topic Re: i.mx6 display system problem, black screen. in i.MX Processors

i.mx6 display system problem, black screen.

jack-chen — Tue, 24 Jul 2018 07:40:14 GMT

Hi all:

I have a question that I'd like to ask you about. After the system is migrated, the display will close after a few minutes (about 5 minutes). The contents displayed after starting up are as follows:

(1) Login

(2) Backgound picture

(3) After about 5 minutes, the screen will be black, but the backlight is still on, and the terminal console can control it. Running the display program will not work, and the console will be stuck. The information of my transplanted system is as follows:

BSP version: L4.1.15_2.0.0-ga
CPU: I.MX6 Dual

Hope to get your help, thank you!##

Re: i.mx6 display system problem, black screen.

igorpadykov — Tue, 24 Jul 2018 23:28:39 GMT

one can try to turn off lcd blanking :

LCD turning white after a few minutes

Best regards
igor
-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------

Re: i.mx6 display system problem, black screen.

jack-chen — Wed, 25 Jul 2018 02:39:48 GMT

hello,

I tried the following command:

echo -e ‘\033[9;0]’ > /dev/tty0
echo -e ‘\033[9;0]’ > /dev/tty1
echo 0 > /sys/class/graphics/fb0/blank
echo 0 > /sys/class/graphics/fb1/blank

It doesn't work. Actually, my console device is tty1 and the framebuff is fb0.

Is there any other way to try it?