<?xml version="1.0" encoding="utf-8"?>
<page xmlns="http://projectmallard.org/1.0/" xmlns:its="http://www.w3.org/2005/11/its" type="topic" style="a11y task" id="a11y-visualalert" lang="vi">

  <info>
    <link type="guide" xref="a11y#sound"/>
    <link type="seealso" xref="sound-alert"/>

    <revision pkgversion="3.7.1" date="2012-11-10" status="outdated"/>
    <revision pkgversion="3.9.92" date="2013-09-18" status="candidate"/>
    <revision pkgversion="3.13.92" date="2014-09-20" status="final"/>
    <revision pkgversion="3.18" date="2015-09-28" status="final"/>
    <revision pkgversion="3.33.3" date="2019-07-21" status="final"/>

    <license xmlns="http://projectmallard.org/1.0/" href="https://creativecommons.org/licenses/by-sa/3.0/">
  <p>This work is licensed under a <link href="https://creativecommons.org/licenses/by-sa/3.0/">Creative
  Commons Attribution-ShareAlike 3.0 Unported License</link>.</p>
</license>

    <credit type="author">
      <name>Shaun McCance</name>
      <email>shaunm@gnome.org</email>
    </credit>
    <credit type="editor">
      <name>Michael Hill</name>
      <email>mdhillca@gmail.com</email>
    </credit>
    <credit type="editor">
      <name>Ekaterina Gerasimova</name>
      <email>kittykat3756@gmail.com</email>
    </credit>

    <desc>Enable visual alerts to flash the screen or window when an
    alert sound is played.</desc>
  <credit type="translator copyright"><name>Nguyễn Thái Ngọc Duy</name><email>pclouds@gmail.com</email><years>2011-2012.</years></credit></info>

  <title>Chớp màn hình thay cho báo động âm thnah</title>

  <p>Your computer will play a simple alert sound for certain types of
  messages and events. If you have a hard time hearing these sounds, you
  can have either the entire screen or your current window visually flash
  whenever the alert sound is played.</p>

  <p>This can also be useful if you’re in an environment where you need your
  computer to be silent, such as in a library. See <link xref="sound-alert"/>
  to learn how to mute the alert sound, then enable visual alerts.</p>

  <steps>
    <item>
      <p>Open the <gui xref="shell-introduction#activities">Activities</gui> overview and
      start typing <gui>Accessibility</gui>.</p>
    </item>
    <item>
      <p>Click on <gui>Accessibility</gui> to open the panel.</p>
    </item>
    <item>
      <p>Select the <gui>Hearing</gui> section to open it.</p>
    </item>
    <item>
      <p>In the <gui>Visual Alerts</gui> section, switch the <gui>Visual Alerts</gui>
      switch to on.</p>
    </item>
    <item>
      <p>Under <gui>Flash Area</gui>, select whether you want the entire screen or just
      your current window title to flash.</p>
    </item>
  </steps>

  <note style="tip">
    <p>You can quickly turn visual alerts on and off by clicking the
    <link xref="a11y-icon">accessibility icon</link> on the top bar and
    selecting <gui>Visual Alerts</gui>.</p>
  </note>

</page>
