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[aiuto] audio con rumore

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salve a tutti, ho installato il kext modificato voodoohda per la mia realtek alc272. il problema è che si presenta un rumore di sottofondo dovuto al microfono integrato sempre attivo. ho provato ad installare il voodoo pref pane. ma nella lista di periferiche non vi è lo speaker cd.Cioè quello con cui mi da l'audio. sapete aiutarmi?

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