I'm using ubuntu 14.04 and I'm not able to shut down or reboot my laptop. After pressing the reboot/shutdown button it just shows the purple screen & 5 dots. I'm not able to understand where the problem is.
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So can you turn it on? – Tim Jul 02 '14 at 18:12
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yeah there is no issue in turning on the system – user299731 Jul 02 '14 at 18:14
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1What do you get when you execute `sudo poweroff` and `sudo reboot` on a terminal? – jobin Jul 02 '14 at 18:18
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Or `sudo shutdown -P now` – Tim Jul 02 '14 at 18:19
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i didn't try that, i'm trying to shutdown or reboot from the gui – user299731 Jul 02 '14 at 18:20
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after executing sudo poweroff the same problem is persisting – user299731 Jul 02 '14 at 18:24
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What about my suggestion, `sudo shutdown -P now`? – Tim Jul 02 '14 at 19:09
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i tried it.this also didnt work, same problem is happening – user299731 Jul 02 '14 at 19:19
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So how do you shut it down? – Tim Jul 02 '14 at 19:24
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i'm hibernating it – user299731 Jul 02 '14 at 19:25
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[Try this solution][1] if you have the Plank dock installed. [1]: http://askubuntu.com/questions/558975/ubuntu-hanging-on-shutdown-reboot/562747#562747 – Gabriel Pinho Dec 18 '14 at 04:13
3 Answers
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Does any of the below work?
sudo shutdown -r now
sudo shutdown -H now
sudo shutdown -P now
sudo shutdown -rv now
will verbose you while trying a reboot.
Goksu
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try this one 1st reset unity & ubuntu desktop
$ sudo apt-get update
$ sudo apt-get install --reinstall ubuntu-desktop
$ sudo apt-get install unity
$ setsid unity
if this didnt work
$ gksu "gedit /etc/default/grub"
change this line
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
by this
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi=off"
save then update grub by typ
$ sudo grub-update
hwez
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upgrade it again $ sudo apt-get update && sudo apt-get dist-upgrade && sudo shutdown -r – hwez Jul 02 '14 at 19:31
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I had the same problem on Ubuntu 14.04.2 LTS, and finally after many, many hours of searching and experimenting I think I have a solution at least for the class of netbooks/laptops supporting UEFI boot mode (my laptop is ACER TravelMate B115):
In BIOS, under Boot, change Boot Mode to UEFI (after installing Ubuntu in Legacy mode).
This solution does not not require changing grub configuration file /etc/default/grub (by adding ACPI=off and/or ACPI=force to GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"), which was questionable in 1st place anyway.
In my investigation I tried:
- installing Ubuntu 14.04.2 LTS from scratch
- updating Ubuntu to use latest
- changing grub parameters
- upgrading to Ubuntu 15.04
- upgrading BIOS to the latest for TravelMate B115 (V122 to V126)
- analysing the syslog
