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I have dual boot Windows 10 and Ubuntu 14.04.5 LTS in two partitions in a ssd.

Everything works fine, GRUB appears and I can decide which OS to boot.

However, I have an error when shut downing Ubuntu. It proceeds to shut down the laptop, but it freezes in the shutdown screen. And finally being forced to shut it down the hard way.

I have tried some options like the nomodeset or the acpi force in the /etc/default/grub file. Nevertheless it doesn't shut down.

What more can I try to solve it?

Edit:

I have this output. It freezes in # Will now halt, but it doesn't.

Sys log

Sorry for bad quality.

Santiago Gil
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  • Consult the system logs and post any errors here. Also, how long did you let your computer sit before it shut down? – negusp Sep 26 '16 at 12:54
  • @patrickyi I have added a picture, is this what you asked? Also, the computer doesn't shut down, I must do it by force (by presssing shutdown button). – Santiago Gil Sep 26 '16 at 13:31
  • looks like linux doesn't know about the ACPI magic required for your laptop , at least not in the kernel you are running. Maybe try a newer kernel to see if that helps. – Amias Sep 26 '16 at 13:38
  • @Amias I have 4.4.0-38-generic kernel version. I think this problem has a faster solution, but if no solution is received, I will try what you suggest. – Santiago Gil Sep 26 '16 at 14:21
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    that laptop has a very new chipset that around a year old so looks to be very much in the latest kernels only territory. It also seems to have a some extra gaming specific power management that might well not be supported by linux yet. – Amias Sep 26 '16 at 15:46

2 Answers2

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I have been experiencing the same incomplete shutdown:

Will now halt
reboot: System halted

After trying all sorts of suggestions, I have commented out the following line in /etc/default/grub, run update-grub and everything returned back to normality:

GRUB_CMDLINE_LINUX="acpi=off noapic nolapic nomodeset"

I have no idea how and why it has surfaced there in the first place though.

David Foerster
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equatux
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Add the command acpi=off to your grub boot. That may or may not work.

As an FYI, this is an acpi error- the "Will now halt", and then the corresponding freeze, means that your computer has completely shut off the CPU and other components. You can safely shut the power down- holding the power button shouldn't result in power loss.

TL;DR- It's perfectly fine to shut down the computer by holding the power button

Also, consider upgrading to 16.04.

negusp
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  • I changed line GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" for GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi=off" and then update-grub. But the same happens, it doesn't shut down. Although it is nice to shut down the laptop by holding the power button, I'd like not to do it. Also I couldn't install 16.04 because Skylake compatibility problems, so I should maintain in 14.04, at least for now. – Santiago Gil Sep 26 '16 at 13:53
  • Do you have the sleep state issue under 16.04? 16.04 has better support for Skylake than 14.04. I managed to fix it on a laptop I have running an i5-6200u, and I get to C7. – negusp Sep 26 '16 at 14:32
  • No I havn't it. Yes I know, but it was impossible to install it, and I only could install 14.04.5 (enough for me). – Santiago Gil Sep 26 '16 at 14:39
  • See this thread for your device: http://askubuntu.com/questions/772977/not-able-to-install-ubuntu-on-msi-pe-70-6qe – negusp Sep 26 '16 at 14:39
  • It also freezed during the installation. I also tried many bios options and kernel parameters, but nothing worked. In the end I could manage to install 14.04.5, helped by this community in this question. – Santiago Gil Sep 26 '16 at 14:44
  • Well, expect compatibility and issues when using an older version of Ubuntu. I would also upgrade your kernel to 4.7, if possible. – negusp Sep 26 '16 at 14:50