休眠对我来说一直都很好用，在系统设置中将其设置为 2 小时后休眠。早上用电源按钮将其唤醒。
突然它停止工作了。每天早上它都还开着。尝试从菜单中选择“挂起”，系统表现得好像要睡觉了，即键盘灯熄灭、显示器关闭等，但随后它又恢复了。
留言:
[ 479.172551] PM: Syncing filesystems ... done.
[ 479.180451] PM: Preparing system for mem sleep
[ 479.180575] Freezing user space processes ... (elapsed 0.001 seconds) done.
[ 479.182373] Freezing remaining freezable tasks ... (elapsed 0.001 seconds) done.
[ 479.183589] PM: Entering mem sleep
[ 479.183611] Suspending console(s) (use no_console_suspend to debug)
[ 479.183914] sd 2:0:0:0: [sda] Synchronizing SCSI cache
[ 479.185589] sd 2:0:0:0: [sda] Stopping disk
[ 479.186962] serial 00:0c: disabled
[ 479.186966] serial 00:0c: System wakeup disabled by ACPI
[ 479.186997] i8042 kbd 00:0a: System wakeup disabled by ACPI
[ 479.187104] parport_pc 00:05: disabled
[ 479.508035] PM: suspend of devices complete after 324.202 msecs
[ 479.508251] PM: late suspend of devices complete after 0.213 msecs
[ 479.508361] pcieport 0000:00:1c.0: System wakeup enabled by ACPI
[ 479.540141] PM: noirq suspend of devices complete after 31.888 msecs
[ 479.540400] ACPI: Preparing to enter system sleep state S3
[ 479.540586] PM: Saving platform NVS memory
[ 479.540737] Disabling non-boot CPUs ...
[ 479.644052] smpboot: CPU 1 is now offline
[ 479.644215] ACPI: Low-level resume complete
[ 479.644215] PM: Restoring platform NVS memory
[ 479.644215] Enabling non-boot CPUs ...
[ 479.644215] x86: Booting SMP configuration:
[ 479.644215] smpboot: Booting Node 0 Processor 1 APIC 0x1
[ 479.657736] CPU1 is up
[ 479.659085] ACPI: Waking up from system sleep state S3
[ 479.736216] PM: noirq resume of devices complete after 76.963 msecs
[ 479.736309] PM: early resume of devices complete after 0.069 msecs
[ 479.736398] snd_hda_intel 0000:00:1b.0: irq 43 for MSI/MSI-X
[ 479.736497] usb usb3: root hub lost power or was reset
[ 479.736524] usb usb2: root hub lost power or was reset
[ 479.736546] pcieport 0000:00:1c.0: System wakeup disabled by ACPI
[ 479.736622] usb usb4: root hub lost power or was reset
[ 479.863636] usb usb5: root hub lost power or was reset
[ 479.865165] parport_pc 00:05: activated
[ 479.865511] serial 00:0c: activated
[ 480.048256] ata1.00: ACPI cmd ef/03:44:00:00:00:a0 (SET FEATURES) filtered out
[ 480.048258] ata1.00: ACPI cmd ef/03:0c:00:00:00:a0 (SET FEATURES) filtered out
[ 480.048260] ata1.00: ACPI cmd f5/00:00:00:00:00:00 (SECURITY FREEZE LOCK) filtered out
[ 480.064153] ata1.00: configured for UDMA/66
[ 480.156109] ata3.00: ACPI cmd ef/03:45:00:00:00:a0 (SET FEATURES) filtered out
[ 480.156111] ata3.00: ACPI cmd ef/03:0c:00:00:00:a0 (SET FEATURES) filtered out
[ 480.158075] ata3.00: ACPI cmd c6/00:10:00:00:00:a0 (SET MULTIPLE MODE) succeeded
[ 480.158077] ata3.00: ACPI cmd f5/00:00:00:00:00:00 (SECURITY FREEZE LOCK) filtered out
[ 480.198089] ata3.00: configured for UDMA/133
[ 480.198108] sd 2:0:0:0: [sda] Starting disk
[ 480.332020] usb 2-2: reset low-speed USB device number 2 using uhci_hcd
[ 480.880048] usb 3-2: reset low-speed USB device number 2 using uhci_hcd
[ 481.197035] PM: resume of devices complete after 1460.723 msecs
[ 481.197278] PM: Finishing wakeup.
[ 481.197279] Restarting tasks ... done.
[ 481.791677] r8169 0000:02:00.0 eth1: link down
[ 481.791687] r8169 0000:02:00.0 eth1: link down
[ 481.791813] IPv6: ADDRCONF(NETDEV_UP): eth1: link is not ready
[ 483.788986] r8169 0000:02:00.0 eth1: link up
[ 483.789000] IPv6: ADDRCONF(NETDEV_CHANGE): eth1: link becomes ready
答案1
根据日志，系统似乎收到了一个事件，导致其立即退出睡眠状态。
您是否开始使用任何新的 USB 设备，例如新鼠标或键盘？
我进行研究后发现，这很可能是一个设备在不应该唤醒的时候发出了唤醒信号。