<?xml version="1.0" encoding="utf-8"?>
<page xmlns="http://projectmallard.org/1.0/" type="topic" style="problem" id="sound-nosound" xml:lang="it">

  <info>
    <link type="guide" xref="sound-broken"/>

    <revision pkgversion="3.4.0" date="2012-02-19" status="outdated"/>
    <revision pkgversion="3.13.92" date="2014-09-22" status="review"/>

    <credit type="author">
      <name>Progetto documentazione di GNOME</name>
      <email>gnome-doc-list@gnome.org</email>
    </credit>

    <include xmlns="http://www.w3.org/2001/XInclude" href="legal.xml"/>

    <desc>Check that it is not muted, that cables are plugged in properly, and
    that the sound card is detected.</desc>
  
    <mal:credit xmlns:mal="http://projectmallard.org/1.0/" type="translator copyright">
      <mal:name>Luca Ferretti</mal:name>
      <mal:email>lferrett@gnome.org</mal:email>
      <mal:years>2011, 2012</mal:years>
    </mal:credit>
  
    <mal:credit xmlns:mal="http://projectmallard.org/1.0/" type="translator copyright">
      <mal:name>Flavia Weisghizzi</mal:name>
      <mal:email>flavia.weisghizzi@ubuntu.com</mal:email>
      <mal:years>2011, 2012</mal:years>
    </mal:credit>
  </info>

<title>Nessun suono viene riprodotto dal computer</title>

  <p>If you cannot hear any sounds on your computer, for example when you try
  to play music, try these troubleshooting steps to see if you can fix the
  problem.</p>

<section id="mute">
  <title>Assicurarsi che il volume non sia impostato a muto</title>

  <p>Open the <gui xref="shell-terminology">system menu</gui> from the right
  side of the top bar and make sure that the sound is not muted or turned right
  down.</p>

  <p>Alcuni computer portatili dispongono di interruttori fisici per abilitare o disabilitare l'audio: provare a premere quel tasto e controllare se risolve il problema.</p>

  <p>You should also check that you have not muted the application that you are
  using to play sound (for example, your music player or movie player). The
  application may have a mute or volume button in its main window, so check
  that. Also, open <app>Settings</app> from the <gui>Activities</gui> overview
  and click <gui>Sound</gui>. Go to the <gui>Applications</gui> tab and check
  that your application is not muted.</p>

</section>

<section id="speakers">
 <title>Controllare il funzionamento degli altoparlanti</title>
 <p>If your computer has external speakers, make sure that they are turned on
 and that the volume is turned up. Make sure that the speaker cable is securely
 plugged into the "output" audio socket on your computer. This socket
 is usually light green in color.</p>

 <p>Alcune schede audio sono in grado do modificare la presa utilizzata per l'uscita (verso gli altoparlanti) e per l'ingresso (da un microfono). La presa che gestisce l'uscita audio potrebbe risultare diversa sotto Linux rispetto a Windows o Mac OS. Provare a collegare il cavo degli altoparlanti alle diverse prese audio del computer per assicurarsi che funzionino.</p>

 <p>Un'ultimo controllo consiste nel verificare che il cavo audio sia saldamente collegato agli altoparlanti: alcuni possono avere più di un ingresso.</p>
</section>

<section id="device">
  <title>Controllare che il corretto dispositivo audio sia selezionato</title>

  <p>Alcuni computer dispongono di molteplici dispositivo audio installati. Alcuni di questi sono in grado di riprodurre audio, altri no ed è per questo che è necessario verificare di aver selezionato quello corretto (potrebbe essere necessario procedere per tentativi prima di trovare quello corretto).</p>

  <steps>
    <item>
      <p>Open the <gui xref="shell-terminology">Activities</gui> overview and
      start typing <gui>Sound</gui>.</p>
    </item>
    <item>
      <p>Click on <gui>Sound</gui> to open the panel.</p>
    </item>
    <item>
      <p>In the <gui>Output</gui> tab. Make a note of which device and which
      profile are selected (so you can return to the default selections if
      changing them does not work).</p>
    </item>
    <item>
      <p>For the selected device, try changing the profile—play a sound after
      you change the profile to see if it works. You might need to go through
      the list and try each profile.</p>
    </item>
    <item>
      <p>If that does not work, you might want to try doing the same for any
      other devices that are listed.</p>
    </item>
  </steps>

</section>

<section id="hardware-detected">

 <title>Controllare che la scheda audio sia rilevata correttamente</title>

  <p>Your sound card may not have been detected properly. If this has happened,
  your computer will think that it is not able to play sound. A possible reason
  for the card not being detected properly is that the drivers for the card are
  not installed. You may need to manually install the drivers for the card.
  How you do this will depend on the card you have.</p>

  <p>You can see what sound card you have by using the <cmd>lspci</cmd> command
  in the Terminal. Go to the <gui>Activities</gui> overview and open a Terminal.
  You may have to run <cmd>lspci</cmd> as
  <link xref="user-admin-explain">superuser</link>; either type
  <cmd>sudo lspci</cmd> and type your password, or type <cmd>su</cmd>, enter
  the <em>root</em> (administrative) password, then type <cmd>lspci</cmd>. See
  if an <em>audio controller</em> or <em>audio device</em> is listed—it should
  have the make and model number of the sound card. <cmd>lspci -v</cmd> will
  show a list with more detailed information.</p>

  <p>You may be able to find and install drivers for your card. It is best to
  ask on support forums (or otherwise) for your Linux distribution for
  instructions.</p>

  <p>If you cannot get drivers for your sound card, you might prefer to buy a
  new sound card. You can get sound cards that can be installed inside the
  computer and external USB sound cards.</p>

</section>

</page>
