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