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Sleep / Hibernate / Shut down

  • 15-09-2008 12:01am
    #1
    macgowan
    Closed Accounts Posts: 55 ✭✭


    Can someone just explain what the basic differences are between these three options, in terms of what gets closed, roughly how much power they use (excluding shut down obviously), etc?

    When is each of them intended to be used, exactly?

    (specifically for a Dell Studio, if you're wondering)


Comments

  • #2
    Standard Toaster
    Registered Users, Registered Users 2 Posts: 10,288 ✭✭✭✭Standard Toaster


    I'm guessing sleep is standby. It turns off all nonessential hardware, including the monitor, hard drives, and removable drives. This means that the system reactivates itself very quickly when "woken up". This does not power down the system.

    Hibernate is where the contents of RAM is written to non-volatile storage, such as the hard disk before powering off the system. (Windows....look for file "C:\hiberfil.sys")
    Later the system can be restored to the state it was in when hibernation was invoked, so that programs can continue executing as if nothing happened. Hibernating and restoring from hibernate is also generally faster than a hard reboot and, if necessary, can be done without user interaction (unlike shutting down, which often requires the user to specify if open documents should be saved).

    To use hibernation the hard disk needs to have at least as much free space as there is RAM on the system.

    Shutdown is, well, shutting down the system completey.

    Mostly plagiarized from wikipedia.org


  • #3
    Alanstrainor
    Registered Users, Registered Users 2 Posts: 23,157 ✭✭✭✭Alanstrainor


    Haha, +1/


  • #4
    bnt
    Registered Users, Registered Users 2 Posts: 13,073 ✭✭✭✭bnt


    The amount of power used depends on the system, especially the CPU. This is one thing the Atom processor in netbooks does very well: I've left a machine on standby overnight (8h), and it came back up with 95% charge left. Older CPUs: not so good.

    You are the type of what the age is searching for, and what it is afraid it has found. I am so glad that you have never done anything, never carved a statue, or painted a picture, or produced anything outside of yourself! Life has been your art. You have set yourself to music. Your days are your sonnets.

    ―Oscar Wilde predicting Social Media, in The Picture of Dorian Gray



  • #5
    Overheal
    Registered Users, Registered Users 2 Posts: 86,729 ✭✭✭✭Overheal


    The_Edge wrote: »
    I'm guessing sleep is standby. It turns off all nonessential hardware, including the monitor, hard drives, and removable drives. This means that the system reactivates itself very quickly when "woken up". This does not power down the system.

    Correct. In Vista the only piece of hardware that still receives power in sleep mode is the RAM - and the mouse and keyboard for waking up with. And Even some of whats in RAM gets dumped into the pagefile before entering Sleep. Very power efficient.


  • #6
    Overheal
    Registered Users, Registered Users 2 Posts: 86,729 ✭✭✭✭Overheal


    By the way does anyone else have problems getting their laptops into sleep mode while high performance is on? My always just locks the computer and shuts the monitor off - it doesn sleep unless its in balanced or power saver.


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