Directly a video demonstrating the bug: https://youtu.be/KwH1MUSWmpg I hope this isn't a duplicate because I didn't find anything that matched my search terms (about what I wrote in the title). I also don't know what product/component this bug should be assigned to. Since Plasma 5.8 (nearly) every time I start plasma (from sddm) this bug occurs. Only after restarting plasma with "kquitapp plasmashell && kstart plasmashell" the bug is fixed. I also noticed this issue pre-5.8 times but it would only occur very rarely. If you need more information, feel free to contact me.
After you restarted plasmashell you get proper plasma styled notifications? It seems it fails to register the notification dbus service. Do you perhaps have any other notification daemon running from another desktop environment or 3rd party?
> After you restarted plasmashell you get proper plasma styled notifications? Yes. > Do you perhaps have any other notification daemon running from another desktop environment or 3rd party? I had i3 installed in this installation but I used xinit/startx then (now sddm) and I uninstalled (hopefully) everything related to i3. Here's a pastebin of the user journal for the current boot: http://pastebin.com/M7sM4fP5
The other notification service seems to be present still, it seems DBus-activated, meaning it will restart whenever someone sends a message to it. Plasma tries to register: Dez 03 09:21:57 g550jk plasmashell[1281]: Failed to register Notifications service Dez 03 09:21:57 g550jk plasmashell[1281]: Terminating current Notification service with pid 1495 after that plasma retries after 3 seconds but this still fails: Dez 03 09:22:00 g550jk plasmashell[1281]: Failed to register Notifications service
The different autostart folders I could find: luca@g550jk ~/.local> ls -al /etc/xdg/autostart/ total 100 drwxr-xr-x 2 root root 4096 31. Dez 23:34 ./ drwxr-xr-x 11 root root 4096 27. Dez 23:53 ../ -rw-r--r-- 1 root root 305 26. Sep 20:40 at-spi-dbus-bus.desktop -rw-r--r-- 1 root root 1818 3. Dez 21:53 baloo_file.desktop -rw-r--r-- 1 root root 7741 9. Aug 00:25 gsettings-data-convert.desktop -rw-r--r-- 1 root root 1092 18. Dez 00:44 kdeconnectd.desktop -rwxr-xr-x 1 root root 11713 27. Dez 12:36 klipper.desktop* -rw-r--r-- 1 root root 1037 27. Dez 12:36 krunner.desktop -rw-r--r-- 1 root root 7086 12. Dez 01:22 org.kde.kgpg.desktop -rw-r--r-- 1 root root 3255 27. Dez 22:16 pam_kwallet_init.desktop -rw-r--r-- 1 root root 2313 27. Dez 12:36 plasmashell.desktop -rw-r--r-- 1 root root 3549 27. Dez 22:07 polkit-kde-authentication-agent-1.desktop -rwxr-xr-x 1 root root 356 31. Dez 21:06 polychromatic-tray-applet.desktop* -rw-r--r-- 1 root root 5450 27. Dez 22:07 powerdevil.desktop -rw-r--r-- 1 root root 7931 22. Sep 2015 print-applet.desktop -rw-r--r-- 1 root root 4459 25. Jun 2016 pulseaudio.desktop -rw-r--r-- 1 root root 517 31. Dez 17:16 razer-service.desktop -rw-r--r-- 1 root root 1092 27. Dez 12:36 xembedsniproxy.desktop luca@g550jk ~/.local> ls -al ~/.config/autostart/ total 48 drwxr-xr-x 2 luca luca 4096 21. Dez 11:12 ./ drwxr-xr-x 132 luca luca 12288 1. Jän 23:23 ../ -rw-r--r-- 1 luca luca 202 21. Dez 11:12 Nextcloud.desktop -rw-r--r-- 1 luca luca 370 11. Nov 10:42 keybase_autostart.desktop -rw-r--r-- 1 luca luca 199 24. Mai 2016 ownCloud.desktop -rw-r--r-- 1 luca luca 1868 21. Nov 18:45 redshift-gtk.desktop -rwxr--r-- 1 luca luca 400 29. Okt 21:34 redshift-qt.desktop* -rw-r--r-- 1 luca luca 180 25. Feb 2016 remmina-applet.desktop -rw-r--r-- 1 luca luca 515 13. Jul 20:59 shutter.desktop -rwxr--r-- 1 luca luca 568 9. Okt 21:19 telegramdesktop.desktop* I don't know where else to look...
I just uninstalled "dunst" which I still had installed... I didn't try it but I strongly believe it's fixed now... Thanks :) (and the dunst autostart was hidden in /usr/share/dbus-1/services/org.knopwob.dunst.service)
Glad you found it :) probably should have guided you towards tha ominous dbus-1 directory