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19 lines
472 B
Bash
Executable File
19 lines
472 B
Bash
Executable File
#!/bin/bash
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# Turn off keyboard backlight before hibernate to prevent hang on power-off.
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# The ASUS keyboard controller can block S4 shutdown if LEDs are active.
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if [[ $1 == "pre" && $2 == "hibernate" ]]; then
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device=""
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for candidate in /sys/class/leds/*kbd_backlight*; do
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if [[ -e "$candidate" ]]; then
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device="$(basename "$candidate")"
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break
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fi
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done
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if [[ -n "$device" ]]; then
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brightnessctl -d "$device" set 0 >/dev/null 2>&1
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fi
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fi
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