/dev/fb0 problem

[carmilili]

Hello

     My board is IMX6Q-SDB. When I test the node of /dev/fb0,the video output by HDMI.I find a black point on the left of the screen.You can use the demo of mxc_fb_test.out to see it.

     How can I solve it？

     Thank you.

[justin_jiang]

Which release are you using? Can you change another HDMI display to test?

[carmilili]

LTIB:3.0.35_4.0_130816

I find it is the cursor.

[Yuri]

As for cursor, You may try the following to stop blinking cursor:

# echo 0 > /sys/class/graphics/fbcon/cursor_blink

or in order to  hide cursor:

# echo -e '\033[?17;0;0c' > /dev/tty1 (from serial console)

or

# echo -e '\033[?17;0;0c'    (from framebuffer console)

Have a great day,
Yuri

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[carmilili]

Now ,I  through modify the kernel file of fbcon.c to stop blinking cursor .

[justin_jiang]

OK. Thanks for update. This version should have no problem, I verified it on my side.