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cinan

Member

From: Slovakia

Registered: 2008-07-04

Posts: 251

Website

Cannot connect to D-Bus

Hello,
I've just found no application can connect to the session bus. If I open qdbusviewer-qt4 I can see this message: "Error: Cannot connect to D-Bus: Failed to connect to socket /tmp/dbus-8gNhrUNKWG: Connection refused". System bus is working OK.
The socket file " /tmp/dbus-8gNhrUNKWG" doesn't exist. I thought dbus session should be started by KDM (I use KDE 4.10).

Heres's a `ps aux | grep dbus' output:

dbus       374  0.0  0.0  18304  2232 ?        Ss   May27   0:06 /usr/bin/dbus-daemon --system --address=systemd: --nofork --nopidfile --systemd-activation
cinan    28673  0.0  0.0  17324   428 ?        Ss   19:44   0:00 /usr/bin/dbus-daemon --fork --print-pid 4 --print-address 6 --session
cinan    29489  0.0  0.0  15908   624 ?        S    19:53   0:00 dbus-launch --sh-syntax --exit-with-session
cinan    29490  0.0  0.0  18564  1988 ?        Ss   19:53   0:00 /usr/bin/dbus-daemon --fork --print-pid 4 --print-address 6 --session

Am I missing configuration files or something? Thanks for help. (I'm not using testing repo.)

Last edited by cinan (2013-05-28 18:05:22)

karol

Archivist

Registered: 2009-05-06

Posts: 25,440

Re: Cannot connect to D-Bus

Are you using systemd? Waht's the output of

cat /proc/1/comm

cinan

Member

From: Slovakia

Registered: 2008-07-04

Posts: 251

Website

Re: Cannot connect to D-Bus

Yes I use systemd.

cfr

Member

From: Cymru

Registered: 2011-11-27

Posts: 7,148

Re: Cannot connect to D-Bus

When I first do ps ax | grep dbus, I get no results. After opening and closing qdbusviewer-qt4, I get similar output. However, it says it can connect to dbus.

$ ps ax | grep dbus
  932 ?        Ss     0:57 /usr/bin/dbus-daemon --system --address=systemd: --nofork --nopidfile --systemd-activation
 1983 ?        S      0:00 dbus-launch --sh-syntax --exit-with-session
 1984 ?        Ss     0:00 /usr/bin/dbus-daemon --fork --print-pid 5 --print-address 7 --session
 1997 ?        S      0:00 dbus-launch --sh-syntax --exit-with-session
 1998 ?        Ss     0:01 /usr/bin/dbus-daemon --fork --print-pid 5 --print-address 7 --session

I have no files of the sort you expect in /tmp. Do you have files under ~/.dbus/? What about /run/dbus/?

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cinan

Member

From: Slovakia

Registered: 2008-07-04

Posts: 251

Website

Re: Cannot connect to D-Bus

I think I've figured out when dbus starts failing. After reboot I've fired qdbusviewer-qt4 -- everything's ok, dbus is connected, etc. Then I've logged out and logged and in after this I have these problems. It may be a bug in KDM.

Last edited by cinan (2013-05-30 08:45:12)