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Instead of manually starting mpd on every boot, I enabled the respective systemd user service along with that for mpdscribble and mpDris2 via:
$ systemctl --user enable mpd.service mpdscribble.service mpDris2.service
However this causes Gnome shell to crash on GDM login, may be due to this PulseAudio issue.
However the workaround doesn't work for me!
$ uname -a
Linux hbar 4.11.7-1-ARCH #1 SMP PREEMPT Sat Jun 24 09:07:09 CEST 2017 x86_64 GNU/Linux
$ gnome-shell --version
GNOME Shell 3.24.2
$ pulseaudio --version
pulseaudio 10.0
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pulseaudio is refusing connections according to your log, so you need to sort out pulseaudio for sure.
what workaround have you tried? the one linking the file? did you verify that the file exists?
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