Slow shutdown on Ubuntu 16.04 LTS (Stopping thermal daemon/running fit make remote CUPS printers)

I found that the daemon responsible for the CUPS remote printers is the cups-browsed service.

When shutting down, it has a time out of 1m 30s. Stopping this service causes the shutdown process to take only few seconds.

I disabled it using this command line on Ubuntu GNOME 16.04:

sudo systemctl disable cups-browsed.service

And my shutdown process ends in a few seconds.

I got the idea from this Ask Ubuntu answer

If you depend on network printers, you could simply make systemd a bit more aggressive in stopping the process. By default, it waits up to 1m30s before forcefully shutting things down, but you can just do

$ sudo systemctl edit cups-browsed.service 

and enter

[Service]
TimeoutStopSec=10

to set the timeout down to 10. Then a

$ sudo systemctl daemon-reload 

should make it take effect (or restart your computer).

This works great for me at least.

EDIT: According to Xiaodong Qi's answer, cups-filters 1.11.4 has a fix for this, so upgrading past 17.04 Zesty (which has cups-filters 1.13.4) should be the simplest fix, though as commenters point out this workaround may still be needed :(

I have got the same Problem. It occurred after clean install Ubuntu 16.04. Finally I figured out, after lots of troubleshooting, that (after disable the Ubuntu boot splash screen) a certain stop-job was running that made the shutdown slow. (Thanks to Alex!) Then I got this error report:

a stop job is running for make remote cups printers available locally

Then I tried this:

sudo systemctl stop cups-browsed.service
sudo systemctl disable cups-browsed.service

To verify:

sudo systemctl status cups-browsed
sudo systemctl is-enabled cups-browsed

and it finally worked! Shutdown was now as good and fast as ever. (You can find this troubleshooting on: "The Annoying Cups Browsed" at the ec-cwang´s Blog!)

This might be important for those this solution is not helpful: How to find out your running stop jobs, just look up: "How do I disable the boot splash screen" on Ask Ubuntu. Then, if you start Ubuntu you get the typical Linux running command signs. If you shut Ubuntu down, mention the output. It shows you at the end what kind of stop job slows down your shutdown procedure.

I had a similar problem. After checking everything, I found out that if uncheck "enable wireless" (right button on wifi icon), and restart, it takes 5 seconds. If i leave wireless active shutdown takes about 1 minute.

I have a USB wifi adapter TP-LINK. Hope it helps you.

Almost identical problem after clean update from 15.10. I have finetuned different programs/properties including made an attemmpt installing my wifi cup printer. Most seems to work, but shutdown takes more then 3 minutes. Pressing f12 shows end endless textloop: OK Start showing plymouth reboot screen OK Stopped thermal daemon service. Can I somehow get a log of the shutdown proces? 2: SOLVED. After installing the printer correctly everything works.

I experienced a similar issue. Turned out to be caused by Private Internet Access client. I had enabled "Start application at login". After disabling this feature, shutdown is almost instant.

Up until now, this bug should be fixed upon the recent release of the CUPS-filters (v1.11.4+) package related to two issues of CUPS--this one and this one. It requires to install CUPS-filters version 1.11.4-1 or above according to this discussion. However, it requires CUPS version 2.2.0+, and in fact the working CUPS-filters and CUPS-core versions haven't been released in the Ubuntu 16.04 repository so far. If you are still having this issue, you might want to try downloading the corresponding CUPS-filters and its dependencies (including libcups2, cups-ipp-utils and others) from the Zesty's repository (for example, with this version) and install the downloaded deb packages using the dpkg command like:

 sudo dpkg -i ~/Downloads/libcups2_2.2.2-1ubuntu1_amd64.deb 
 sudo dpkg -i ~/Downloads/cups-ipp-utils_2.2.2-1ubuntu1_amd64.deb 
 sudo dpkg -i ~/Downloads/cups-filters-core-drivers_1.13.4-1ubuntu1_amd64.deb 
 sudo dpkg -i ~/Downloads/libcupsfilters1_1.13.4-1ubuntu1_amd64.deb 
 sudo dpkg -i ~/Downloads/cups-filters_1.13.4-1ubuntu1_amd64.deb 

I am only giving command lines as a template for you to install the dependencies and the CUPS-filters deb packages. Feel free to download the package from elsewhere with a different version (has to be ~>1.11.4 for CUPS-filters). You may find you would need to install a lot of other dependencies and fix the incompatibility problems with the corresponding i386 and amd64 versions of those packages in your case. You should download packages with the same version number for all dependent packages. For instance, all cups related packages as linked should be chosen to have the same version number 2.2.2-1ubuntu1 or otherwise. Then those related binary packages should be downloaded from the Binary Packages section from the same page. If you find there are two package which cannot be configured simultaneously, don't worry and you should be able to configure them automatically using sudo apt update && sudo apt upgrade after you install all other packages.

Alternatively, you can temporarily change your update source list to Zesty (Ubuntu 17.04) or most recent distribute and then install required CUPS packages using sudo apt update && sudo apt install PACKAGE where you should replace the keyword PACKAGE for the name of packages you want to upgrade to the latest version. Don't forget to change the source list back after this partial upgrade. But this method may make you break other things if you are not doing it correctly.

This is how I fixed this problem on my Ubuntu 16.04. YMMV.

PS:

1. If your printing jobs cannot be stopped, you can use cancel -a to cancel all printing jobs.

2. If you still encounter this issue after the last fix on Ubuntu, please report this bug here directly to developers. They will look into this issue more closely.