У меня всегда работал режим гибернации, в настройках системы установил режим гибернации через 2 часа. Утром выходил из спящего режима кнопкой питания.
Внезапно он перестал работать. Каждое утро он все еще включен. Попробовал выбрать Suspend из меню, система ведет себя так, как будто она собирается спать, т. е. подсветка клавиатуры гаснет, мониторы выключаются и т. д., но затем она снова включается.
Dmseg:
[ 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
решение1
Судя по журналу, система получила событие, которое немедленно вывело ее из спящего режима.
Вы начали использовать какие-либо новые USB-устройства, например новую мышь или клавиатуру?
В ходе исследования я пришел к выводу, что это, скорее всего, устройство, посылающее сигнал к пробуждению, когда этого делать не следует.