Edit File: modprobe-dist-oss.conf
# OSS Sound Support # This has been disabled in F11 onwards because it can interfere with the # PulseAudio sound service (a legacy OSS application can prevent PulseAudio # applications from playing sound by preventing PulseAudio from (re-)opening # the sound device). To re-enable support, copy this file to # the /etc/modprobe.d directory. # install snd-pcm /sbin/modprobe --ignore-install snd-pcm && /sbin/modprobe snd-pcm-oss && /sbin/modprobe snd-seq-device && /sbin/modprobe snd-seq-oss