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115 lines
3.5 KiB
115 lines
3.5 KiB
What: /sys/devices/platform/i8042/.../sensitivity |
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Date: Aug, 2005 |
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KernelVersion: 2.6.14 |
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Contact: [email protected] |
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Description: |
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(RW) Trackpoint sensitivity. |
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What: /sys/devices/platform/i8042/.../intertia |
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Date: Aug, 2005 |
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KernelVersion: 2.6.14 |
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Contact: [email protected] |
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Description: |
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(RW) Negative inertia factor. High values cause the cursor to |
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snap backward when the trackpoint is released. |
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What: /sys/devices/platform/i8042/.../reach |
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Date: Aug, 2005 |
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KernelVersion: 2.6.14 |
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Contact: [email protected] |
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Description: |
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(RW) Backup range for z-axis press. |
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What: /sys/devices/platform/i8042/.../draghys |
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Date: Aug, 2005 |
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KernelVersion: 2.6.14 |
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Contact: [email protected] |
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Description: |
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(RW) The drag hysteresis controls how hard it is to drag with |
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z-axis pressed. |
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What: /sys/devices/platform/i8042/.../mindrag |
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Date: Aug, 2005 |
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KernelVersion: 2.6.14 |
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Contact: [email protected] |
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Description: |
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(RW) Minimum amount of force needed to trigger dragging. |
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What: /sys/devices/platform/i8042/.../speed |
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Date: Aug, 2005 |
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KernelVersion: 2.6.14 |
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Contact: [email protected] |
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Description: |
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(RW) Speed of the trackpoint cursor. |
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What: /sys/devices/platform/i8042/.../thresh |
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Date: Aug, 2005 |
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KernelVersion: 2.6.14 |
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Contact: [email protected] |
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Description: |
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(RW) Minimum value for z-axis force required to trigger a press |
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or release, relative to the running average. |
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What: /sys/devices/platform/i8042/.../upthresh |
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Date: Aug, 2005 |
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KernelVersion: 2.6.14 |
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Contact: [email protected] |
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Description: |
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(RW) The offset from the running average required to generate a |
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select (click) on z-axis on release. |
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What: /sys/devices/platform/i8042/.../ztime |
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Date: Aug, 2005 |
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KernelVersion: 2.6.14 |
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Contact: [email protected] |
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Description: |
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(RW) This attribute determines how sharp a press has to be in |
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order to be recognized. |
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What: /sys/devices/platform/i8042/.../jenks |
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Date: Aug, 2005 |
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KernelVersion: 2.6.14 |
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Contact: [email protected] |
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Description: |
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(RW) Minimum curvature in degrees required to generate a double |
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click without a release. |
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What: /sys/devices/platform/i8042/.../skipback |
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Date: Aug, 2005 |
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KernelVersion: 2.6.14 |
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Contact: [email protected] |
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Description: |
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(RW) When the skipback bit is set, backup cursor movement during |
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releases from drags will be suppressed. The default value for |
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this bit is 0. |
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What: /sys/devices/platform/i8042/.../ext_dev |
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Date: Aug, 2005 |
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KernelVersion: 2.6.14 |
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Contact: [email protected] |
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Description: |
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(RW) Disable (0) or enable (1) external pointing device. |
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What: /sys/devices/platform/i8042/.../press_to_select |
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Date: Aug, 2005 |
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KernelVersion: 2.6.14 |
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Contact: [email protected] |
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Description: |
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(RW) Writing a value of 1 to this file will enable the Press to |
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Select functions like tapping the control stick to simulate a |
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left click, and writing 0 will disable it. |
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What: /sys/devices/platform/i8042/.../drift_time |
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Date: Dec, 2014 |
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KernelVersion: 3.19 |
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Contact: [email protected] |
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Description: |
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(RW) This parameter controls the period of time to test for a |
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‘hands off’ condition (i.e. when no force is applied) before a |
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drift (noise) calibration occurs. |
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IBM Trackpoints have a feature to compensate for drift by |
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recalibrating themselves periodically. By default, if for 0.5 |
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seconds there is no change in position, it's used as the new |
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zero. This duration is too low. Often, the calibration happens |
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when the trackpoint is in fact being used.
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