Re: NM attempts connecting to nonexistent AP

[Robby Workman <robby rlworkman net>]

On Thu, 11 Sep 2014 16:47:45 -0500
Dan Williams <dcbw redhat com> wrote:

> On Wed, 2014-09-10 at 22:53 -0500, Robby Workman wrote:
> > Summary: when resuming from sleep, NM attempts to connect to an AP
> > that no longer exists.  
>
> Hmm, odd.  You could turn on debugging and enable the "wifi_scan" log
> domain to see what's going on at resume time.  NM should be throwing
> away the scan list on resume and requesting a new scan from
> wpa_supplicant, and all that should be reflected in the debug logs
> when the wifi_scan domain is enabled.


I filed this away to debug later, and "later" never arrived :/

However, a user on LQ reported some dbus messages getting rejected on
suspend:

http://www.linuxquestions.org/questions/slackware-14/current-xfce4-power-manager-error-messages-on-suspend-resume-4175562257/#post5468365

I'm seeing those here too:

Dec 22 17:13:54 liberty dbus[1162]: [system] Rejected send message, 4 matched \
  rules; type="method_call", sender=":1.66" (uid=1000 pid=5803 \
  comm="xfce4-power-manager ") interface="org.freedesktop.NetworkManager" \
  member="Sleep" error name="(unset)" requested_reply="0" \
  destination="org.freedesktop.NetworkManager" \
  (uid=0 pid=1198 comm="/usr/sbin/NetworkManager ")
Dec 22 17:16:41 liberty dbus[1162]: [system] Rejected send message, 4 matched \
  rules; type="method_call", sender=":1.66" (uid=1000 pid=5803 \
  comm="xfce4-power-manager ") interface="org.freedesktop.NetworkManager" \
  member="Sleep" error name="(unset)" requested_reply="0" \
  destination="org.freedesktop.NetworkManager" \
  (uid=0 pid=1198 comm="/usr/sbin/NetworkManager ")

I notice that /etc/dbus-1/system.d/org.freedesktop.NetworkManager.conf says
that they are root-only functions:

  <!-- Root-only functions -->
  <deny send_interface="org.freedesktop.NetworkManager" send_member="SetLogging"/>
  <deny send_interface="org.freedesktop.NetworkManager" send_member="Sleep"/>

and if I change it to allow one of my groups, then I no longer get those 
logged Rejected messages.

So... three questions here:

1) is this possibly related to my original problem report? I'm not able to
test it just yet and won't be until I go back to work after the holidays.

2) is xfce4-power-manager supposed to be calling that Sleep here? There is
a configure option to --(en|dis)able-network-manager that is currently
enabled in our build, but if it should be disabled, we can fix that.

3) what is the expectation for that Sleep? What is supposed to call it (or 
is *anything* supposed to be calling it from outside NM)?

-RW