AnsweredAssumed Answered

strange blink pixels on lvds screen

Question asked by c xh on Jun 10, 2015
Latest reply on Jun 11, 2015 by c xh



We found there's strange blink pixels on lvds screen sometimes.


We try to write the fb0/blank device to make the screen blank and restore it again,

and then found the blink pixels may disappears or appears randomly.

    root@sabresd_6dq:/ # echo 1 > /sys/class/graphics/fb0/blank                   

    root@sabresd_6dq:/ # echo 0 > /sys/class/graphics/fb0/blank


Here's the boot command

    root@sabresd_6dq:/ # cat /proc/cmdline                                       

    console=ttymxc0,115200 androidboot.console=ttymxc0 androidboot.hardware=freescale init=/init video=mxcfb0:dev=ldb,1280x800M@60,if=RGB666,bpp=32 video=mxcfb1:dev=hdmi,1920x1080M@60,if=RGB24,bpp=32 video=mxcfb2:off fbmem=14M,28M vmalloc=512M ldb=dul1


This is screen with strange blink pixel --


This is good screen --



Thank you!

Any suggestion will be appreciated!