start-pulseaudio-x11 se trouve dans: pulseaudio-module-x11
Tu as ce paquet ?
Sinon chez moi:
# rpm -qa \*pulseaudio\*
pulseaudio-utils-5.0-7.fc20.x86_64
pulseaudio-libs-glib2-5.0-7.fc20.x86_64
pulseaudio-module-x11-5.0-7.fc20.x86_64
pulseaudio-libs-5.0-7.fc20.x86_64
alsa-plugins-pulseaudio-1.0.27-2.fc20.x86_64
pulseaudio-5.0-7.fc20.x86_64