联想t14p，285h的处理器， 不带n卡，6.19.9内核。
基本上一个小时22%到24%左右，试了power-profile-daemon和tlp, 都没啥明显作用。切换到节能档勉强算降到一小时20%。
求解决方案。
一个排查思路是：您可以先安装 powertop，然后到 PowerTop 里面看一下各进程的耗电情况，检查一下有没有耗电量偏高的进程。
我看别人的category里面还有process. 我这怎么都是device？
powertop上面一部分：
Summary: -nan wakeups/second, -nan GPU ops/seconds, -nan VFS ops/sec and -0.0% CPU use
Usage Events/s Category Description
100.0% Device USB device: usb-device-8087-0037
100.0% Device PCI Device: Intel Corporation Arrow Lake-H/U PCIe Root Port #11 (PXPE)
100.0% Device USB device: USB 10/100/1G/2.5G LAN (Realtek)
100.0% Device PCI Device: Intel Corporation Meteor Lake-P Dynamic Tuning Technology
100.0% Device USB device: USB3.0 Hub (Intel Corporation.)
100.0% Device USB device: xHCI Host Controller
100.0% Device USB device: USB2.0 Hub (Fresco Logic, Inc.)
100.0% Device Radio device: btusb
100.0% Device USB device: USB7206 Smart Hub (Microchip)
0.0% Device PCI Device: Intel Corporation Thunderbolt 4 Bridge [Goshen Ridge 2020]
0.0% Device PCI Device: Intel Corporation Thunderbolt 4 Bridge [Goshen Ridge 2020]
100.0% Device PCI Device: Intel Corporation Arrow Lake Shared SRAM
100.0% Device PCI Device: Intel Corporation Arrow Lake-H 6p+8e cores Host Bridge/DRAM Controller
100.0% Device PCI Device: Yangtze Memory Technologies Co.,Ltd PC450 M.2 2280 NVMe SSD (DRAM-less)
100.0% Device USB device: USB2 Controller Hub (Microchip Tech)
100.0% Device PCI Device: Intel Corporation Arrow Lake-H/U PCIe Root Port #9 (PXPC)
100.0% Device USB device: USB4206 Smart Hub (Microchip)
100.0% Device PCI Device: Intel Corporation Arrow Lake USB 3.2 xHCI Controller
17.1% Device runtime-i2c_designware.0
17.3% Device PCI Device: Intel Corporation Arrow Lake-H [Serial IO I2C Host Controller]
8.2 pkts/s Device Network interface: wlan0 (iwlwifi)
100.0% Device PCI Device: Intel Corporation Meteor Lake-P Thunderbolt 4 NHI #0
100.0% Device PCI Device: Intel Corporation Meteor Lake-P Platform Monitoring Technology
100.0% Device Radio device: thinkpad_acpi
100.0% Device PCI Device: Shenzhen Unionmemory Information System Ltd. Device 6c14
100.0% Device PCI Device: Intel Corporation Meteor Lake-P Thunderbolt 4 USB Controller
100.0% Device USB device: xHCI Host Controller
0.0% Device runtime-PNP0C0C:00
100.0% Device PCI Device: Intel Corporation Arrow Lake SPI Controller
0.0 pkts/s Device Network interface: enp0s31f6 (e1000e)
0.0% Device runtime-INTC1062:00
0.0% Device USB device: USB4216 Smart Hub (Microchip)
0.0% Device PCI Device: Intel Corporation Arrow Lake HECI Controller #1
0.0% Device PCI Device: Intel Corporation Meteor Lake-P Thunderbolt 4 PCI Express Root Port #2
0.0% Device PCI Device: Intel Corporation Arrow Lake-H/U PCIe Root Port #1
0.0% Device PCI Device: Intel Corporation Thunderbolt 4 Bridge [Goshen Ridge 2020]
0.0% Device runtime-ACPI0003:00
0.0% Device USB device: USB4206 Smart Hub (Microchip)
0.0% Device PCI Device: Intel Corporation Thunderbolt 4 Bridge [Goshen Ridge 2020]
