Long pause before power off / reboot

[user2304]

System: Kubuntu 14.04.2
Kernel: 3.16.0-30-generic / 3.16.0-34-generic (after update)

Symptoms on a netbook Medion E1231T

- On battery - Kubuntu pauses 30 seconds after the message "Will now halt" or prior to rebooting the system without further messages

- but powers off immediately after Hibernate (Suspend to disk)

- On AC - Netbook staas powered on after the message "Will now halt" or prior to rebooting the system without further messages or after suspending
- Only a hard reset (Power button pressed fpr 5 seconds or so) will power down the netbook

Expected behaviour:

- Kubuntu powers off immediately after shutdown / reboots immediately.

Kind regards,

user2304.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.16.0-34-generic 3.16.0-34.47~14.04.1
ProcVersionSignature: Ubuntu 3.16.0-34.47~14.04.1-generic 3.16.7-ckt8
Uname: Linux 3.16.0-34-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.10
Architecture: amd64
CurrentDesktop: KDE
Date: Tue Apr 28 14:15:30 2015
InstallationDate: Installed on 2015-04-27 (1 days ago)
InstallationMedia: Kubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150219.1)
SourcePackage: linux-lts-utopic
UpgradeStatus: No upgrade log present (probably fresh install)

[penalvch (penalvch)]

user2304, thank you for reporting this and helping make Ubuntu better. Could you please execute the following command, as it will automatically gather debugging information, in a terminal:
apport-collect 1449535

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]