Ubuntu 16.04 hangs on shutdown

Question

I know that there are other questions similar, but I will give more details about the problem.

When I try to shutdown/restart the system hangs forever. This appens on Ubuntu 16.04 64bit. It appens on the same machine on an upgraded Kubuntu (14.04 » 16.04), on a fresh installed Lubuntu 16.04 and event on a live CD (iso booted from hard-disk with grml-rescue).

It appens if I shutdown/restart from the Desktop Enviroment and if I do it from the terminal.

The issue is not appening on an Ubuntu 14.04 installed on the same hard-disk.

fdisk

I've tried to run a fdisk on the partition but no errors were found.

irqpoll

I've tried to add the irqpoll parameter to the system boot

linux /boot/vmlinuz-4.4.0-31-generic root=UUID=c50c612d-813b-4e76-a6d0-92e697658b7a ro irqpoll $vt_handoff

bios usb3

Someone has resolved by turning off usb3 legacy support on the bios, but my motherboard is very old, I have no usb3 support on the bios

systemctl and swap

This answer https://askubuntu.com/a/769953/23130 talked about 2 possible problems: systemctl and swap

sudo swapoff
sudo systemctl reboot

but none of theme work

shutdown debug

the previous answer pointed to an interesting Launchpad discussion https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1464917

where there is an introductive text that says:

If you are experiencing a shutdown hang, please file a separate bug report and follow the debugging instructions described in the "Debugging boot/shutdown problems" section of /usr/share/doc/systemd/README.Debian.gz to check if there are any hanging jobs at shutdown. Capturing a screen photo of "journalctl -b" in the rescue shell might be enlightening.

So the debbuging instructions says to

sudo systemctl enable debug-shell
sudo halt

then when the shutdown hangs you have a console on VT9 CTRL+ALT+F9 where you can do

systemctl

to find units with state active

systemctl list-jobs

all jobs listed are with state waiting, the only one with state running is upower.service which is bold.

So I powered off the PC and started again, now in a terminal I've done

sudo systemctl list-jobs

The output is

JOB UNIT           TYPE  STATE  
1341 upower.service start running
1 jobs listed.

so I tried to turn it off and disable it for the future

sudo systemctl stop upower.service
sudo systemctl disable upower.service
sudo systemctl mask upower.service

I then tried again to shotdown, with the debug console

sudo systemctl enable debug-shell
sudo halt

but the shutdown freezes as usual, plus now I cannot even access the debug-shell.

Booting without the quiet splash grub options I can see that the shutdown hangs on the output line

