How to make use of Power Management features

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Revision as of 02:27, 7 November 2004 by 212.144.10.161 (Talk) (added some infos)
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APM

general

Todo...

Screen blanking (Standby)

Todo...

Suspend to RAM (Sleep)

Todo...

Suspend to disk (Hibernate)

The Phoenix BIOS allows you two ways to hibernate with APM: using a special partition or using a hibernation file on a dos type partition.

using a hibernation partition

Todo...

using a hibernation file on a dos partition

The partition to put the file on must be a dos or vfat partition. Fat32 formatted partitions have been reported successful as well as Fat16 formatted ones. The file is either created with phdisk.exe, if you happen to have a floppy drive and a bootable dos floppy disk that you can start it from. Under Linux tphdisk will do this job for you.

Todo... (how to create the file, partition size)

ACPI

general

Todo...

Screen blanking (Standby)

Todo...

Suspend to RAM (Sleep)

ACPI Sleep and suspend-to-ram with recent 2.6.x kernels usually works fine, too.

Todo...

Suspend to disk (Hibernate)

There are two drivers for this available:

  • swsusp, which is in the kernel and
  • SoftwareSuspend2 which is more feature rich, but not yet in the kernel, so you have to patch it in yourself

Both are reported to work fine as long as you use open-source graphic drivers. A comparison of the features can be found on this page.

using swsusp

Todo...

=using SoftwareSuspend2

Todo...