What is ErP S4 and S5?
S4 is a hybernate state that takes the system to lowest power mode without being completely off. S5 is a COMPLETE shutdown, IE no power should be used in this state.
What is S4 S5 state?
States S1, S2, S3, and S4 are sleeping states, in which the computer appears off because of reduced power consumption but retains enough context to return to the working state without restarting the operating system. State S5 is the shutdown or off state.
What does ErP Ready mean on a motherboard?
The function of “ErP ready” is to reduce your computer’s power consumption when powered down to below 1 watt. It deactivates stuff like wake on lan and other wake functions, so if you need that, don’t enable it, otherwise it can’t hurt.
What is ASUS ErP Ready?
ErP Support determines whether to let the system consume less than 1W of power in S5 (shutdown) state. When the setting is enabled, the following four functions will become unavailable: PME Event Wake Up, Power On By Mouse, Power On By Keyboard, and Wake On LAN.
What is S4 S5 Wake on LAN?
Wake-on-LAN behavior The wake-on-LAN (WOL) feature wakes the computer from a low power state when a network adapter detects a WOL event (typically, a specially constructed Ethernet packet). WOL is supported from sleep (S3) or hibernate (S4). WOL is not officially supported from soft off (S5).
How do I enable ErP in BIOS?
BIOS
- Turn on the PC, and then follow the prompt on the boot screen to go to the BIOS.
- Select “M.I.B.
- Scroll down to the “AMP” or “AMD Memory Profile (A.M.P.)” option.
- Press “+” or “-” to change the setting to “Enabled.” Follow the instructions on the bottom or side of the screen to save and quit the BIOS.
What happens when the BIOS ERP is in S4?
System restarts from the saved hibernate file. If the hibernate file cannot be loaded, rebooting is required. Reconfiguring the hardware while the system is in the S4 state might result in changes that prevent the hibernate file from loading correctly.
What’s the difference between state S4 and S5?
The only difference between states S4 and S5 is that the computer can restart from the hibernate file in state S4, while restarting from state S5 requires rebooting the system. Off, except for trickle current to devices such as the power button. Boot is required upon awakening. Long and undefined.
What happens when the system is in S4?
Software resumption System restarts from the saved hibernate file. If the hibernate file cannot be loaded, rebooting is required. Reconfiguring the hardware while the system is in the S4 state might result in changes that prevent the hibernate file from loading correctly. Hardware latency Long and undefined.
Where does the operating system go in the S4 state?
Operating system context, however, is maintained in a hibernate file (an image of memory) that the system writes to disk before entering the S4 state. Upon restart, the loader reads this file and jumps to the system’s previous, prehibernation location.