0.0% Device PCI Device: Intel Corporation Thunderbolt 4 Bridge [Goshen Ridge 2020]
0.0% Device runtime-PNP0C14:00
0.0 pkts/s Device Network interface: enp0s13f0u1u4u2 (r8152)
0.0% Device runtime-idma64.1
0.0% Device runtime-INTC1062:01
0.0% Device runtime-INTC1062:05
0.0% Device I2C Adapter (i2c-12): AUX USBC1/DDI TC1/PHY TC1
70.0% Device Display backlight
powertop的的vice：
Usage Device name
-0.0% CPU core
70.0% Display backlight
100.0% PCI Device: Intel Corporation Meteor Lake-P Thunderbolt 4 USB Controller
100.0% PCI Device: Intel Corporation Meteor Lake-P Dynamic Tuning Technology
100.0% PCI Device: Intel Corporation Arrow Lake-H 6p+8e cores Host Bridge/DRAM Controller
100.0% PCI Device: Intel Corporation Arrow Lake Shared SRAM
100.0% PCI Device: Intel Corporation Arrow Lake-H/U PCIe Root Port #11 (PXPE)
100.0% USB device: usb-device-8087-0037
100.0% USB device: USB7206 Smart Hub (Microchip)
100.0% Radio device: btusb
100.0% USB device: USB2.0 Hub (Fresco Logic, Inc.)
100.0% USB device: xHCI Host Controller
100.0% USB device: USB3.0 Hub (Intel Corporation.)
100.0% USB device: xHCI Host Controller
100.0% USB device: USB2 Controller Hub (Microchip Tech)
100.0% PCI Device: Yangtze Memory Technologies Co.,Ltd PC450 M.2 2280 NVMe SSD (DRAM-less)
100.0% USB device: USB 10/100/1G/2.5G LAN (Realtek)
100.0% PCI Device: Intel Corporation Arrow Lake-H/U PCIe Root Port #9 (PXPC)
100.0% PCI Device: Shenzhen Unionmemory Information System Ltd. Device 6c14
100.0% Radio device: thinkpad_acpi
100.0% Radio device: iwlwifi
100.0% PCI Device: Intel Corporation Meteor Lake-P Platform Monitoring Technology
100.0% PCI Device: Intel Corporation Meteor Lake-P Thunderbolt 4 NHI #0
100.0% PCI Device: Intel Corporation Arrow Lake CNVi WiFi
100.0% PCI Device: Intel Corporation Arrow Lake SPI Controller
100.0% PCI Device: Intel Corporation Arrow Lake USB 3.2 xHCI Controller
100.0% PCI Device: Intel Corporation Arrow Lake-P [Arc Pro 130T/140T]
100.0% USB device: USB4206 Smart Hub (Microchip)
25.7% PCI Device: Intel Corporation Ethernet Connection (24) I219-V
2.4 pkts/s Network interface: wlan0 (iwlwifi)
0.0% PCI Device: Intel Corporation Arrow Lake HECI Controller #1
0.0% PCI Device: Intel Corporation Meteor Lake-P Thunderbolt 4 PCI Express Root Port #2
0.0% PCI Device: Intel Corporation Arrow Lake-H/U PCIe Root Port #1
0.0% PCI Device: Intel Corporation Thunderbolt 4 Bridge [Goshen Ridge 2020]
0.0% PCI Device: Intel Corporation Thunderbolt 4 Bridge [Goshen Ridge 2020]
0.0% PCI Device: Intel Corporation Thunderbolt 4 Bridge [Goshen Ridge 2020]
0.0% PCI Device: Intel Corporation Thunderbolt 4 Bridge [Goshen Ridge 2020]
0.0% PCI Device: Intel Corporation Thunderbolt 4 Bridge [Goshen Ridge 2020]
0.0% runtime-PNP0C14:00
0.0 pkts/s Network interface: enp0s13f0u1u4u2 (r8152)
我这边 category 里还有 Timer、Interrupt、Process、kWork 等。或许是您那帮的 powertop 没有搜集到足够的测量数据？
或许可以尝试：
- 在电池供电的情况下多运行一段时间，收集更多的数据。
- 运行 powertop 时增加
--calibrate参数，进行校准。
参考资料：