49 lines
1.8 KiB
Plaintext
49 lines
1.8 KiB
Plaintext
What: /sys/devices/platform/samsung/performance_level
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Date: January 1, 2010
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KernelVersion: 2.6.33
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Contact: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Description: Some Samsung laptops have different "performance levels"
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that can be modified by a function key, and by this
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sysfs file. These values don't always make a whole lot
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of sense, but some users like to modify them to keep
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their fans quiet at all costs. Reading from this file
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will show the current performance level. Writing to the
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file can change this value.
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Valid options:
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- "silent"
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- "normal"
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- "overclock"
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Note that not all laptops support all of these options.
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Specifically, not all support the "overclock" option,
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and it's still unknown if this value even changes
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anything, other than making the user feel a bit better.
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What: /sys/devices/platform/samsung/battery_life_extender
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Date: December 1, 2011
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KernelVersion: 3.3
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Contact: Corentin Chary <corentin.chary@gmail.com>
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Description: Max battery charge level can be modified, battery cycle
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life can be extended by reducing the max battery charge
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level.
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- 0 means normal battery mode (100% charge)
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- 1 means battery life extender mode (80% charge)
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What: /sys/devices/platform/samsung/usb_charge
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Date: December 1, 2011
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KernelVersion: 3.3
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Contact: Corentin Chary <corentin.chary@gmail.com>
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Description: Use your USB ports to charge devices, even
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when your laptop is powered off.
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1 means enabled, 0 means disabled.
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What: /sys/devices/platform/samsung/lid_handling
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Date: December 11, 2014
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KernelVersion: 3.19
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Contact: Julijonas Kikutis <julijonas.kikutis@gmail.com>
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Description: Some Samsung laptops handle lid closing quicker and
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only handle lid opening with this mode enabled.
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1 means enabled, 0 means disabled.
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