[systemd-devel] mate desktop user service file

[Qu Wenruo]

在 12/04/2014 04:56 PM, arnaud gaboury 写道:
>> mate-settings-daemon might expect to be run from within an X-session.
>> These errors look like DISPLAY= isn't set, which is reasonable because
>> systemd starts programs from a clean environment.
> As mentioned in my post, $DISPLAY is correctly set and is in systemctl
> environment. The command is run inside the X session
>
> After more tests, I realized two variables were missing:
> -$XAUTHORITY
> In an effort to group runtime variables in one place, I set
> XAUTHORITY=/run/user/1000/Xauthority.
> So adding Environment=XAUTHORITY=/run/user/1000/Xauthority solved this issue.
>
> -$DBUS_SESSION_BUS_ADDRESS
> For reasons I ignore (far from being a dbus expert), the
> $DBUS_SESSION_BUS_ADDRESS as returned by the
> $systemctl --user show-environment did not work for mate-settings-daemon.
> Instead, mate is looking for this file to connect to dbus :
> ~/.dbus/session-bus/77f348a2b3fb429b85a5de751ea9175a-0
> (machine.id-display). This file has the following content:
> DBUS_SESSION_BUS_ADDRESS=unix:abstract=/tmp/dbus-jszhQsZmjR,guid=be0e590886758c696ffc70175458d736
> DBUS_SESSION_BUS_PID=8268
> DBUS_SESSION_BUS_WINDOWID=16777217
> So adding EnvironmentFile=%h/.dbus/session-bus/77f348a2b3fb429b85a5de751ea9175a-0
> solved the issue.
>
> I am now with this service file:
>
> ~/.config/systemd/user/mate-settings-daemon.service
>
> ---------------------------------
> [Unit]
> Description=Mate settings daemon
>
> [Service]
> Type=daemon
> Environment=XAUTHORITY=/run/user/1000/Xauthority
> EnvironmentFile=%h/.dbus/session-bus/77f348a2b3fb429b85a5de751ea9175a-0
> ExecStart=/usr/lib/mate-settings-daemon/mate-settings-daemon
>
> [Install]
> WantedBy=wm.target
> ------------------------------------
>
> it works and does what I am expecting (mate-settings are started
> without any mate session being started).
>
> -------------------------------------
> gabx at hortensia ➤➤ ~ % systemctl --user status mate-settings-daemon
> ● mate-settings-daemon.service - Mate settings daemon
>     Loaded: loaded
> (/home/gabx/.config/systemd/user/mate-settings-daemon.service;
> disabled)
>     Active: active (running) since Thu 2014-12-04 09:34:39 CET; 9min ago
>   Main PID: 5664 (mate-settings-d)
>     CGroup: /user.slice/user-1000.slice/user at 1000.service/mate-settings-daemon.service
>             └─5664 /usr/lib/mate-settings-daemon/mate-settings-daemon
> ------------------------------------
>
Just to mention, the default 1.8.1 mate, will autostart 
mate-setting-daemon according to
its file in /etc/xdg/autostart/mate-settings-daemon.desktop:
------
[Desktop Entry]
Type=Application
Name=MATE Settings Daemon
<A lot of i18n names>
Exec=/usr/lib/mate-settings-daemon/mate-settings-daemon
OnlyShowIn=MATE;
X-MATE-Autostart-Phase=Initialization
X-MATE-Autostart-Notify=true
X-MATE-AutoRestart=true
------

So the problem does not involve systemd at all...

Thanks,
Qu
>
>> Anyway, you really should talk to the mate developers to ask them
> It is done, but still waiting for any hint...
>
> Now my new questions:
>
> It seems to me my setting is a dirty hack. I can't understand the
> content of ~/.dbus/session-bus/77f348a2b3fb429b85a5de751ea9175a-0.
>
> -----------------------------
> $ myps dbus
> .....
> 154:gabx      1424     1  0 Nov29 ?        00:00:00 dbus-launch
> --autolaunch=77f348a2b3fb429b85a5de751ea9175a --binary-syntax
> --close-stderr
> .........
> -------------------------------
>
> Why this autolaunch ?
> Why is the DBUS_SESSION_BUS_ADDRESS in this file set to
> /tmp/dbus-jszhQsZmjR,guid=be0e590886758c696ffc70175458d736 when
> $systemctl --user show-environment returns
> DBUS_SESSION_BUS_ADDRESS=/run/user/1000/dbus/user_bus_socket ?
> I am left with two adresses, which sounds to me confusing and weird.
>
> Why is mate-settings-daemon listening to the adress in
> ~/.dbus/session-bus/77f348a2b3fb429b85a5de751ea9175a-0 and not to the
> one provided by systemctl ?
>
>
> Even if my setup works, I would like to understand this story of two
> dbus seesion adresses. Thank you for any explanation to light my
> lantern.
>
>
> Regards.
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