akicontrol
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Akicontrol is a GPLv2 X utility developed by Daniel O'Neill to:
- Monitor battery status
- Control LCD brightness
- Switch CPU governors
- Handle power button keypresses (to enable and disable the LCD/Backlight)
The application uses Qt and is developed in C++ for use on the Sun4i-based H6 Netbook, but may also be useful on other devices running Xorg.
A udev rule must be in place to make the /dev/disp device writable by the application user to manage the display.
To work with CPU governors the user must have the ability to:
- Read /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors
- Read and Write /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
An example udev .rules file and systemd-compatible initscript for setting permissions can be found in the contrib/ directory in the source. These both assume the user is member to the groups video and sys.