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The given reason is: Duplicate of the LEDS and backlight page..
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Meaning of the LEDs from left to right according to gfrancisdev.
Left LED group
- SD card 1
- SD card 2
Right LED group
- Empty (with solder pad for hardware hackers who want to use an additional LED)
- Empty (-"-)
Available through LED and brightness classes:
LED brightness can be controlled through those files. Power and charger LEDs have variable brightness control, others are on/off only.
Note: SD card LEDs use SD cart power supplies, so those must be enabled for those LEDs to work (they are enabled when cards are inserted).
Kept in /etc/default/leds (LEDs)
Note: driver allows lower brightness than you can set using keyboard controls, because some units start to flicker on lowest brightness. This can be changed in /usr/pandora/scripts/op_bright.sh .