Instale os drivers do scanner e o pacote do utilitário:
sudo apt-get install sane xsane xsane-common sane-utils libsane libsane-common libsane-dbg libsane-dev libsane-extras libsane-extras-common libsane-extras-dbg libsane-extras-dev simple-scan
Em seguida, tente gerenciar o scanner com o aplicativo Simple Scan