¿Por qué mi máquina ubuntu dejó de suspender?

A veces subo arriba y mi computadora se ha suspendido y se inicia o se inicia o lo que sea. ¿Hay algún registro en alguna parte que muestre qué causó que se dejara de suspender? (es decir, mouse, teclado, paquete mágico, botón de encendido)

Esto es lo que veo en dmesg:

[191069.614821] init: anacron main process (10271) killed by TERM signal
[191072.943409] PM: Marking nosave pages: [mem 0x0009f000-0x000fffff]
[191072.943415] PM: Marking nosave pages: [mem 0xcfdff000-0xffffffff]
[191072.943960] PM: Basic memory bitmaps created
[191072.943961] PM: Syncing filesystems ... done.
[191073.022827] Freezing user space processes ... (elapsed 0.001 seconds) done.
[191073.024185] PM: Preallocating image memory... done (allocated 605591 pages)
[191076.793570] PM: Allocated 2422364 kbytes in 3.76 seconds (644.24 MB/s)
[191076.793573] Freezing remaining freezable tasks ... (elapsed 0.174 seconds) done.
[191076.968544] Suspending console(s) (use no_console_suspend to debug)
[191076.972184] serial 00:06: disabled
[191076.973326] parport_pc 00:05: disabled
[191077.172545] PM: freeze of devices complete after 203.995 msecs
[191077.172831] PM: late freeze of devices complete after 0.283 msecs
[191077.173250] PM: noirq freeze of devices complete after 0.418 msecs
[191077.173586] ACPI: Preparing to enter system sleep state S4
[191077.173904] PM: Saving platform NVS memory
[191077.173934] Disabling non-boot CPUs ...
[191077.276185] smpboot: CPU 1 is now offline
[191077.277799] smpboot: CPU 2 is now offline
[191077.278538] Broke affinity for irq 20
[191077.380009] smpboot: CPU 3 is now offline
[191077.380377] PM: Creating hibernation image:
[191077.384001] PM: Need to copy 397084 pages
[191077.384001] PM: Normal pages needed: 397084 + 1024, available pages: 634408
[191077.384001] PM: Restoring platform NVS memory
[191077.384001] Enabling non-boot CPUs ...
[191077.384001] smpboot: Booting Node 0 Processor 1 APIC 0x1
[191077.384001] Disabled fast string operations
[191077.393728] CPU1 is up
[191077.393765] smpboot: Booting Node 0 Processor 2 APIC 0x2
[191077.393729] Disabled fast string operations
[191077.407045] CPU2 is up
[191077.407081] smpboot: Booting Node 0 Processor 3 APIC 0x3
[191077.407047] Disabled fast string operations
[191077.420461] CPU3 is up
[191077.423745] ACPI: Waking up from system sleep state S4
[191077.456598] PM: noirq restore of devices complete after 15.130 msecs
[191077.456747] PM: early restore of devices complete after 0.105 msecs

Linux noosphere-work 3.11.0-12-generic # 19-Ubuntu SMP mié 9 de octubre 16:20:46 UTC 2013 x86_64 x86_64 x86_64 GNU / Linux, ubuntu 13.10