I have Ubuntu 14.04.3 32 bit OS. I set my comp to sleep after 5 minutes of idleness. It was running OK until today. I should say that handling of power management is not reliable in Ubuntu. My system is up-to-date.
I also tried it in shell like
sudo pm-suspend
the result is the same, it wakes up immediately.
I let kids use my comp, they might change some settings unintentially?
How can I know what the problem is?
EDIT: Here is output of dmesg relating to power management:
[ 2463.965022] CPU1 is up
[ 2463.966158] ACPI: Waking up from system sleep state S3
[ 2463.971671] uhci_hcd 0000:00:1a.0: System wakeup disabled by ACPI
[ 2463.971713] uhci_hcd 0000:00:1a.1: System wakeup disabled by ACPI
[ 2463.972208] uhci_hcd 0000:00:1d.0: System wakeup disabled by ACPI
[ 2463.972239] uhci_hcd 0000:00:1d.1: System wakeup disabled by ACPI
[ 2463.972284] uhci_hcd 0000:00:1d.2: System wakeup disabled by ACPI
[ 2463.988468] PM: noirq resume of devices complete after 16.985 msecs
[ 2463.988985] PM: early resume of devices complete after 0.487 msecs
[ 2463.992121] usb usb3: root hub lost power or was reset
[ 2463.992175] usb usb4: root hub lost power or was reset
[ 2463.992426] usb usb5: root hub lost power or was reset
[ 2463.992532] usb usb6: root hub lost power or was reset
[ 2463.992582] usb usb7: root hub lost power or was reset
[ 2463.992714] pcieport 0000:00:1c.2: System wakeup disabled by ACPI
[ 2464.027300] sd 2:0:0:0: [sda] Starting disk
[ 2464.133550] rtc_cmos 00:01: System wakeup disabled by ACPI
[ 2464.352083] ata4: SATA link down (SStatus 0 SControl 300)
[ 2464.360273] ata5: SATA link down (SStatus 0 SControl 300)
[ 2464.492085] usb 6-1: reset low-speed USB device number 2 using uhci_hcd
[ 2464.831680] PM: resume of devices complete after 842.689 msecs
[ 2464.832214] PM: Finishing wakeup.
And here is output of cat /proc/acpi/wakeup:
Device S-state Status Sysfs node
UHC1 S3 *enabled pci:0000:00:1d.0
UHC2 S3 *enabled pci:0000:00:1d.1
UHC3 S3 *enabled pci:0000:00:1d.2
UHC4 S3 *enabled pci:0000:00:1a.0
UHC5 S3 *enabled pci:0000:00:1a.1
EHC1 S3 *disabled pci:0000:00:1d.7
EHC2 S3 *disabled pci:0000:00:1a.7
PXS1 S4 *disabled
EXP3 S4 *disabled pci:0000:00:1c.2
EXP5 S4 *disabled
EXP6 S4 *disabled
AZAL S4 *disabled pci:0000:00:1b.0
MODM S4 *disabled
I am currently trying suggestions in this link Ubuntu wakes up after few seconds of sleep
EDIT2: Here is output of /var/log/pm-suspend.log
Mon Aug 24 17:34:15 EEST 2015: performing suspend
/etc/uswsusp.conf: Could not stat configuration file
KMS graphics driver is in use, skipping quirks.
Mon Aug 24 17:34:25 EEST 2015: Awake.
Mon Aug 24 17:34:25 EEST 2015: Running hooks for resume
Running hook /etc/pm/sleep.d/novatel_3g_suspend resume suspend:
/etc/pm/sleep.d/novatel_3g_suspend resume suspend: success.
Running hook /usr/lib/pm-utils/sleep.d/99video resume suspend:
/usr/lib/pm-utils/sleep.d/99video resume suspend: disabled.
Running hook /usr/lib/pm-utils/sleep.d/98video-quirk-db-handler resume suspend:
/usr/lib/pm-utils/sleep.d/98video-quirk-db-handler resume suspend: success.
Running hook /usr/lib/pm-utils/sleep.d/95led resume suspend:
/usr/lib/pm-utils/sleep.d/95led resume suspend: not applicable.
