Same here. The second seems to be related to seahorse-daemon...

https://bugs.launchpad.net/ubuntu/+source/seahorse/+bug/457482

On Tuesday, October 13, 2015 at 9:59:15 PM UTC+3, JuanPe Rodríguez wrote:
>
> Hello, I stand before the cuminidad
>
> Forgive my English.
>
> I installed GNOME 3.18 void and have two errors.
>
> 1. I can not shut down or restart from gnome.
> 2. I get this error has login "Can not publish discovery information on 
> the network."
>
> Another issue is s not use systemd using this distribution?
>
>
> En mí idioma ya que he escuchado que es española.
>
>
> He instalado void con gnome 3.18 y tengo dos errores.
>
> 1.  No puedo apagar ni reiniciar desde gnome.
> 2. Recibo este error ha iniciar sessión "Can't publish discovery 
> information on the network."
>
> Otra cuestion es sy no usa systemd que usa esta distribución?
>