Bug#780520: systemd-sysv: computer restarts after shutdown if connected to an external display

[Harven]

Package: systemd-sysv
Version: 215-12
Severity: important

Dear Maintainer,

I am using debian jessie with the kde desktop.
When my laptop (HP probook 650) is connected to an external screen,
I can't shutdown properly.  When I halt the computer, either using the menus,
the power button or the halt command, I have the usual shutdown messages,
then everything seems to stop as expected. But after one second, the computer
reboots!
I can only shutdown by keeping the power button pressed long enough so as to
get a power cut.

After some investigation, I found that this behavior appears only
when the laptop is connected to an external screen.
If there is no external display connected or if I first disconnect the external
display
(e.g. removing the vga connector), I can shutdown properly.

This problem appeared after an upgrade (debian jessie) done in january.
The system was previously upgraded in october I think.

In order to solve the problem, I tried removing the pm-utils package. This
didn't help.
I don't have the kexec-tools package installed. I discussed the problem on the
debian forums
and at least one other user is affected by the bug.

Now that I know that I can circumvent the problem by disconnecting the external
screen,
this is less a problem. At first, this was very annoying though. I often walked
from the keyboard
thinking the computer was going to shutdown, only to discover later that it has
rebooted for some
mysterious reason.



-- System Information:
Debian Release: 8.0
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 3.16.0-4-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: unable to detect

Versions of packages systemd-sysv depends on:
ii  systemd  215-12

systemd-sysv recommends no packages.

systemd-sysv suggests no packages.

-- no debconf information