Hi ferran
... I suggest you reboot without any alsa or pulseaudio extensions set "onboot" or "ondemand", ...
1. Click on the Apps icon.
2. Click Apps->Maintenance->OnBoot Maintenance.
3. In the On Boot Items panel, click the item you wish to remove from your onboot.lst file.
4. Click the Delete Item from List button.
5. Repeat steps 3 and 4 as required.
6. Click Apps->Maintenance->OnDemand Maintenance.
7. Remove all items.
8. Exit the Apps program.
9. Reboot your machine.
You can also use the Apps->Maintenance->OnBoot Maintenance page to add items back to your onboot.lst file.