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I do not know why my new Ubuntu 16.04 64-bit cannot be shut down or restart. I have to press and hold the power button to turn off.

I did some googling but I didn't find anything to help. Here is a list of files in /var/crash:

ali@persian:~$ ls /var/crash/ -l
total 45752
-rw-r----- 1 ali      whoopsie 23795861 Jul 17 11:56 _usr_bin_nautilus.1000.crash
-rw-rw-r-- 1 ali      whoopsie        0 Jul 17 11:56 _usr_bin_nautilus.1000.upload
-rw------- 1 whoopsie whoopsie        0 Jul 21 19:33 _usr_bin_nautilus.1000.uploaded
-rw-r----- 1 ali      whoopsie 17373280 Jul 15 22:24 _usr_lib_mysql-workbench_mysql-workbench-bin.1000.crash
-rw-r----- 1 root     whoopsie  5673893 Jul 17 09:35 _usr_sbin_apache2.0.crash
-rw-r--r-- 1 root     whoopsie        0 Jul 17 09:35 _usr_sbin_apache2.0.upload
-rw------- 1 whoopsie whoopsie        0 Jul 17 09:36 _usr_sbin_apache2.0.uploaded

--edit

after update && upgrade, the problem is retain and did not solve.

2 Answers 2

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Does this happen after suspend? If yes, in terminal run

$ ps aux | grep suspend

If you see a hanging suspend job, it is preventing shutdown.Kill it with

$ sudo kill -9 NNNN

(Fill in job number from ps output)

This never happened to me till 16.04, now happens often!

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  • no not after suspend, after while restarting or shutting down Jul 30, 2016 at 18:35
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Finally I used sudo shutdown -rF.

Its about 3 days that I have no problem with shutdown or restart.

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