http://www.stlinux.com/advanced/power-management/features/standby
http://www.stlinux.com/advanced/power-management/features
The Linux power management subsystem shows a unified sysfs interface to userspace.The interface exists in /sys/power/ directory.
The file: /sys/power/state controls the system power state.A reading from this file, will return what states are supported, which are hard-coded to:
To enter in standby type on the available target:
To enter in suspend on memory type on the available target:
Bibliography
http://www.stlinux.com/advanced/power-management/features
The Linux power management subsystem shows a unified sysfs interface to userspace.The interface exists in /sys/power/ directory.
The file: /sys/power/state controls the system power state.A reading from this file, will return what states are supported, which are hard-coded to:
- standby (Power-On Suspend),
- mem (Power-On Suspend-to-RAM)
- disk (Power-Off Suspend-to-Disk)
Power management option ---> Power management support Power management option ---> Suspend to RAM and standby
target# echo -n standby > /sys/pm/state
target# echo -n mem > /sys/pm/state
Bibliography
- Linux Symposium 2002: The Linux Kernel Device Model
- Linux Symposium 2003: Linux Kernel Power Management
- Linux Symposium 2005: The sysfs Filesystem
- Linux Symposium 2008: Suspend-to-RAM in Linux
- Linux Kernel Weekly: A new suspend/hibernate infrastructure