> For the complete documentation index, see [llms.txt](https://huataihuang.gitbook.io/cloud-atlas-draft/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://huataihuang.gitbook.io/cloud-atlas-draft/os/linux/kernel/cpu/acpi_wake_up_system_sleep_state_s3.md). # 笔记本suspended后数秒无故wake up问题排查（"ACPI: Waking up from system sleep state S3"） 在MacBook Pro上安装了Fedora 26操作系统，桌面是LXQt，设置了合上笔记本屏幕就进入suspend，但是，非常头疼的时，过几秒种就立即启动起来，导致笔记本放在包里面烫得不得了（和烧热的铁板一样）。 检查message日志显示系统suspended之后，立即被ACPI唤醒 ``` ... Nov 7 21:23:04 DevStudio kernel: smpboot: CPU 4 is now offline Nov 7 21:23:04 DevStudio kernel: IRQ 33: no longer affine to CPU5 Nov 7 21:23:04 DevStudio kernel: smpboot: CPU 5 is now offline Nov 7 21:23:04 DevStudio kernel: IRQ 18: no longer affine to CPU6 Nov 7 21:23:04 DevStudio kernel: smpboot: CPU 6 is now offline Nov 7 21:23:04 DevStudio kernel: smpboot: CPU 7 is now offline Nov 7 21:23:04 DevStudio kernel: ACPI: Low-level resume complete Nov 7 21:23:04 DevStudio kernel: ACPI: EC: EC started Nov 7 21:23:04 DevStudio kernel: PM: Restoring platform NVS memory Nov 7 21:23:04 DevStudio kernel: Suspended for 2.688 seconds Nov 7 21:23:04 DevStudio kernel: Enabling non-boot CPUs ... Nov 7 21:23:04 DevStudio kernel: x86: Booting SMP configuration: Nov 7 21:23:04 DevStudio kernel: smpboot: Booting Node 0 Processor 1 APIC 0x2 Nov 7 21:23:04 DevStudio kernel: cache: parent cpu1 should not be sleeping Nov 7 21:23:04 DevStudio kernel: CPU1 is up Nov 7 21:23:04 DevStudio kernel: smpboot: Booting Node 0 Processor 2 APIC 0x4 Nov 7 21:23:04 DevStudio kernel: cache: parent cpu2 should not be sleeping Nov 7 21:23:04 DevStudio kernel: CPU2 is up Nov 7 21:23:04 DevStudio kernel: smpboot: Booting Node 0 Processor 3 APIC 0x6 Nov 7 21:23:04 DevStudio kernel: cache: parent cpu3 should not be sleeping Nov 7 21:23:04 DevStudio kernel: CPU3 is up Nov 7 21:23:04 DevStudio kernel: smpboot: Booting Node 0 Processor 4 APIC 0x1 Nov 7 21:23:04 DevStudio kernel: cache: parent cpu4 should not be sleeping Nov 7 21:23:04 DevStudio kernel: CPU4 is up Nov 7 21:23:04 DevStudio kernel: smpboot: Booting Node 0 Processor 5 APIC 0x3 Nov 7 21:23:04 DevStudio kernel: cache: parent cpu5 should not be sleeping Nov 7 21:23:04 DevStudio kernel: CPU5 is up Nov 7 21:23:04 DevStudio kernel: smpboot: Booting Node 0 Processor 6 APIC 0x5 Nov 7 21:23:04 DevStudio kernel: cache: parent cpu6 should not be sleeping Nov 7 21:23:04 DevStudio kernel: CPU6 is up Nov 7 21:23:04 DevStudio kernel: smpboot: Booting Node 0 Processor 7 APIC 0x7 Nov 7 21:23:04 DevStudio kernel: cache: parent cpu7 should not be sleeping Nov 7 21:23:04 DevStudio kernel: CPU7 is up Nov 7 21:23:04 DevStudio kernel: ACPI: Waking up from system sleep state S3 ``` 导致上述休眠（suspended）之后立即被唤醒，是因为ACPI电源管理`wakeup`中有某个激活的设备触发导致的。具体是哪个设备需要检查自己笔记本的配置。 * 检查`wakeup`事件： ``` cat /proc/acpi/wakeup ``` 在我的笔记上上显示输出 ``` Device S-state Status Sysfs node P0P2 S3 *disabled pci:0000:00:01.0 GFX0 S3 *disabled pci:0000:01:00.0 PEG1 S3 *disabled pci:0000:00:01.1 EC S4 *disabled platform:PNP0C09:00 GMUX S3 *disabled pnp:00:03 HDEF S3 *disabled pci:0000:00:1b.0 RP03 S3 *disabled pci:0000:00:1c.2 ARPT S4 *disabled pci:0000:03:00.0 RP04 S3 *disabled pci:0000:00:1c.3 RP05 S3 *disabled pci:0000:00:1c.4 XHC1 S3 *enabled pci:0000:00:14.0 ADP1 S4 *disabled platform:ACPI0003:00 LID0 S4 *enabled platform:PNP0C0D:00 ``` 也就是说，系统中有两个可能触发唤醒的设备分别如下 ``` Device S-state Status Sysfs node XHC1 S3 *enabled pci:0000:00:14.0 LID0 S4 *enabled platform:PNP0C0D:00 ``` * 要尝试禁用某个设备唤醒，只要将这个设备`echo`到`/proc/acpi/wakeup`就可以关闭 ``` echo XHC1 | sudo tee /proc/acpi/wakeup ``` * 然后再次检查`wakeup`事件，就可以看到只有`LID0`可以唤醒系统 ``` Device S-state Status Sysfs node P0P2 S3 *disabled pci:0000:00:01.0 GFX0 S3 *disabled pci:0000:01:00.0 PEG1 S3 *disabled pci:0000:00:01.1 EC S4 *disabled platform:PNP0C09:00 GMUX S3 *disabled pnp:00:03 HDEF S3 *disabled pci:0000:00:1b.0 RP03 S3 *disabled pci:0000:00:1c.2 ARPT S4 *disabled pci:0000:03:00.0 RP04 S3 *disabled pci:0000:00:1c.3 RP05 S3 *disabled pci:0000:00:1c.4 XHC1 S3 *disabled pci:0000:00:14.0 ADP1 S4 *disabled platform:ACPI0003:00 LID0 S4 *enabled platform:PNP0C0D:00 ``` 再次验证就发现休眠作用已经工作正常。 另外，如果要禁用多个设备，如`XHC EHC1 EHC2`，可以使用如下脚本 ```bash for device in XHC EHC1 EHC2; do grep $device /proc/acpi/wakeup | grep enabled > /dev/null && { echo Disabling wakeup on $device echo $device > /proc/acpi/wakeup } done ``` > 将上述设置添加到启动`/etc/rc.local`脚本中，参考[systemd管理rc.local启动](https://github.com/huataihuang/cloud-atlas-draft/tree/6f3204fffc11cf006abd394631e2598d98b415c3/os/linux/redhat/system_administration/systemd/rc_local/README.md) ## 参考 * [Ubuntu wakes up after few seconds of sleep](https://askubuntu.com/questions/598236/ubuntu-wakes-up-after-few-seconds-of-sleep)