Reached target Shutdown

These are the syslog lines about the shutdown

Aug  5 11:45:12 pc-dev udisksd[2930]: Mounted /dev/sdc1 at /media/luca/TOSHIBA EXT on behalf of uid 1000
Aug  5 11:45:12 pc-dev ntfs-3g[3141]: Version 2015.3.14AR.1 integrated FUSE 28
Aug  5 11:45:12 pc-dev ntfs-3g[3141]: Mounted /dev/sdc1 (Read-Write, label "TOSHIBA EXT", NTFS 3.1)
Aug  5 11:45:12 pc-dev ntfs-3g[3141]: Cmdline options: rw,nodev,nosuid,uid=1000,gid=1000,uhelper=udisks2
Aug  5 11:45:12 pc-dev ntfs-3g[3141]: Mount options: rw,nodev,nosuid,uhelper=udisks2,allow_other,nonempty,relatime,default_permissions,fsname=/dev/sdc1,blkdev,blksize=4096
Aug  5 11:45:12 pc-dev ntfs-3g[3141]: Global ownership and permissions enforced, configuration type 7
Aug  5 11:45:16 pc-dev com.canonical.indicator.application[2749]: (process:3129): indicator-application-service-WARNING **: Application already exists, re-requesting properties.
Aug  5 11:45:19 pc-dev systemd[1]: Started Daemon for generating UUIDs.
Aug  5 11:45:28 pc-dev spideroak_inotify[3253]: Program started
Aug  5 11:45:36 pc-dev systemd[1]: Starting Stop ureadahead data collection...
Aug  5 11:45:36 pc-dev systemd[1]: Stopped Read required files in advance.
Aug  5 11:45:36 pc-dev systemd[1]: Started Stop ureadahead data collection.
Aug  5 11:45:40 pc-dev systemd[1]: Started Early root shell on /dev/tty9 FOR DEBUGGING ONLY.
Aug  5 11:45:53 pc-dev systemd[1]: Stopped target Sound Card.
Aug  5 11:45:53 pc-dev systemd[1]: Closed Load/Save RF Kill Switch Status /dev/rfkill Watch.
Aug  5 11:45:53 pc-dev systemd[1]: Stopped target Timers.
Aug  5 11:45:53 pc-dev systemd[1]: Stopped Daily apt activities.
Aug  5 11:45:53 pc-dev systemd[1]: Stopped Daily Cleanup of Temporary Directories.
Aug  5 11:45:53 pc-dev systemd[1]: Stopped Stop ureadahead data collection 45s after completed startup.
Aug  5 11:45:53 pc-dev systemd[1]: Stopped target Graphical Interface.
Aug  5 11:45:53 pc-dev org.freedesktop.Notifications[2749]: xfce4-notifyd: Fatal IO error 11 (Risorsa temporaneamente non disponibile) on X server :0.
Aug  5 11:45:53 pc-dev systemd[1]: Stopping Light Display Manager...
Aug  5 11:45:53 pc-dev systemd[1]: Stopping Accounts Service...
Aug  5 11:45:53 pc-dev ntfs-3g[3141]: Unmounting /dev/sdc1 (TOSHIBA EXT)
Aug  5 11:45:53 pc-dev systemd[1]: Stopping Disk Manager...
Aug  5 11:45:53 pc-dev ModemManager[2245]: <info>  Caught signal, shutting down...
Aug  5 11:45:53 pc-dev systemd[1]: Stopping Daemon for power management...
Aug  5 11:45:53 pc-dev systemd[1]: Stopped target System Time Synchronized.
Aug  5 11:45:53 pc-dev dbus[2266]: [system] Activating via systemd: service name='org.freedesktop.PolicyKit1' unit='polkitd.service'
Aug  5 11:45:53 pc-dev systemd[1]: Stopping User Manager for UID 1000...
Aug  5 11:45:53 pc-dev rsyslogd: [origin software="rsyslogd" swVersion="8.16.0" x-pid="2228" x-info="http://www.rsyslog.com"] exiting on signal 15.
Aug  5 11:48:26 pc-dev rsyslogd: [origin software="rsyslogd" swVersion="8.16.0" x-pid="2232" x-info="http://www.rsyslog.com"] start
Aug  5 11:48:26 pc-dev rsyslogd-2222: command 'KLogPermitNonKernelFacility' is currently not permitted - did you already set it via a RainerScript command (v6+ config)? [v8.16.0 try http://www.rsyslog.com/e/2222 ]
Aug  5 11:48:26 pc-dev rsyslogd: rsyslogd's groupid changed to 108
Aug  5 11:48:26 pc-dev rsyslogd: rsyslogd's userid changed to 104
Aug  5 11:48:26 pc-dev loadkeys[764]: Caricamento di /etc/console-setup/cached.kmap.gz
Aug  5 11:48:26 pc-dev systemd[1]: Started Set console keymap.
Aug  5 11:48:26 pc-dev systemd[1]: Started Create Static Device Nodes in /dev.
Aug  5 11:48:26 pc-dev systemd[1]: Starting udev Kernel Device Manager...
Aug  5 11:48:26 pc-dev systemd[1]: Started Uncomplicated firewall.
Aug  5 11:48:26 pc-dev systemd[1]: Started udev Kernel Device Manager.
Aug  5 11:48:26 pc-dev systemd[1]: Starting Remount Root and Kernel File Systems...
Aug  5 11:48:26 pc-dev systemd[1]: Started Remount Root and Kernel File Systems.
Aug  5 11:48:26 pc-dev systemd[1]: Starting Flush Journal to Persistent Storage...
Aug  5 11:48:26 pc-dev systemd[1]: Reached target Local File Systems (Pre).
Aug  5 11:48:26 pc-dev systemd[1]: Reached target Local File Systems.
Aug  5 11:48:26 pc-dev systemd[1]: Starting Tell Plymouth To Write Out Runtime Data...
Aug  5 11:48:26 pc-dev systemd[1]: Starting LSB: AppArmor initialization...
Aug  5 11:48:26 pc-dev systemd[1]: Starting Set console font and keymap...
Aug  5 11:48:26 pc-dev systemd[1]: Starting udev Coldplug all Devices...
Aug  5 11:48:26 pc-dev systemd[1]: Starting Load/Save Random Seed...
Aug  5 11:48:26 pc-dev systemd[1]: Started Tell Plymouth To Write Out Runtime Data.
Aug  5 11:48:26 pc-dev systemd[1]: Started Load/Save Random Seed.
Aug  5 11:48:26 pc-dev systemd[1]: Started Flush Journal to Persistent Storage.
Aug  5 11:48:26 pc-dev systemd[1]: Starting Create Volatile Files and Directories...
Aug  5 11:48:26 pc-dev systemd-tmpfiles[958]: [/usr/lib/tmpfiles.d/var.conf:14] Duplicate line for path "/var/log", ignoring.
Aug  5 11:48:26 pc-dev systemd[1]: Started udev Coldplug all Devices.
Aug  5 11:48:26 pc-dev systemd[1]: Starting Show Plymouth Boot Screen...
Aug  5 11:48:26 pc-dev kernel: [    0.000000] Initializing cgroup subsys cpuset
Aug  5 11:48:26 pc-dev apparmor[943]:  * Starting AppArmor profiles
Aug  5 11:48:26 pc-dev kernel: [    0.000000] Initializing cgroup subsys cpu
Aug  5 11:48:26 pc-dev kernel: [    0.000000] Initializing cgroup subsys cpuacct

