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| -rw-r--r-- | guides/setups/notifications.org | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/guides/setups/notifications.org b/guides/setups/notifications.org new file mode 100644 index 0000000..5d8ee62 --- /dev/null +++ b/guides/setups/notifications.org @@ -0,0 +1,52 @@ +* Fixing dual Plasma/Xfce installations +Plasma and Xfce both define the ~org.freedesktop.Notifications~ D-BUS +service. That leads to all kinds of fun ([[https://bugs.kde.org/show_bug.cgi?id=381693][KDE bug]]; [[https://bugzilla.redhat.com/show_bug.cgi?id=484945][Red Hat bug]]); on my +machine, it causes Plasma sessions to use xfce4-notifyd instead of +Plasma's own notification mechanism. + +[[https://kevinlocke.name/bits/2020/04/12/resolving-desktop-notifications-dbus-service-conflicts/][Kevin Locke]] explains how to solve the issue by defining a third +~org.freedesktop.Notifications~ service in a higher-priority user +directory, which runs a command that will determine the current +desktop environment and start the appropriate notification daemon. In +~~/.local/share/dbus-1/services/org.freedesktop.Notifications.service~: + +#+begin_src conf-desktop +[D-BUS Service] +Name=org.freedesktop.Notifications +Exec=/bin/sh -c "~/.local/lib/meta-notify" +#+end_src + +This gentleman suggests relying on the ~XDG_SESSION_DESKTOP~ variable +to find out which DE is running; unfortunately, for some reason if I +log into Plasma first, then into Xfce, this variable (as well as +~XDG_CURRENT_DESKTOP~ and ~DESKTOP_SESSION~) keeps saying "KDE" when +the script runs. + +(I think this might be caused by Xfce's [[https://gitlab.xfce.org/atomsymbol/xfce4-session/-/blob/xfce4-session-4.14.2/scripts/xinitrc.in.in#L19][xinitrc]] not setting these +variables if they are not empty, but they *are* set when I look at +them in a shell once logged in, so… 🤷) + +Thus my version of ~~/.local/lib/meta-notify~ falls back on the window +managers: + +#+begin_src sh +#!/bin/sh + +wm=$(wmctrl -m | grep '^Name:' | cut -f2- -d' ') + +case ${wm} in + KWin) + exec /usr/bin/plasma_waitforname org.freedesktop.Notifications + ;; + Xfwm4) + exec dbus-send --session \ + --dest=org.freedesktop.systemd1 \ + /org/freedesktop/DBus \ + org.freedesktop.systemd1.Activator.ActivationRequest \ + string:xfce4-notifyd.service + ;; + *) + /usr/bin/logger -t $(basename "$0") Unknown window manager \"${wm}\" + exit 1 +esac +#+end_src |