I have faced with this error with two programs on a newly installed Ubuntu 18.04.

I get the following error message when I run "lifeograph" after instaling it using Software Center or Synaptic.

lifeograph: error while loading shared libraries: libatkmm-1.6.so.1: cannot open shared object file: No such file or directory

I get the same error "while loading shared libraries" with another program, "keepassxc":

keepassxc: error while loading shared libraries: libQt5Network.so.5: cannot open shared object file: No such file or directory

I tried to run the following command but it did not help:

sudo /sbin/ldconfig -v

Ubuntu 18.04 is a LTS release. Above mentioned programs are from official repositories. Getting such errors on a a freshly installed LTS system is surprising.

Do you have any suggestions?

  • After the initial install, did you ever update the package database? The package installer should have brought in all dependencies, or fail.
    – ubfan1
    Jul 17, 2018 at 19:34
  • @ubfan1 Yes, I did. It seems they are installed without any dependency problem, but they don't run.
    – Luke
    Jul 17, 2018 at 21:40

1 Answer 1


Checking my system, I see multiple copies of that library buried under /snap/gnome-system-monitor/... so of course the loader cannot find them. Either add a link yourself to the /usr/lib/x86_64-linux-gnu location pointing to one of these installed /snap locations, or add one of the /snap... locations to the LD_LIBRARY_PATH. Maybe your package manager defaults to offering snap packages when available -- try changing that default. You can explicitly use apt-get in a terminal:
Crtl+ Alt+t then

sudo apt-get install libatkmm-1.6-1v5

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