Comment 16 for bug 1325752

Hello,
I have good news.
I have found what is the problem with musescore and pulseaudio (I have check the terminal)

It's not a problem of pulseaudio, and not a problem of musescore.
It's just a dependency problem of the package musescore
To work with pulseaudio, musescore require "gawk", and "gawk" is not installed by default.

After installing gawk, musescore say:
"PulseAudio found, but no need to suspend. Starting mscore.real..."

To prevent crash of musescore, we must delete his configuration: ~/.cache/MusE

So, start Musescore, VLC continue to play, and if you have no sound in musescore, go to Préférences and set:

→ Use internal synth
→Portaudio
API: ALSA : pulse

Apply, and now you have sound, just adjust the volume in musescore with the little dedicated window.

Screencast of my test: http://dl.smglive.org/Crone123/PulseAudio/work.mp4 (the bug with Unity in the video is only in the video, it's a problem with Kazam when recording a screencast with 30fps)

So, to fix the bug with musescore, just add gawk as dependency of musescore and set the settings "Portaudio", "ALSA", "pulse" by default in musescore.

For mixxx it's not a solution. Why mixxx doesn't use the standard sound server like all others programs?
(But, I not really use mixxx, I use Musescore for my partitions and I have just seen the problem with mixx because I have tested one time)

Thank you :)