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Accepted
wim
Asked: 2013-11-02 10:08:08 +0800 CST

How to troubleshoot slow shutdown?

  • 772

When I shutdown my computer there is some annoying delay, it takes about 5-10 seconds in 13.10 when in the previous version it was almost instantaneous.

During shutdown I press escape to cancel the splash screen and can see that a big part of the delay is after "Asking all remaining process to terminate...", and then there is "Killing all remaining processes". I have filmed the process with my video camera to check which processes had to be killed, but they didn't chat anything to the terminal.

I previously had this same issue in 11.10, and I resolved it as answered here, however this did not work for me in 13.10.

How to identify the cause of delays in the shutdown process, and fix them?

shutdown

3 Answers

  1. Best Answer

    Turn on reporting for misbehaving applications:

    1. Open /etc/init.d/sendsigs in your favourite text editor, with root privileges (e.g sudo vi /etc/init.d/sendsigs or gksu /etc/init.d/sendsigs). Search for the line #report_unkillable and uncomment it (i.e. remove the # tag). Save the file.

    2. Make sure that apport is enabled: Edit the file /etc/default/apport so it reads enabled=1. (If it was enabled=0 then reboot, so apport can start.)

    3. Shutdown.

    4. Upon the next boot apport should come up with a message telling you that there was some kind of problem with a program. That is the one causing the delay. And there should be a crash report in /var/crash . (If apport doesn't report the name, then just look in the crash file, in the end of the file there will be something like Title: MISBEHAVING_PROGRAMNAME does not terminate at computer shutdown)

    • 18

  2. Is the shutdown always slow or can it vary? If the latter is the case, what did you do before shutting down? Did you do something that took a lot of disk-writes that perhaps need to end first before all processes can be terminated?

    you could save a list of all processes before shutting down as per:

    ps -A > processes.txt

    before you shutdown.

    You could take a look at any errors that might have occurred after restart as per:

    dmesg |tail

    Hope this helps

    Frank

    • -1

  3. Have you tried this? Open terminal and type

    sudo shutdown now

    This might help.

    • -2