a2b control = auto, autosuspend_delay_ms = 2000 -- Intel Corp. (btusb)
+Bus 001 Device 001 ID 1d6b:0002 control = auto, autosuspend_delay_ms = 0 -- Linux Foundation 2.0 root hub (hub)
+```
+
+To show warnings.
+
+```
+$ sudo tlp-stat -w
+or
+$ sudo tlp-stat --warn
+
+--- TLP 1.1 --------------------------------------------
+
+No warnings detected.
+```
+
+Status report with configuration and all active settings.
+
+```
+$ sudo tlp-stat
+
+--- TLP 1.1 --------------------------------------------
+
++++ Configured Settings: /etc/default/tlp
+TLP_ENABLE=1
+TLP_DEFAULT_MODE=AC
+TLP_PERSISTENT_DEFAULT=0
+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
+CPU_HWP_ON_AC=balance_performance
+CPU_HWP_ON_BAT=balance_power
+SCHED_POWERSAVE_ON_AC=0
+SCHED_POWERSAVE_ON_BAT=1
+NMI_WATCHDOG=0
+ENERGY_PERF_POLICY_ON_AC=performance
+ENERGY_PERF_POLICY_ON_BAT=power
+DISK_DEVICES="sda sdb"
+DISK_APM_LEVEL_ON_AC="254 254"
+DISK_APM_LEVEL_ON_BAT="128 128"
+SATA_LINKPWR_ON_AC="med_power_with_dipm max_performance"
+SATA_LINKPWR_ON_BAT="med_power_with_dipm max_performance"
+AHCI_RUNTIME_PM_TIMEOUT=15
+PCIE_ASPM_ON_AC=performance
+PCIE_ASPM_ON_BAT=powersave
+RADEON_POWER_PROFILE_ON_AC=default
+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_AC=0
+BAY_POWEROFF_ON_BAT=0
+BAY_DEVICE="sr0"
+RUNTIME_PM_ON_AC=on
+RUNTIME_PM_ON_BAT=auto
+RUNTIME_PM_DRIVER_BLACKLIST="amdgpu nouveau nvidia radeon pcieport"
+USB_AUTOSUSPEND=0
+USB_BLACKLIST_BTUSB=0
+USB_BLACKLIST_PHONE=0
+USB_BLACKLIST_PRINTER=1
+USB_BLACKLIST_WWAN=1
+RESTORE_DEVICE_STATE_ON_STARTUP=0
+
++++ System Info
+System = LENOVO Lenovo ideapad Y700-15ISK 80NV
+BIOS = CDCN35WW
+Release = "Manjaro Linux"
+Kernel = 4.19.6-1-MANJARO #1 SMP PREEMPT Sat Dec 1 12:21:26 UTC 2018 x86_64
+/proc/cmdline = BOOT_IMAGE=/boot/vmlinuz-4.19-x86_64 root=UUID=69d9dd18-36be-4631-9ebb-78f05fe3217f rw quiet resume=UUID=a2092b92-af29-4760-8e68-7a201922573b
+Init system = systemd
+Boot mode = BIOS (CSM, Legacy)
+
++++ TLP Status
+State = enabled
+Last run = 11:04:00 IST, 684 sec(s) ago
+Mode = battery
+Power source = battery
+
++++ Processor
+CPU model = Intel(R) Core(TM) i7-6700HQ CPU @ 2.60GHz
+
+/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]
+/sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq = 3500000 [kHz]
+/sys/devices/system/cpu/cpu0/cpufreq/energy_performance_preference = balance_power
+/sys/devices/system/cpu/cpu0/cpufreq/energy_performance_available_preferences = default performance balance_performance balance_power power
+
+/sys/devices/system/cpu/cpu1/cpufreq/scaling_driver = intel_pstate
+/sys/devices/system/cpu/cpu1/cpufreq/scaling_governor = powersave
+/sys/devices/system/cpu/cpu1/cpufreq/scaling_available_governors = performance powersave
+/sys/devices/system/cpu/cpu1/cpufreq/scaling_min_freq = 800000 [kHz]
+/sys/devices/system/cpu/cpu1/cpufreq/scaling_max_freq = 3500000 [kHz]
+/sys/devices/system/cpu/cpu1/cpufreq/energy_performance_preference = balance_power
+/sys/devices/system/cpu/cpu1/cpufreq/energy_performance_available_preferences = default performance balance_performance balance_power power
+
+/sys/devices/system/cpu/cpu2/cpufreq/scaling_driver = intel_pstate
+/sys/devices/system/cpu/cpu2/cpufreq/scaling_governor = powersave
+/sys/devices/system/cpu/cpu2/cpufreq/scaling_available_governors = performance powersave
+/sys/devices/system/cpu/cpu2/cpufreq/scaling_min_freq = 800000 [kHz]
+/sys/devices/system/cpu/cpu2/cpufreq/scaling_max_freq = 3500000 [kHz]
