It seems that with the recent libxfce4ui commits, this part is now required:
xfce4-screensaver.SlackBuild
Code:
...
# Don't ship autostart file. This will start without it.
rm -f $PKG/etc/xdg/autostart/xfce4-screensaver.desktop
rmdir $PKG/etc/xdg/autostart
...
At least, it works here with libxfce4ui 4.18.4 and xfce4-screensaver recompiled with the .desktop file
What works for me:
- same as dr.s : libxfce4ui 4.18.3 + xfce4-screensaver
or : libxfce4ui 4.18.4 + xfce4-screensaver recompiled with .desktop file