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I deleted "quiet splash" from GRUB_CMDLINE_LINUX_DEFAULT in the GRUB config file.

And when I reboot with the command line, I can see the commands until it reaches target reached restarting now

And then.... nothing, it freezes there. So it is not possible to shut down.

It is a dual boot of Win10 with Ubuntu 16.04

I had a similar problem on launch but I fixed it on adding acpi=off after pushing the E key in the GRUB menu.

EDIT

I changed acpi=off to acpi=noirq and this gave me a freeze on restart and when I did force shutdown and restart it gave me a purple screen with nothing. I had to edit again from the GRUB menu to put it back to acpi=off

image

What else can I try?

Zanna
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chicken burger
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4 Answers4

4

This started happening on my Ubuntu machine after I extended the Ubuntu partition size.

The solution is to boot from a Ubuntu live-session (boot your computer on a Ubuntu live-CD or live-USB then choose "Try Ubuntu", it may work on an installed Ubuntu too).

Then:

  1. Make sure you are connected to the Internet

  2. Open a new Terminal, and type the following commands (press Enter after each line):

    sudo add-apt-repository ppa:yannubuntu/boot-repair
sudo apt-get update
sudo apt-get install -y boot-repair && boot-repair

This should repair your GRUB and help the OS shutdown correctly.

prolificslacker
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Robin Singh
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try acpi=noirq

like the answer to this question: acpi power off

Community
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Leder
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Are you using Btrfs?

I had very long shutdowns of tens of minutes after moving my 8 data disks from ext4 to Btrfs. I worked-around it by adding nocache_space to the mount options for my Btrfs mount points in /etc/fstab.

user19649
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I too had been experiencing random freezes after switching from 14LTS to 16LTS. I ran memtest86 and disk check but all passed. Just a couple of days ago out of exasperation I decided to revert from kernel 4.9 to kernel 4.4. Since then I've not had any hanging or freezing. In fact, it also seems to me my laptop runs cooler. Don't know why or any details but so far it is working for me.

Eliah Kagan
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user707269
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