[Bug 987220] Re: System does not power off reliably when "Shut Down" chosen from GUI

[Lucy O'Neill]

Hi again, just by accident found on some foreign ubuntu forum solution that might be checked out; i have to leave right now so cannot play with it - but if someone wants, feel free to try.
They say it's acpi issue and it has to be switched on in GRUB
GRUB_CMDLINE_LINUX="acpi=on"

sudo update-grub

they maintain that it works on Dell laptops

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https://bugs.launchpad.net/bugs/987220

Title:
  System does not power off reliably when "Shut Down" chosen from GUI

Status in The Session Menu:
  Incomplete
Status in “gnome-session” package in Ubuntu:
  Invalid
Status in “indicator-session” package in Ubuntu:
  Invalid
Status in “linux” package in Ubuntu:
  Confirmed
Status in “upstart” package in Ubuntu:
  Invalid
Status in “gnome-session” source package in Precise:
  Invalid
Status in “indicator-session” source package in Precise:
  Invalid
Status in “linux” source package in Precise:
  Confirmed
Status in “upstart” source package in Precise:
  Invalid

Bug description:
  Shutting down the computer using the menue does not work always correct. It often does not complete turn off the computer. The power LED and the LED of the bluetooth unit remain on. Also the fan is still running and won't stop. 
  Shutting down the computer with "sudo shutdown -h now" using the terminal works fine.

  I am using a Dell Inspiron 1720.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: indicator-session 0.3.96-0ubuntu1
  ProcVersionSignature: Ubuntu 3.2.0-23.36-generic 3.2.14
  Uname: Linux 3.2.0-23-generic i686
  NonfreeKernelModules: nvidia
  ApportVersion: 2.0.1-0ubuntu5
  Architecture: i386
  Date: Mon Apr 23 12:26:10 2012
  ExecutablePath: /usr/lib/indicator-session/gtk-logout-helper
  InstallationMedia: Kubuntu 10.04.1 LTS "Lucid Lynx" - Release i386 (20100816.2)
  ProcEnviron:
   SHELL=/bin/bash
   PATH=(custom, no user)
   LANG=de_DE.UTF-8
  SourcePackage: indicator-session
  UpgradeStatus: Upgraded to precise on 2012-04-21 (1 days ago)
  --- 
  ApportVersion: 2.0.1-0ubuntu7
  Architecture: i386
  DistroRelease: Ubuntu 12.04
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release i386 (20120423)
  NonfreeKernelModules: nvidia
  Package: upstart
  PackageArchitecture: all
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=de_DE.UTF-8
   SHELL=/bin/bash
  ProcVersionSignature: Ubuntu 3.2.0-24.37-generic-pae 3.2.14
  Tags:  precise
  Uname: Linux 3.2.0-24-generic-pae i686
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

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