dbus-daemon is being executed twice at the same time

slac · 12-30-2021, 01:15 AM

I have a problem which is that dbus-daemon is being executed two times at the same time when I get into a xorg-session. That is a problem because programs that are looking up for services cannot used them since, I guess, they get confused about which dbus-daemon is the only that they should used.

This is the output of "ps aux":

Code:

user      362  0.0  0.0   4840  2060 tty1     S    01:08   0:00 dbus-launch --sh-syntax --exit-with-x11 startfluxbox
user      367  0.0  0.0   4840  2028 tty1     S    01:08   0:00 dbus-launch --autolaunch=9aaa8a87cd19540448dadf8a61ba58fa --binary-syntax --close-stderr
user      368  0.0  0.0   3380   184 ?        Ss   01:08   0:00 /usr/bin/dbus-daemon --syslog --fork --print-pid 5 --print-address 7 --session
user      369  0.0  0.0   3488  2144 ?        Ss   01:08   0:00 /usr/bin/dbus-daemon --syslog-only --fork --print-pid 5 --print-address 7 --session
user      418  0.0  0.0   3380  2660 ?        S    01:08   0:00 /usr/bin/dbus-daemon --config-file=/usr/share/defaults/at-spi2/accessibility.conf --nofork --print-address 3
user      495  0.0  0.0   5856  2088 pts/0    S+   01:08   0:00 grep dbus

As you can see there, there are two dbus-daemon, one with a flash of --syslog and other one with --syslog-only.

If I kill the xorg session and re-start it then the problem no longer appears. It seems like this only happens when for the very first time xorg (xinitrc) is execute after powering up or rebooting.

What could be the cause of that...? It may be a program that wants to use a dbus service from xinitrc but it does not explain why it only happens once (after rebooting or powering up) and no longer happens when xorg is re-started (the same programs are supposed to be executed).

smallpond · 12-30-2021, 11:34 AM

What problem is this causing? The dbus-daemon man page says you can have one system and multiple session daemons running with additional conf files.

https://dbus.freedesktop.org/doc/dbus-daemon.1.html

slac · 12-30-2021, 04:04 PM

But the problem persists, and I suppose that that was the problem because, as I said earlier, whenever I close the xorg session where the programs that are looking for dbus services do not work and then re-open a xorg session they work because there are no two dbus-daemons running, only one. Two dbus-daemon run ONLY after powering up or rebooting.

The service that a program is looking for is xorg.freedesktop.secrets.service. I removed the --start flag from the Exec=/usr/bin/gnome-keyring-daemon --start --foreground --components=secrets to see what was happening. I found that two gnome-keyring daemons were being executed, probably because there are two dbus-daemons trying to execute the service so the first or the second (I do not know really) gnome-keyring daemon is "overlapping" the other causing programs, which require the daemon, to not be able to use gnome keyrings.

I wonder if recompiling dbus was the reason for it, should I also recompile at-spi2-core, at-spi2-atk and atk?

Also if I remove dbus-launch from .xinitrc the programs can access gnome keyrings properly. Even if there is no DBUS_SESSION_BUS_ADDRESS.

I think that the directory /run/dbus does no exist. Should I execute dbus-daemon --system before any dbus-daemon --session?