+/sys/devices/system/cpu/cpu2/cpufreq/energy_performance_preference = balance_power
+/sys/devices/system/cpu/cpu2/cpufreq/energy_performance_available_preferences = default performance balance_performance balance_power power
+
+/sys/devices/system/cpu/cpu3/cpufreq/scaling_driver = intel_pstate
+/sys/devices/system/cpu/cpu3/cpufreq/scaling_governor = powersave
+/sys/devices/system/cpu/cpu3/cpufreq/scaling_available_governors = performance powersave
+/sys/devices/system/cpu/cpu3/cpufreq/scaling_min_freq = 800000 [kHz]
+/sys/devices/system/cpu/cpu3/cpufreq/scaling_max_freq = 3500000 [kHz]
+/sys/devices/system/cpu/cpu3/cpufreq/energy_performance_preference = balance_power
+/sys/devices/system/cpu/cpu3/cpufreq/energy_performance_available_preferences = default performance balance_performance balance_power power
+
+/sys/devices/system/cpu/cpu4/cpufreq/scaling_driver = intel_pstate
+/sys/devices/system/cpu/cpu4/cpufreq/scaling_governor = powersave
+/sys/devices/system/cpu/cpu4/cpufreq/scaling_available_governors = performance powersave
+/sys/devices/system/cpu/cpu4/cpufreq/scaling_min_freq = 800000 [kHz]
+/sys/devices/system/cpu/cpu4/cpufreq/scaling_max_freq = 3500000 [kHz]
+/sys/devices/system/cpu/cpu4/cpufreq/energy_performance_preference = balance_power
+/sys/devices/system/cpu/cpu4/cpufreq/energy_performance_available_preferences = default performance balance_performance balance_power power
+
+/sys/devices/system/cpu/cpu5/cpufreq/scaling_driver = intel_pstate
+/sys/devices/system/cpu/cpu5/cpufreq/scaling_governor = powersave
+/sys/devices/system/cpu/cpu5/cpufreq/scaling_available_governors = performance powersave
+/sys/devices/system/cpu/cpu5/cpufreq/scaling_min_freq = 800000 [kHz]
+/sys/devices/system/cpu/cpu5/cpufreq/scaling_max_freq = 3500000 [kHz]
+/sys/devices/system/cpu/cpu5/cpufreq/energy_performance_preference = balance_power
+/sys/devices/system/cpu/cpu5/cpufreq/energy_performance_available_preferences = default performance balance_performance balance_power power
+
+/sys/devices/system/cpu/cpu6/cpufreq/scaling_driver = intel_pstate
+/sys/devices/system/cpu/cpu6/cpufreq/scaling_governor = powersave
+/sys/devices/system/cpu/cpu6/cpufreq/scaling_available_governors = performance powersave
+/sys/devices/system/cpu/cpu6/cpufreq/scaling_min_freq = 800000 [kHz]
+/sys/devices/system/cpu/cpu6/cpufreq/scaling_max_freq = 3500000 [kHz]
+/sys/devices/system/cpu/cpu6/cpufreq/energy_performance_preference = balance_power
+/sys/devices/system/cpu/cpu6/cpufreq/energy_performance_available_preferences = default performance balance_performance balance_power power
+
+/sys/devices/system/cpu/cpu7/cpufreq/scaling_driver = intel_pstate
+/sys/devices/system/cpu/cpu7/cpufreq/scaling_governor = powersave
+/sys/devices/system/cpu/cpu7/cpufreq/scaling_available_governors = performance powersave
+/sys/devices/system/cpu/cpu7/cpufreq/scaling_min_freq = 800000 [kHz]
+/sys/devices/system/cpu/cpu7/cpufreq/scaling_max_freq = 3500000 [kHz]
+/sys/devices/system/cpu/cpu7/cpufreq/energy_performance_preference = balance_power
+/sys/devices/system/cpu/cpu7/cpufreq/energy_performance_available_preferences = default performance balance_performance balance_power power
+
+/sys/devices/system/cpu/intel_pstate/min_perf_pct = 22 [%]
+/sys/devices/system/cpu/intel_pstate/max_perf_pct = 100 [%]
+/sys/devices/system/cpu/intel_pstate/no_turbo = 0
+/sys/devices/system/cpu/intel_pstate/turbo_pct = 33 [%]
+/sys/devices/system/cpu/intel_pstate/num_pstates = 28
+
+x86_energy_perf_policy: program not installed.
