A great new feature introduced in the Microsoft Windows Vista is the “Hybrid Sleep” mode. This is a definite boost from the ordinary “Sleep” feature wherein the unsaved programs and other running programs on the computer were lost in case of a power outage. This was because the Sleep mode would serialize the current state into memory and then shut down all devices other than the RAM. This problem has now been resolved with the “Hybrid Sleep” mode in which the information is saved on the memory as well as a hibernation file similar to the “Hibernate” option.
This function is quite irrelevant for desktop users with UPS backup or those using laptops as these systems are configured to automatically go into hibernation or shutdown as soon as the battery has been reduced to a certain level. Moreover, switching to this feature resulted in the reduction of the performance of the Sleep feature. To turn off and disable the feature follow this step by step process.
Step 1: Click “Start” and select the “Control Panel” option. Redirected to the Control panel page, you need to select the “System and Maintenance” link to view the icon of “Power Options”. This runs the “Power Options Properties” applet.
Step 2: Click on “Select a power plan” tab, and under the “Preferred plans” section, select the option for “Change plan settings”.
Step 3: You are now redirected to the “Change settings for the plan” page. Now click on the “Change advanced power settings” option and under the “Advanced settings” tab, expand the button next to the “Sleep” tree followed by the expansion of the “Allow hybrid sleep” option. Select “Off” from the drop-down list as the value for both “On battery” and “Plugged in” options in your laptops. Click Ok and save the changes.
Trying to enable the “Hybrid Sleep” feature in Vista and are simply unable to locate the “Allow hybrid sleep” option under the Advanced Settings tab of the Power Options box? You can try using the “powercfg.exe -a” command in command prompt to list the number of power states. However if you have tried using this step and have come face to face with an output such as
“The system Your browser may not support display of this image. Or firmware does not support this standby state: Hybrid Sleep”, then you can try using some simple resolution steps.
Sometimes the problem can be fixed by simply restarting the computer. This allows the Hybrid Sleep option to reappear under the Advanced Settings tab and also displays the sleep state when the powercfg.exe -a command is run. However in certain cases the problem is rooted in much more complicated causes.
A possible cause for the missing Hybrid Sleep function in Vista could be inability of the BIOS or the motherboard in supporting ACPI S3 sleep/standby state. While most ACPI compliant hardware do not face this problem, certain motherboard BIOS provide the users the facility to choose the suspend type or state S0, S1, S2, S3, S4, S5 to be implemented. Most of the times the S1 power state is implemented as the default power state. To find the Hybrid Sleep state restart the computer and boot into the BIOS to check the default suspend support. Now change the suspend state to S3 which is STR or the “Suspend to RAM” state to enable the Hybrid Sleep option.
The problem can also be attributed to a race condition existing between the Monitor.sys driver and a kernel setting. This can be corrected by using a supported hotfix available from Microsoft. You can contact Microsoft Customer Service and Support to obtain the hotfix or downloaded it
Windows Vista has upgraded from the hibernation and sleep modes supported by the Windows operating system and introduced the “Hybrid Sleep” mode. This mode combines the best of both the sleep and hibernate features. It allows the PC to not only go into the Standby mode to save electricity and conserve power but also enables the recovery of your unsaved data and other opened programs. So if you are tired of losing out on unsaved data after a power outage while the computer is in Sleep state, try the Hybrid Sleep mode, wherein a hibernation file is created and saved on the hard drive. Tapping the keyboard or moving the mouse enables the computer to load the hibernation file and you can soon resume work. Here is a step by step guide on how to enable hybrid sleep in Microsoft Windows Vista.
Step 1: Click the Start button on your screen and select the “Control Panel” option
Step 2: Select the “System and Maintenance” option and click on the “Power Options”.
Step 3: The applet runs a number of options. On the “Select a power plan” page, and “Preferred plans” section, you need to change the power settings.
Step 4: Select the option of “Change advanced power settings” on the “change the power settings” page. This redirects you to “Advanced settings” page wherein you need to select the power options. Click on the expand button displayed next to the “Sleep” option and then expand the option for “Allow hybrid sleep” subtree. Based on whether you are using Vista on desktop or a notebook, your options would differ. For a desktop select “On” from the drop-down list while for a notebook, select “On” for both “On battery” and “Plugged in” selections displayed under the settings option. Click the “Ok” button and save the changes.
Standby or the basic Sleep mode allows the computer to enter into a lower power consumption mode. The programs and data are stored in the memory. Supported by Windows operating system for quite a while now, the Sleep mode is different from the Hibernate feature (How to hibernate in windows XP) wherein your documents are saved onto the hard drive before the computer shuts down. Influenced by both these features, Vista has launched the Hybrid Sleep mode which is primarily aimed at desktop computers.
So how exactly is Sleep different from the Hybrid Sleep mode?
The power saving Sleep state allows the documents and other programs to be saved on the RAM while the rest of the system is powered off. Until the memory is powered, your existing data is safe and you can quickly resume full power operation. However if the power supply to the RAM is lost or the battery is discharged, you could end up losing the data. Moreover the computer has to be rebooted again. This problem has been resolved in Windows Vista installed on laptops and notebooks as the Sleep mode is enhanced to initially enter the standby mode and then when the battery is critically low, switch to the Hibernate function. To use the Sleep function, users need to click the Power button on the Start Menu or leave your computer inactive for some time.
Hybrid Sleep mode saves the documents and programs to the memory as well as the hard disk, while entering the Sleep mode. Thus in case of a power outage, your work can be restored from the hard drive where it is saved as hiberfil.sys hibernation file. The only drawback is that mode is slower than basic Sleep mode because it needs to save memory state into hibernation file. For using this mode, the function has to be enabled in Vista so that each time you click on Sleep in Power option, Vista will always put the computer into Hybrid Sleep mode.