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<page xmlns="http://projectmallard.org/1.0/"
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type="topic" style="problem"
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id="power-suspendfail">
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<link type="guide" xref="power#problems"/>
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<link type="guide" xref="hardware-problems-graphics"/>
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<revision pkgversion="3.4.0" date="2012-02-20" status="review"/>
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<revision version="13.10" date="2013-09-19" status="review"/>
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<desc>Some computer hardware causes problems with suspend or hibernate.</desc>
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<credit type="author">
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<name>GNOME Documentation Project</name>
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<email>gnome-doc-list@gnome.org</email>
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<credit type="author">
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<name>Ekaterina Gerasimova</name>
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<email>kittykat3756@gmail.com</email>
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<include href="legal.xml" xmlns="http://www.w3.org/2001/XInclude"/>
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<title>Why won't my computer turn back on after I suspended it?</title>
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<p>If you <link xref="power-suspend">suspend</link> or <link
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xref="power-hibernate">hibernate</link> your computer, then try to resume it or
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turn it back on, you may find that it does not work as you expected. This could
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be because suspend and hibernate aren't supported properly by your
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<title>My computer is suspended and isn't resuming</title>
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<p>If you suspend your computer and then press a key or click the mouse, it
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should wake up and display a screen asking for your password. If this doesn't
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happen, try pressing the power button (don't hold it in, just press it
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<p>If this still doesn't help, make sure that your computer's monitor is
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switched on and try pressing a key on the keyboard again.</p>
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<p>As a last resort, turn off the computer by holding in the power button for
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5-10 seconds, although you will lose any unsaved work by doing this. You
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should then be able to turn on the computer again.</p>
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<p>If this happens every time you suspend your computer, the suspend
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feature may not work with your hardware.</p>
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<note style="warning">
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<p>If your computer loses power and doesn't have an alternative power
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supply (such as a working battery), it will switch off.</p>
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<section id="hibernate">
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<title>None of my applications/documents are open when I turn on the computer
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<p>If you hibernated your computer and switched it on again, but none of your
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documents or applications are open, it probably failed to hibernate properly.
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Sometimes this happens because of a minor problem, and the computer will be
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able to hibernate properly the next time you do it. It might also happen
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because you had installed a software update which required the computer to be
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restarted; in this case, the computer may have shut down instead of
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<p>It is also possible that the computer is not capable of hibernating
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because the hardware doesn't support it properly. This might be because of a
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problem with Linux drivers for your hardware, for example. You can test this
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by hibernating again and seeing if it works the second time. If it doesn't,
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it is probably a problem with your computer's drivers.</p>
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<section id="hardware">
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<title>My wireless connection (or other hardware) doesn't work when I wake
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up my computer</title>
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<p>If you suspend or hibernate your computer and then resume it again, you
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may find that your internet connection, mouse, or some other device doesn't
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work properly. This could be because the device's driver doesn't
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properly support suspend or hibernate. This is a <link
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xref="hardware-driver">problem with the driver</link> and not the device
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<p>If the device has a power switch, try turning it off and then on again. In
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most cases, the device will start working again. If it connects via a USB
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cable or similar, unplug the device and then plug it in again and see if it
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<p>If you cannot turn off/unplug the device, or if this does not work, you
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may need to restart your computer for the device to start working again.</p>
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ubuntu-kylin-help/C/power-suspendfail.page