This is my lshw output

Can someone help me? To me is unbelievable that such a severe bug affects a LTS.

Solution 1

I think I found the solution. I was searching for a solution for another problem: lsusb command was hanging forever, so I found this post https://ubuntuforums.org/showthread.php?t=2301619

I then remembered that I had a USB3 PCI Card plugged on the mother board but not powered, after removing it the problem is solved.

Hope it helps.

Solution 2

This worked for me, Hope you too.

I have Lubuntu 16.04.1 LTS

STEPS I DID FOR SOLVE

• Press CTRL + ALT and T
• In terminal paste sudo xedit /etc/modprobe.d/blacklist.conf
• Write your user password
• In the bottom of the windows add:

blacklist dw_dmac blacklist dw_dmac_core

• Save and Quit
• I did Follow step, but don't know if is neccesary: In the same terminal add: sudo update-grub
• Reboot once (maybe could keep with issue, force reboot) Thats It. I Did it and the PC now colud PowerOff/Reboot/Suspend and everything.

NOTICE: For this to work you will need to eraser quite splash in the Grub Steps for this:

• Press CTRL + ALT and T (open the terminal)
• Paste this sudo xedit /etc/default/grub
• Write your user password
• In the line: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" eraser quiet splash
• Save and Quit
• In terminal paste sudo update-grub

Notes: This work for ASER E-11 with previous Windows8.1 and now with Lubuntu 16.04.1 LTS.

Cons: In the Start or ShutDown the computer will show only console, but It'll works.

Solution 3

Same problem here on brand new Asus L502S. I tried Mint, Mate, Ubuntu - all the same. Problem is common. I tried everything which can be found regarding this problem over the forums.

Eventually I gave up when I found this: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1594023

Check if you issue is the same and I hope U don't waste another day on this, as I did.

Comments

[dadexix86]

What is your hardware configuration? Are you maybe with and Nvidia card on an Asus Laptop?

[nulll]

It's not an Asus Laptop but yes I have a Nvidia card, can you please tell me a command to get the output to give you a complete answer?

[dadexix86]

Which drivers do you use? Try to start with nomodeset. You can add sudo lshw -sanitize to the question for giving us the full hardware involved.

[nulll]

I've tried to boot with nomodeset but unfortunately it doesn't help. I've attached my lshw on the question

[James Bowery]

Do you have an SSD for your swap partition?

[nulll]

No, unfortunately no SSD here!

[Tamim Addari]

I have Asus laptop and SSD for swap partition, what is the procedure there?

[nulll]

I believe that the problem is related to the kernel 4.x. I have another partition with Ubuntu 14.04, the problem started even here after moving from kernel 3.x to 4.x

[Begui]

having the issue on 19.04

[nulll]

Sorry, I didn't undestand, what in the bug report convinced you to give up?

[NejcT]

Because it is confirmed bug in the OS - I believe it is not solvable by simple tricks as modifying flags of 'GRUB_CMDLINE_LINUX_DEFAULT'. I tried every suggested solution which can be found over the internet and non of those solved problem in my case.

[nulll]

unfortunately is not working for me

[Luigi Lopez]

Do you have Lubuntu?

[nulll]

Doesn't work for me

[David Faure]

What is most interesting to others is: how did you get the idea of blacklisting dw_dmac? Which debugging procedure led you to that kernel module?