关于QT程序的黑屏问题

teddy

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

teddy

你好，现在读出来就已经是0，默认不关屏了啊。

root@am437x-evm:~# cat /sys/module/kernel/parameters/consoleblank
0