diff --git a/pkgs/tools/X11/xlaunch/default.nix b/pkgs/tools/X11/xlaunch/default.nix
index 3cab25837e6..b97c9def822 100644
--- a/pkgs/tools/X11/xlaunch/default.nix
+++ b/pkgs/tools/X11/xlaunch/default.nix
@@ -46,6 +46,9 @@ EOF
 			  RESET_OPTION=\"-noreset\"
 			fi;
 			XCMD=\"\$(egrep \"^Environment=\" /etc/systemd/system/display-manager.service | sed -e \"s/Environment=/ export /\" | sed -e '\\''s/#.*//'\\'' ; echo export _XARGS_=\\\$\\( grep xserver_arguments \\\$SLIM_CFGFILE \\| sed -e s/xserver_arguments// \\| sed -e s/:0/:\${_display}/ \\| sed -e s/vt7/vt\$((7+_display))/ \\) ; echo ${xorgserver}/bin/X \\\$_XARGS_ \$RESET_OPTION )\" 
+			PRE_XCMD=\"\$(egrep \"^ExecStartPre=\" /etc/systemd/system/display-manager.service | sed -e \"\s/ExecStartPre=//\")\"
+			echo \"\$PRE_XCMD\" 
+			echo \"\$PRE_XCMD\" | bash
 			echo \"\$XCMD\" 
 			echo \"\$XCMD\" | bash &
 			while ! test -e /tmp/.X11-unix/X\$_display &>/dev/null ; do sleep 0.5; done