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| − | [[Image:home.png|link=http://wiki.pcbsd.org/index.php/PC-BSD_Users_Handbook|center|Return to Table of Contents]] [[Image:previous1.png|left|link=http://wiki.pcbsd.org/index.php/Printer_Troubleshooting|Previous: Printer Troubleshooting]] [[Image:next1.png|right|link=http://wiki.pcbsd.org/index.php?title=Session_Manager|Next: Session Manager]] | + | [[Image:home.png|link=http://wiki.pcbsd.org/index.php/PC-BSD_Users_Handbook|center|Return to Table of Contents]] [[Image:previous1.png|left|link=http://wiki.pcbsd.org/index.php/Printer_Troubleshooting|Previous: Printer Troubleshooting]] [[Image:next1.png|right|link=http://wiki.pcbsd.org/index.php/ACPI|Next: ACPI]] |
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| | [[File:Power5.png]] | | [[File:Power5.png]] |
| − |
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| − | man 4 acpi
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| − |
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| − | hw.acpi.acline
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| − | AC line state (1 means online, 0 means on battery power).
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| − |
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| − | hw.acpi.lid_switch_state
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| − | Suspend state (S1-S5) to enter when the lid switch (i.e., a note-
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| − | book screen) is closed. Default is ``NONE'' (do nothing).
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| − |
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| − | hw.acpi.power_button_state
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| − | Suspend state (S1-S5) to enter when the power button is pressed.
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| − | Default is S5 (power-off nicely).
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| − |
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| − | hw.acpi.s4bios
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| − | Indicate whether the system supports S4BIOS. This means that the
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| − | BIOS can handle all the functions of suspending the system to
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| − | disk. Otherwise, the OS is responsible for suspending to disk
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| − | (S4OS). Most current systems do not support S4BIOS.
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| − |
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| − | hw.acpi.sleep_button_state
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| − | Suspend state (S1-S5) to enter when the sleep button is pressed.
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| − | This is usually a special function button on the keyboard.
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| − | Default is S3 (suspend-to-RAM).
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| − |
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| − | hw.acpi.sleep_delay
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| − | Wait this number of seconds between preparing the system to sus-
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| − | pend and actually entering the suspend state. Default is 1 sec-
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| − | ond.
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| − |
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| − | hw.acpi.supported_sleep_state
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| − | Suspend states (S1-S5) supported by the BIOS.
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| − |
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| − | S1 Quick suspend to RAM. The CPU enters a lower power
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| − | state, but most peripherals are left running.
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| − |
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| − | S2 Lower power state than S1, but with the same basic char-
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| − | acteristics. Not supported by many systems.
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| − |
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| − | S3 Suspend to RAM. Most devices are powered off, and the
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| − | system stops running except for memory refresh.
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| − |
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| − | S4 Suspend to disk. All devices are powered off, and the
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| − | system stops running. When resuming, the system starts
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| − | as if from a cold power on. Not yet supported by FreeBSD
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| − | unless S4BIOS is available.
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| − |
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| − | S5 System shuts down cleanly and powers off.
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| − |
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| − | /boot/loader.conf:
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| − |
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| − | hw.acpi.reset_video
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| − | Enables calling the VESA reset BIOS vector on the resume path.
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| − | This can fix some graphics cards that have problems such as LCD
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| − | white-out after resume. Default is 0 (disabled).
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| − |
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| − | man 4 powerd
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Laptop users are concerned with getting the most out of their battery power. KDE provides a power management utility that makes it easy to see your current battery settings and to create power profiles that best match your needs.
