AnsweredAssumed Answered

i.Mx6Q dual display with HDMI and LCD on linux QT

Question asked by nick ruan on Feb 4, 2017
Latest reply on Feb 7, 2017 by igorpadykov

Hi supporter,

My iMx6Q board is runing linux+QT, HDMI and LCD device are connected.

I want to support dual display, and set environment in uboot as follow:

setenv bootargs_mmc 'setenv bootargs ${bootargs} root=/dev/mmcblk0p1 rootwait rw video=mxcfb0:dev=lcd,TIANMA050-WVGA@60,bpp=32,if=RGB24 video=mxcfb1:dev=hdmi,1920x1080M@60,if=RGB24,bpp=32 video=mxcfb2:off ldo_active=on'

LCD can display, but HDMI can't output.

 

If I change the environment:

setenv bootargs_mmc 'setenv bootargs ${bootargs} root=/dev/mmcblk0p1 rootwait rw video=mxcfb1:dev=lcd,TIANMA050-WVGA@60,bpp=32,if=RGB24 video=mxcfb0:dev=hdmi,1920x1080M@60,if=RGB24,bpp=32 video=mxcfb2:off ldo_active=on'

HDMI can output, but LCD can't display.

 

Dose it mean that kernel don't support dual display or dual dispaly is implmented by applicantion?

 

BRs,

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