Logitech H540 Headset USB doesn't work with some programs

[Xploderman90]

Hi, like I wrote in topic, my headset doesn't work with some programs.

I can use them if I select the correct audio device in VLC, but i can't hear a thing when viewing video on youtube or other sites.
In KDE mixer I can see the headset tab with mic and audio bars.

In audio settings, it's the preferred peripheral for every tab (if I press test, I can hear sounds).

I installed pulseAudio for test and when in output device tab, i can see only the dummy device and no hardware devices (but in the configuration tab i can see logitech H540).

If i have to put something here (like .config of kernel or other) let me know..

Thanks in advance