多年来，Linux 在电池优化方面取得了很大进步，但我们仍然需要做一些必要的事情来改善 Linux 中笔记本电脑的电池寿命。

-- Magesh Maruthamuthu（作者）

笔记本电池是针对 Windows 操作系统进行了高度优化的，当我在笔记本电脑中使用 Windows 操作系统时，我已经意识到这一点，但对于 Linux 来说却不一样。

多年来，Linux 在电池优化方面取得了很大进步，但我们仍然需要做一些必要的事情来改善 Linux 中笔记本电脑的电池寿命。

当我考虑延长电池寿命时，我没有多少选择，但我觉得 TLP 对我来说是一个更好的解决方案，所以我会继续使用它。

在本教程中，我们将详细讨论 TLP 以延长电池寿命。

我们之前在我们的网站上写过三篇关于 Linux 笔记本电池节电工具 的文章： PowerTOP 和 电池充电状态 。

TLP

TLP 是一款自由开源的高级电源管理工具，可在不进行任何配置更改的情况下延长电池寿命。

由于它的默认配置已针对电池寿命进行了优化，因此你可能只需要安装，然后就忘记它吧。

此外，它可以高度定制化，以满足你的特定要求。TLP 是一个具有自动后台任务的纯命令行工具。它不包含GUI。

TLP 适用于各种品牌的笔记本电脑。设置电池充电阈值仅适用于 IBM/Lenovo ThinkPad。

所有 TLP 设置都存储在 /etc/default/tlp 中。其默认配置提供了开箱即用的优化的节能设置。

以下 TLP 设置可用于自定义，如果需要，你可以相应地进行必要的更改。

TLP 功能内核笔记本电脑模式和脏缓冲区超时处理器频率调整，包括 “turbo boost”/“turbo core”限制最大/最小的 P 状态以控制 CPU 的功耗HWP 能源性能提示用于多核/超线程的功率感知进程调度程序处理器性能与节能策略（x86_energy_perf_policy）硬盘高级电源管理级别（APM）和降速超时（按磁盘）AHCI 链路电源管理（ALPM）与设备黑名单PCIe 活动状态电源管理（PCIe ASPM）PCI(e) 总线设备的运行时电源管理Radeon 图形电源管理（KMS 和 DPM）Wifi 省电模式关闭驱动器托架中的光盘驱动器音频省电模式I/O 调度程序（按磁盘）USB 自动暂停，支持设备黑名单/白名单（输入设备自动排除）在系统启动和关闭时启用或禁用集成的 wifi、蓝牙或 wwan 设备在系统启动时恢复无线电设备状态（从之前的关机时的状态）无线电设备向导：在网络连接/断开和停靠/取消停靠时切换无线电禁用 LAN 唤醒挂起/休眠后恢复集成的 WWAN 和蓝牙状态英特尔处理器的动态电源降低 —— 需要内核和 PHC-Patch 支持电池充电阈值 —— 仅限 ThinkPad重新校准电池 —— 仅限 ThinkPad如何在 Linux 上安装 TLP

TLP 包在大多数发行版官方存储库中都可用，因此，使用发行版的 包管理器 来安装它。

对于 Fedora 系统，使用 DNF 命令 安装 TLP。

$ sudo dnf install tlp tlp-rdw

ThinkPad 需要一些附加软件包。

$ sudo dnf install (rpm -E %fedora).noarch.rpm

$ sudo dnf install (rpm -E %fedora).noarch.rpm

$ sudo dnf install akmod-tp_smapi akmod-acpi_call kernel-devel

安装 smartmontool 以显示 tlp-stat 中 S.M.A.R.T. 数据。

$ sudo dnf install smartmontools

对于 Debian/Ubuntu 系统，使用 APT-GET 命令 或 APT 命令 安装 TLP。

$ sudo apt install tlp tlp-rdw

ThinkPad 需要一些附加软件包。

$ sudo apt-get install tp-smapi-dkms acpi-call-dkms

安装 smartmontool 以显示 tlp-stat 中 S.M.A.R.T. 数据。

$ sudo apt-get install smartmontools

当基于 Ubuntu 的系统的官方软件包过时时，请使用以下 PPA 存储库，该存储库提供最新版本。运行以下命令以使用 PPA 安装 TLP。

$ sudo apt-get install tlp tlp-rdw

对于基于 Arch Linux 的系统，使用 Pacman 命令 安装 TLP。

$ sudo pacman -S tlp tlp-rdw

ThinkPad 需要一些附加软件包。

$ pacman -S tp_smapi acpi_call

安装 smartmontool 以显示 tlp-stat 中 S.M.A.R.T. 数据。

$ sudo pacman -S smartmontools

对于基于 Arch Linux 的系统，在启动时启用 TLP 和 TLP-Sleep 服务。

$ sudo systemctl enable tlp.service

$ sudo systemctl enable tlp-sleep.service

对于基于 Arch Linux 的系统，你还应该屏蔽以下服务以避免冲突，并确保 TLP 的无线电设备切换选项的正确操作。

$ sudo systemctl mask systemd-rfkill.service

$ sudo systemctl mask systemd-rfkill.socket

对于 RHEL/CentOS 系统，使用 YUM 命令 安装 TLP。

$ sudo yum install tlp tlp-rdw

安装 smartmontool 以显示 tlp-stat 中 S.M.A.R.T. 数据。

$ sudo yum install smartmontools

对于 openSUSE Leap 系统，使用 Zypper 命令 安装 TLP。

$ sudo zypper install TLP

安装 smartmontool 以显示 tlp-stat 中 S.M.A.R.T. 数据。

$ sudo zypper install smartmontools

成功安装 TLP 后，使用以下命令启动服务。

$ systemctl start tlp.service

使用方法显示电池信息

$ sudo tlp-stat -b

或

$ 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 [%]

显示磁盘信息

$ sudo tlp-stat -d

或

$ 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

显示 PCI 设备信息

$ sudo tlp-stat -e

或

$ sudo tlp-stat --pcie

$ 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)

......

显示图形卡信息

$ sudo tlp-stat -g

或

$ 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)

显示处理器信息

$ sudo tlp-stat -p

或

$ 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/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.

显示系统数据信息

$ sudo tlp-stat -s

或

$ 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

显示温度和风扇速度信息

$ sudo tlp-stat -t

或

$ sudo tlp-stat --temp

--- TLP 1.1 --------------------------------------------

+++ Temperatures

CPU temp = 36 [°C]

Fan speed = (not available)

显示 USB 设备数据信息

$ sudo tlp-stat -u

或

$ 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)

......

显示警告信息

$ sudo tlp-stat -w

或

$ sudo tlp-stat --warn

--- TLP 1.1 --------------------------------------------

No warnings detected.

状态报告及配置和所有活动的设置

$ 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

......

+++ 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/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)

......

+++ 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:

作者： Magesh Maruthamuthu 选题： lujun9972 译者： wxy 校对： wxy

本文由 LCTT 原创编译， Linux中国 荣誉推出

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