Ainda não tenho certeza da causa exata disso, mas "resolvi" meu problema fazendo killall nautilus e clicando em "Arquivos" novamente.
Primeiro usuário do Ubuntu Gnome aqui! Por algum motivo, "Arquivos" (Nautilus?) Não será mais aberto no banco dos réus. Quando clico em "Arquivos", nada acontece.
No entanto, quando eu executo nautilus . do terminal, recebo o seguinte:
(nautilus:12419): Gtk-WARNING **: Failed to register client: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.gnome.SessionManager was not provided by any .service files
Initializing nautilus-dropbox 2.10.0
Nautilus-Share-Message: Called "net usershare info" but it failed: Failed to execute child process "net" (No such file or directory)
Error loading document: Error opening file: Permission denied
(nautilus:12419): GnomeDesktop-WARNING **: Unable to create loader for mime type application/pdf: Unrecognized image file format
(nautilus:12419): GnomeDesktop-WARNING **: Error creating thumbnail for file:///usr/bin/fix-qdf: Unrecognized image file format
^[[Aroot@JW-UBUNTU:/usr/bin# nautilus .
(nautilus:12445): Gtk-WARNING **: Failed to register client: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.gnome.SessionManager was not provided by any .service files
Initializing nautilus-dropbox 2.10.0
Nautilus-Share-Message: Called "net usershare info" but it failed: Failed to execute child process "net" (No such file or directory)
Infelizmente, isso está um pouco acima de mim no momento. Alguém pode lançar alguma luz sobre isso?