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-rw-r--r--gnu/services/audio.scm7
1 files changed, 7 insertions, 0 deletions
diff --git a/gnu/services/audio.scm b/gnu/services/audio.scm
index 471c5fd95f..345d8225b2 100644
--- a/gnu/services/audio.scm
+++ b/gnu/services/audio.scm
@@ -140,6 +140,13 @@ audio_output {
                    "--no-daemon"
                    #$(mpd-config->file config))
              #:pid-file #$(mpd-file-name config "pid")
+             #:environment-variables
+             ;; Required to detect PulseAudio when run under a user account.
+             '(#$(string-append
+                   "XDG_RUNTIME_DIR=/run/user/"
+                   (number->string
+                     (passwd:uid
+                       (getpwnam (mpd-configuration-user config))))))
              #:log-file #$(mpd-file-name config "log")))
    (stop  #~(make-kill-destructor))))