+
+/sys/module/workqueue/parameters/power_efficient = Y
+/proc/sys/kernel/nmi_watchdog = 0
+
++++ Undervolting
+PHC kernel not available.
+
++++ Temperatures
+CPU temp = 42 [°C]
+Fan speed = (not available)
+
++++ File System
+/proc/sys/vm/laptop_mode = 2
+/proc/sys/vm/dirty_writeback_centisecs = 6000
+/proc/sys/vm/dirty_expire_centisecs = 6000
+/proc/sys/vm/dirty_ratio = 20
+/proc/sys/vm/dirty_background_ratio = 10
+
++++ Storage Devices
+/dev/sda:
+ Model = WDC WD10SPCX-24HWST1
+ Firmware = 02.01A02
+ APM Level = 128
+ Status = active/idle
+ Scheduler = mq-deadline
+
+ Runtime PM: control = on, autosuspend_delay = (not available)
+
+ SMART info:
+ 4 Start_Stop_Count = 18787
+ 5 Reallocated_Sector_Ct = 0
+ 9 Power_On_Hours = 606 [h]
+ 12 Power_Cycle_Count = 1792
+ 193 Load_Cycle_Count = 25777
+ 194 Temperature_Celsius = 31 [°C]
+
+
++++ AHCI Link Power Management (ALPM)
+/sys/class/scsi_host/host0/link_power_management_policy = med_power_with_dipm
+/sys/class/scsi_host/host1/link_power_management_policy = med_power_with_dipm
+/sys/class/scsi_host/host2/link_power_management_policy = med_power_with_dipm
+/sys/class/scsi_host/host3/link_power_management_policy = med_power_with_dipm
+
++++ AHCI Host Controller Runtime Power Management
+/sys/bus/pci/devices/0000:00:17.0/ata1/power/control = on
+/sys/bus/pci/devices/0000:00:17.0/ata2/power/control = on
+/sys/bus/pci/devices/0000:00:17.0/ata3/power/control = on
+/sys/bus/pci/devices/0000:00:17.0/ata4/power/control = on
+
++++ PCIe Active State Power Management
+/sys/module/pcie_aspm/parameters/policy = powersave
+
++++ Intel Graphics
+/sys/module/i915/parameters/enable_dc = -1 (use per-chip default)
+/sys/module/i915/parameters/enable_fbc = 1 (enabled)
+/sys/module/i915/parameters/enable_psr = 0 (disabled)
+/sys/module/i915/parameters/modeset = -1 (use per-chip default)
+
++++ Wireless
+bluetooth = on
+wifi = on
+wwan = none (no device)
+
+hci0(btusb) : bluetooth, not connected
+wlp8s0(iwlwifi) : wifi, connected, power management = on
+
++++ Audio
+/sys/module/snd_hda_intel/parameters/power_save = 1
+/sys/module/snd_hda_intel/parameters/power_save_controller = Y
+
++++ Runtime Power Management
+Device blacklist = (not configured)
+Driver blacklist = amdgpu nouveau nvidia radeon pcieport
+
+/sys/bus/pci/devices/0000:00:00.0/power/control = auto (0x060000, Host bridge, skl_uncore)
+/sys/bus/pci/devices/0000:00:01.0/power/control = auto (0x060400, PCI bridge, pcieport)
+/sys/bus/pci/devices/0000:00:02.0/power/control = auto (0x030000, VGA compatible controller, i915)
+/sys/bus/pci/devices/0000:00:14.0/power/control = auto (0x0c0330, USB controller, xhci_hcd)
+/sys/bus/pci/devices/0000:00:16.0/power/control = auto (0x078000, Communication controller, mei_me)
+/sys/bus/pci/devices/0000:00:17.0/power/control = auto (0x010601, SATA controller, ahci)
+/sys/bus/pci/devices/0000:00:1c.0/power/control = auto (0x060400, PCI bridge, pcieport)
+/sys/bus/pci/devices/0000:00:1c.2/power/control = auto (0x060400, PCI bridge, pcieport)
+/sys/bus/pci/devices/0000:00:1c.3/power/control = auto (0x060400, PCI bridge, pcieport)
+/sys/bus/pci/devices/0000:00:1d.0/power/control = auto (0x060400, PCI bridge, pcieport)
+/sys/bus/pci/devices/0000:00:1f.0/power/control = auto (0x060100, ISA bridge, no driver)
