![]() ![]() When you’re not using your computer, putting it into sleep mode helps to keep your hard drive from being needlessly accessed, which can wear it down over time. Sleep mode is also good for your hard drive: Hard drives are spinning disks that store your data and are one of your computer’s most delicate parts.Shutting down your computer at night gives it a chance to rest, which can help prevent unexpected failures. It’s more reliable: Computers are complex machines, and running them 24/7 makes them more likely to break down.It’s much more energy-efficient: A sleeping computer uses only a fraction of the power of a fully awake one, so you’ll save money on your electric bill.This means you can pick up right where you left off without restarting your computer. ![]() Faster resume: It allows your computer to enter a low-power state while retaining all of its current information.What Are the Benefits of Using Sleep Mode on a Computer? This reduces the wear and tear on your computer components and can help extend their lifespan. So, if you need to step away from your computer for a few minutes, Sleep mode is a good way to save power and reduce energy consumption.įurther, when in sleep mode, your computer’s display is turned off, the hard drive or SSD is powered down, and the fan stops spinning. You can easily wake your computer from sleep mode by pressing any key on the keyboard or clicking the mouse. Although sleep mode uses a small amount of power, it’s still less than starting up your computer from a completely powered-off state. When you’re done using your computer for the day, you may not want to shut it down completely. It is a power-saving state that allows your computer to quickly resume full-power operation (typically within seconds) when you want to start using it again. Sleep mode saves your open documents and applications in memory (RAM) and places your computer in a low-power state so you can quickly resume your work. It is important to know that in the case of Hibernation/Hybrid-Sleep, the boot/startup procedure should not be interrupted (by the power button or power failure) or the programs' session&data saved on swap-partition (by the 'hibernation' action) will be lost.Related posts: What Is Sleep Mode? The computer is sleep. In case of total power drain, the Hibernation capability is used: the machine is shut down but is able to restore all programs from swap upon startup. As long as power is not completely drained, only the 'Sleep/Suspend to RAM' capability is visible. It ensures all that is needed for the Hibernation procedure to work, but it doesn't shut down the machine instead, it suspends it to RAM (Sleep mode). Hybrid Sleep is not an intermediary state between Suspension/backup to RAM ("Sleep") and that to disk ("Hibernation"), but a double operation it simply does both. Putting the battery back and starting the machine from the power button, my multi-boot list became available (Windows etc.), and when booting Linux it all went just like in the case of hibernation (message with booting from dev/disk/.), my open unsaved document was available. At this point the machine was fully shut down, the LED was dead. As the laptop cable was disconnected, I have also removed the battery. At this point the LED beside the power button was blinking, like in Sleep mode. I have opened a text document, written something and, without saving the document, entered hybrid sleep with the command systemctl hybrid-sleep. In case of total battery drain when the machine shuts down completely: what happens with the hybrid-sleep state? I think the RAM data is lost, but is the HDD backup restored when the Linux system is started again?Īs I was expecting a quick answer which didn't came, I have subjected an older laptop to a rough test intended to provide the answer: I know that Hybrid-Sleep is an intermediary operation it doesn't shut down the machine (you cannot for example go to Windows in multi-boot) and the RAM is refreshed (like in "Sleep/Suspend to RAM") while data is also saved to the swap space of the HDD. (In case of multi boot, one may chose to use other systems like Windows before going back to the Linux, with no impact on the effectiveness of the hibernation procedure.) When the Linux system is started up again the session is restored from disk with all the open programs. In Hibernation, the session data active in RAM is saved on the HDD (I think swap partition is needed for this) and then the machine shuts down completely. I think that Sleep/Suspend to RAM is just saving session to RAM, therefore entering sleep and restoring very quickly, but in case of total battery drain the session is lost as the machine shuts down by power failure. ![]()
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