This error is because the dbus system bus is not running on your system. Simply disabling the hook is not the way to go, but we could make the hook have a few more checks.

But that's ma point - why sould I care about dbus? It's not a dependency of pm-utils plus it isn't stated anywhere that I need dbus (probably). Simply by doing 'touch /etc/pm/sleep.d/55-NetworkManager', all of sudden it works. Again - my point - why dbus, why NetworkManager? I don't use them. Ok, the hook can be there, but it shouldn't break pm-utils from working, if one doesn't use them. That's all I wanted to say.

Thanks

As Jan pointed out, a global disable isn't the way to go. It would then force all NetworkManager users to remove the rule which isn't a solution either.

I'm not sure that a downstream patch is the way to go either, especially since the pm-utils developers welcome bug reports about bad hooks: "If a hook is run which you do not like or which you think is not useful or even harmful, we'd appreciate a bugreport for that."

#!/bin/sh
# If we are running NetworkManager, tell it we are going to sleep.
# TODO: Make NetworkManager smarter about how to handle sleep/resume
# If we are asleep for less time than it takes for TCP to reset a
# connection, and we are assigned the same IP on resume, we should
# not break established connections. Apple can do this, and it is
# rather nifty.

. "${PM_FUNCTIONS}"

command_exists dbus-send || exit $NA

suspend_nm()
{
# Tell NetworkManager to shut down networking
dbus-send --system \
--dest=org.freedesktop.NetworkManager \
/org/freedesktop/NetworkManager \
org.freedesktop.NetworkManager.sleep
}

resume_nm()
{
# Wake up NetworkManager and make it do a new connection
dbus-send --system \
--dest=org.freedesktop.NetworkManager \
/org/freedesktop/NetworkManager \
org.freedesktop.NetworkManager.wake
}

case "$1" in
hibernate|suspend)
suspend_nm
;;
thaw|resume)
resume_nm
;;
*) exit $NA
;;
esac

There's missing a check for the networkmanager itself. "command_exists networkmanager || exit $NA" added before the dbus check and all works (maybe it needs to be /etc/rc.d/networkmanager, but I don't care as long as the command isn't present :P).

I checked git version of pm-utils at freedesktop, the same problem is there. I will post a bug report there, so let's close this one...