+/sys/bus/pci/devices/0000:00:1f.2/power/control = auto (0x058000, Memory controller, no driver)
+/sys/bus/pci/devices/0000:00:1f.3/power/control = auto (0x040300, Audio device, snd_hda_intel)
+/sys/bus/pci/devices/0000:00:1f.4/power/control = auto (0x0c0500, SMBus, i801_smbus)
+/sys/bus/pci/devices/0000:01:00.0/power/control = auto (0x030200, 3D controller, nouveau)
+/sys/bus/pci/devices/0000:07:00.0/power/control = auto (0x080501, SD Host controller, sdhci-pci)
+/sys/bus/pci/devices/0000:08:00.0/power/control = auto (0x028000, Network controller, iwlwifi)
+/sys/bus/pci/devices/0000:09:00.0/power/control = auto (0x020000, Ethernet controller, r8168)
+/sys/bus/pci/devices/0000:0a:00.0/power/control = auto (0x010802, Non-Volatile memory controller, nvme)
+
++++ USB
+Autosuspend = disabled
+Device whitelist = (not configured)
+Device blacklist = (not configured)
+Bluetooth blacklist = disabled
+Phone blacklist = disabled
+WWAN blacklist = enabled
+
+Bus 002 Device 001 ID 1d6b:0003 control = auto, autosuspend_delay_ms = 0 -- Linux Foundation 3.0 root hub (hub)
+Bus 001 Device 003 ID 174f:14e8 control = auto, autosuspend_delay_ms = 2000 -- Syntek (uvcvideo)
+Bus 001 Device 002 ID 17ef:6053 control = on, autosuspend_delay_ms = 2000 -- Lenovo (usbhid)
+Bus 001 Device 004 ID 8087:0a2b control = auto, autosuspend_delay_ms = 2000 -- Intel Corp. (btusb)
+Bus 001 Device 001 ID 1d6b:0002 control = auto, autosuspend_delay_ms = 0 -- Linux Foundation 2.0 root hub (hub)
+
++++ Battery Status
+/sys/class/power_supply/BAT0/manufacturer = SMP
+/sys/class/power_supply/BAT0/model_name = L14M4P23
+/sys/class/power_supply/BAT0/cycle_count = (not supported)
+/sys/class/power_supply/BAT0/energy_full_design = 60000 [mWh]
+/sys/class/power_supply/BAT0/energy_full = 51690 [mWh]
+/sys/class/power_supply/BAT0/energy_now = 50140 [mWh]
+/sys/class/power_supply/BAT0/power_now = 12185 [mW]
+/sys/class/power_supply/BAT0/status = Discharging
+
+Charge = 97.0 [%]
+Capacity = 86.2 [%]
+```
+
+--------------------------------------------------------------------------------
+
+via: https://www.2daygeek.com/tlp-increase-optimize-linux-laptop-battery-life/
+
+作者：[Magesh Maruthamuthu][a]
+选题：[lujun9972][b]
+译者：[译者ID](https://github.com/译者ID)
+校对：[校对者ID](https://github.com/校对者ID)
+
+本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
+
+[a]: https://www.2daygeek.com/author/magesh/
+[b]: https://github.com/lujun9972
+[1]: https://www.2daygeek.com/check-laptop-battery-status-and-charging-state-in-linux-terminal/
+[2]: https://www.2daygeek.com/powertop-monitors-laptop-battery-usage-linux/
+[3]: https://www.2daygeek.com/monitor-laptop-battery-charging-state-linux/
+[4]: https://linrunner.de/en/tlp/docs/tlp-linux-advanced-power-management.html
+[5]: https://www.2daygeek.com/category/package-management/
+[6]: https://www.2daygeek.com/dnf-command-examples-manage-packages-fedora-system/
+[7]: https://www.2daygeek.com/apt-get-apt-cache-command-examples-manage-packages-debian-ubuntu-systems/
+[8]: https://www.2daygeek.com/apt-command-examples-manage-packages-debian-ubuntu-systems/
+[9]: https://www.2daygeek.com/pacman-command-examples-manage-packages-arch-linux-system/
+[10]: https://www.2daygeek.com/yum-command-examples-manage-packages-rhel-centos-systems/
+[11]: https://www.2daygeek.com/zypper-command-examples-manage-packages-opensuse-system/