Imx6 yocto photo display distortion

[chenfeng2016]

Hello 

I met a problem on NXP imx6 yocot system, that is the photo display is distorted. The phenomenon is as follows photo files. please helps to analyze what causes it and how to solve it

Version: Linux 4.14.78_.0.0

Thanks.

[Rita_Wang]

You can refer to Installing Ubuntu Rootfs on NXP i.MX6 boards  and Ubuntu Rootfs on NXP i.MX6QP boards

[dioneva_k]

What is the value of the vidargs variable in U-Boot?
Use the printenv command to find out
Seems to be low quality video settings

Example of the vidargs variable for iMX6 that I use:
video=mxcfb0:dev=ldb,1280x720M@60,if=RGB888,bpp=32 video=mxcfb1:off video=mxcfb2:off video=mxcfb3:off fbmem=1024M

What is the value of bpp?

Regards,

Dionevã M. Krolow

[chenfeng2016]

Hello. Dionevã Krolow

   Thanks for your help , according to your vidargs variable, the display work  right.

[chenfeng2016]

the env parameter  seted as below：

setenv mmcargs 'setenv bootargs ${bootargs} root=/dev/mmcblk3p2 rootwait rw video=mxcfb0:dev=hdmi,1920x1080M@60,if=RGB24'

[Rita_Wang]

Which i.MX6 board are you using? Here is your ubuntu system can not work or the system on your i.MX6 board?

[chenfeng2016]

The board is imx6qp  with the yocto system,

by the way , it has the same phenomenon withe ubuntu system;