Comment 2 for bug 1454253

That is a strange bug. The system only suspends if an external drive is
attached.

Thaddaeus, what needs to work for Xubuntu to suspend correctly?
On May 23, 2015 5:25 PM, "Thaddaeus Tintenfisch" <email address hidden>
wrote:

> You can disable xfce4-power-manager by deactivating its autostart
> launcher (Settings Manager > Session and Startup > Application
> Autostart).
>
> However, this bug seems to be triggered by your hardware. Use journalctl
> to check if there are any related system log messages.
>
> ** Changed in: xfce4-session (Ubuntu)
> Status: New => Incomplete
>
> --
> You received this bug notification because you are a member of Xubuntu
> Bugs Team, which is subscribed to xfce4-session in Ubuntu.
> https://bugs.launchpad.net/bugs/1454253
>
> Title:
> external usb breaks suspend
>
> Status in xfce4-session package in Ubuntu:
> Incomplete
>
> Bug description:
> After booting xubuntu 15.04 it's possible to suspend it the normal way
> BUT - only until you've plugged external usb hard drive. After that
> (even if it was unmounted and removed) it becomes impossible: the
> system goes to suspend briefly (for bout 1 second) but immediately
> wakes up for no apparent reason.
>
> I suspect there's some weird bug in xfce power management - is there a
> way to disable it alltogether and rely on systemd directly instead?
>
> To manage notifications about this bug go to:
>
> https://bugs.launchpad.net/ubuntu/+source/xfce4-session/+bug/1454253/+subscriptions
>