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lcd设置自动关屏时间:
echo 0 > /sys/module/kernel/parameters/consoleblank
注:
drivers/tty/vt/vt.c:static int blankinterval = 10*60;
drivers/tty/vt/vt.c:core_param(consoleblank, blankinterval, int, 0444);
lcd关闭黑屏:
Framebuffer console blankes out after blanking interval. Framebuffer console blanking and unblanking can be set via below sysfs interfaces.
to unblank:
$echo "0" > /sys/class/graphics/fb0/blank
to blank:
$echo "4" > /sys/class/graphics/fb0/blank |
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