Slow shutdowns on occasion

[fixit7]

Usually my shutdowns are 2 to 3 seconds. Sometimes it takes 30 to 45 seconds. Any way to find the reason?

I use shutdown -h now.

Would poweroff be quicker?

[Bill_MI]

I fought with some shutdown problems in VMs and used this post on how to get systemd shutdown logging. I don't know if it applies in 18.04.

Shutdown delayed?

This is a service problem. Some service is halting the shutdown process. And until we know which one, there is nothing to do but speculate. So, how to start solving it? We can start by trying to identify the service. After you experienced one of those prolonged boot situations, be patient. When it finally shuts down, boot normally and then type on a terminal: $ journalctl -rb -1 The above command will display the logs of the last boot in reverse order (with newer entries at the top). Paste th…

@marfig was an excellent resource for many systemd issues and is greatly missed. He left with health problems last summer but I haven't heard. Anyone?

[fixit7]

Thanks. I am using 16.04.

[jaybo]

I notice the delayed shut downs after installing and/or removing USB drives after the initial boot.

[fixit7]

@Bill_MI

I fought with some shutdown problems in VMs and used this post on how to get systemd shutdown logging. I don't know if it applies in 18.04.

I fought with some shutdown problems in VMs and used this post on how to get systemd shutdown logging. I don't know if it applies in 18.04.

I ran

   journalctl -rb -1

and got this.

    Specifying boot ID has no effect, no persistent journal was found

[Bill_MI]

Same problem I had. Check the next posts in that thread, you need the directory:

sudo mkdir /var/log/journal

[Apollonius]

My guess is that before shutdown the system, apart from stopping the running services, checks for update and applies them. I found out that if I disconnect my Ethernet cable or just disconnect using the NM from within the system, shutdown is almost always consistently faster.

[heathrobinson]

That rings true. If it is slow to shutdown and I press Esc to see where it is up to, it’s invariably some network issue - at least so far. Obviously it could just be my network even thought it is a simple set up.

Heathrobinson.

[fixit7]

@Bill_MI

/var/log/journal

Made the directory /var/log/journal.

Will post the results of

   journalctl -rb -1

the next time a slow shutdown occurs.

[fixit7]

Here are results after a long shutdown.

https://www.dropbox.com/s/7bva2e9cttr6j4f/shutdown.txt?dl=0

[fey42]

I have 18.04 running on a dual core and have noticed the same problem.
Here is the prime offender:

After that times out, it takes about 5 seconds for the system to drop.
I have also seen that message repeat 7 or 8 times before it times out and then shuts down.

[fixit7]

I have not had the problem in over a month.

Maybe some self-healing occured.

?

[Gperete]

shutdown from the Indicator Applet button takes almost a minute for me. my fix for this is calling "shutdown -h now" from a keyboard shortcut. so far so good.

sorry for reviving the topic, new to linux (from windows 7)