Running hook /usr/lib/pm-utils/sleep.d/95hdparm-apm resume suspend:
/dev/sda:
setting Advanced Power Management level to 0xfe (254)
APM_level = 254
/usr/lib/pm-utils/sleep.d/95hdparm-apm resume suspend: success.
Running hook /usr/lib/pm-utils/sleep.d/95anacron resume suspend:
/usr/lib/pm-utils/sleep.d/95anacron resume suspend: success.
Running hook /usr/lib/pm-utils/sleep.d/94cpufreq resume suspend:
/usr/lib/pm-utils/sleep.d/94cpufreq resume suspend: success.
Running hook /usr/lib/pm-utils/sleep.d/90clock resume suspend:
/usr/lib/pm-utils/sleep.d/90clock resume suspend: not applicable.
Running hook /usr/lib/pm-utils/sleep.d/75modules resume suspend:
Reloaded unloaded modules.
/usr/lib/pm-utils/sleep.d/75modules resume suspend: success.
Running hook /usr/lib/pm-utils/sleep.d/60_wpa_supplicant resume suspend:
Selected interface 'wlan0'
OK
/usr/lib/pm-utils/sleep.d/60_wpa_supplicant resume suspend: success.
Running hook /usr/lib/pm-utils/sleep.d/55wicd resume suspend:
Unable to connect to wicd daemon - is it running?
/usr/lib/pm-utils/sleep.d/55wicd resume suspend: disabled.
Running hook /usr/lib/pm-utils/sleep.d/50unload_alx resume suspend:
/usr/lib/pm-utils/sleep.d/50unload_alx resume suspend: success.
Running hook /etc/pm/sleep.d/20_custom-ehci_hcd resume suspend:
/etc/pm/sleep.d/20_custom-ehci_hcd resume suspend: success.
Running hook /etc/pm/sleep.d/10_unattended-upgrades-hibernate resume suspend:
/etc/pm/sleep.d/10_unattended-upgrades-hibernate resume suspend: success.
Running hook /etc/pm/sleep.d/10_grub-common resume suspend:
/etc/pm/sleep.d/10_grub-common resume suspend: success.
Running hook /usr/lib/pm-utils/sleep.d/00powersave resume suspend:
/usr/lib/pm-utils/sleep.d/00powersave resume suspend: success.
Running hook /usr/lib/pm-utils/sleep.d/00logging resume suspend:
/usr/lib/pm-utils/sleep.d/00logging resume suspend: success.
Running hook /etc/pm/sleep.d/00CPU resume suspend:
/etc/pm/sleep.d/00CPU resume suspend: not executable.
Running hook /usr/lib/pm-utils/sleep.d/000record-status resume suspend:
/usr/lib/pm-utils/sleep.d/000record-status resume suspend: success.
Running hook /usr/lib/pm-utils/sleep.d/000kernel-change resume suspend:
/usr/lib/pm-utils/sleep.d/000kernel-change resume suspend: success.
Mon Aug 24 17:34:25 EEST 2015: Finished.
/var/log/pm-suspend.logto see if there's anything that could be interrupting sleep. Also paste the contents into your question so we can see. – TheWanderer Aug 24 '15 at 14:42Thank you for the tip, I posted last part of the log file. I did played settings of
/proc/acpi/wakeupin the past but it was OK until today. – kenn Aug 24 '15 at 14:57uswsusp, that I think it's long deprecated...?) – Rmano Aug 24 '15 at 14:58/etc/uswsusp.conffile. It's probably corrupt, which means runningsudo dpkg-reconfigure uswsuspmight work. I don't know whether it's a package name or not. – TheWanderer Aug 24 '15 at 15:01suspendI typed in synapticacpi, acpi-support, acpitool, hibernate, pm-utils, powernap, qshutdown, upower, uswsusp– kenn Aug 24 '15 at 15:06acpi-supportandupowerinstalled of your list (I think I havepm-utilsin the laptop, will check when I can). Unfortunately, going back after manual install of conflicting packages is not straightforward (sometime not even possible), so it can be messy... – Rmano Aug 24 '15 at 15:11