I have the same problem on 6 notebooks in my recent installation of ubuntu 12.04 desktop (either amd64 or i386).
Three are mine: Toshiba L640 (i3 box with amd/ati video chip, amd64) acer aoa150 (netbook) acer aod150 (netbook too) Three are on my 3 students: asus (netbook) asus UX31E (i5, new slim notebook, amd64) acer MS2346 (i5, new slim notebook, amd64) Because we seldom (it does succeed sometimes) succeed to shutdown from system menu, now we all rely on <alt-f2> sudo poweroff, which is sure to turn off it. p.s. If it fails to finish, it will stay at a high level of power consumption, e.g. My toshiba L640, it will go from 22W to 35W Asus UX31E, it will go from 17W to 29W. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-session in Ubuntu. 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 To manage notifications about this bug go to: https://bugs.launchpad.net/indicator-session/+bug/987220/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp