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I am using Ubuntu 16.04. I am not really used to Linux. When I started Ubuntu today, there was a message of internal error that caused Nautilus to not launch.

When I use terminal sudo nautilus, 

(nautilus:2694): Gtk-WARNING **: Failed to register client: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.gnome.SessionManager was not provided by any .service files
Segmentation fault (core dumped)

Also, the desktop does not respond to the right mouse button click.

I even do not know how to get more information on the source of error. I tried to remove nautilus and reinstall

sudo apt-get remove --purge nautilus

sudo apt-get install nautilus

It does not solve the problem.
How can I fix this problem?

user2775514
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  • Please post more information. Try running Nautilus from the terminal. Posting screenshots of the problem would also be helpful. – AnotherKiwiGuy Nov 25 '16 at 01:05
  • Possible duplicate? http://askubuntu.com/questions/351950/nautilus-doesnt-work-from-command-or-from-unity – AnotherKiwiGuy Nov 25 '16 at 01:17
  • Thanks @ThatGuy. I followed the steps in the link. However, it did not work. – user2775514 Nov 25 '16 at 02:01
  • Out of curiosity, are you trying to run Nautilus as root? – AnotherKiwiGuy Nov 25 '16 at 02:04
  • If I type 'nautilus', it only gives 'Segmentation fault' with no additional information. Thus I tried 'sudo nautilus' and got some more message. – user2775514 Nov 25 '16 at 02:24
  • Ok, running Nautilus via sudo, would account for the error you're seeing. Try using gksudo instead of sudo – AnotherKiwiGuy Nov 25 '16 at 02:35
  • Try rebooting & see if nautilus is ok. If so it's just something that occasionally happens in 16.04, can also be 'fixed' by killing nautilus in system monitor. Stop using sudo nautilus command, doing so is a bad idea.. – doug Nov 25 '16 at 03:15
  • Thank you for comments. The problem persists. Because I don't know the source of error or how to resolve it , I may have to reinstall ubuntu.(fortunately my all data are in dropbox.). – user2775514 Nov 25 '16 at 04:02

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