AnsweredAssumed Answered

Navigationbar not display well on hdmi, when lvds+hdmi dual display.

Question asked by Xiyuan Zhou on Nov 27, 2015
Latest reply on Dec 6, 2015 by Xiyuan Zhou

I am working with imx6q, in android 4.4 and kernel 3.0.35.


I want to make both lvds and hdmi display same, and lvds as primary, while hdmi as secondary.

So I set bootargs,

"console=ttymxc0,115200 androidboot.console=ttymxc0 vmalloc=400M init=/init video=mxcfb0:dev=ldb,LDB-1024x600,if=RGB666,bpp=32  video=mxcfb1:dev=hdmi,1920x1080M@60,if=RGB24,bpp=32  video=mxcfb2:off fbmem=10M,28M androidboot.hardware=freescale "


when android boots up,

lvds display well, it is like this,



however, hdmi display not well, the buttons under the screen are not displayed, I circled them in red.



what is the problem, my lvds's resolution is 1024x600, and hdmi resolution is 1920x1080.


If I config hdmi as primary, and lvds as secondary,

I set bootargs,

"console=ttymxc0,115200 androidboot.console=ttymxc0 vmalloc=400M init=/init video=mxcfb1:dev=ldb,LDB-1024x600,if=RGB666,bpp=32  video=mxcfb0:dev=hdmi,1920x1080M@60,if=RGB24,bpp=32  video=mxcfb2:off fbmem=10M,28M androidboot.hardware=freescale "


results are as follows.

lvds screen: no buttons on the bottom of the screen.


hdmi screen, ui seems good.




Anyone knows something about it ? Any suggestion is appreciated.