Display different content on LVDS and HDMI on the IMX6QP Sabre SD

joshua_hong · ‎10-15-2019

Hi

I am running Android P9.0.0_2.2.0 on IMX6QP Sabre SD Board.

I have set the U-Boot environment following the Android Quick User Guide:

U-Boot > setenv bootargs console=ttymxc0,115200 androidboot.console=ttymxc0 consoleblank=0
vmalloc=128M init=/init video=mxcfb0:dev=ldb,fbpix=RGB32,bpp=32 video=mxcfb1:dev=hdmi,
1920x1080M@60,bpp=32 video=mxcfb2:off video=mxcfb3:off androidboot.hardware=freescale
cma=320M galcore.contiguousSize=33554432 loop.max_part=7
U-Boot > saveenv

The IMX6QP Sabre SD Board boot into Android 9.0.0 with cloned contents on both LVDS and HDMI screen.

I would like to find out, for the uboot set environment argument that i use, Is the set environment argument set to clone display mode? or is it able to play different content on each screen?

diegoadrian · ‎10-15-2019

Hello,

According to the Android Release notes for the Android release 9.0.0_2.2. The i.MX6Q is only able to play mirrored images in different displays(LVDS+HDMI). The BSP is not capable of play different content for each screen.

I apologize for the inconvenience this could give you.

Best regards,

Diego

joshua_hong · ‎10-15-2019

Hi Diego,

Thank you very much for your swift advise.

It is good enough to know that Android 9.0.0_2.2. is only able to do mirror images so that I don’t continue looking for possible solution at the wrong place.

Does earlier Android release able to play different image on different display?

I ask this because I can stop looking at android/linux release, and perhaps start looking at Gstreamer or Presentation API solution.

Once again, please have my appreciation on your advice. Have a nice week ahead!

Best regard

Joshua

Field Application Engineer

WT Microelectronics Singapore Pte Ltd

2 Serangoon North Ave 5, #05-01 Singapore 554911

Tel : +65 6853 1788 ext: 1067

Mobile : +65 9146 9763

Email : Joshua.Hong@wtmec.com<mailto:Joshua.Hong@wtmec.com>

Website : www.wtmec.com<http://www.wtmec.com/WT/?lang=en>;

diegoadrian · ‎10-15-2019

Hello,

Is possible to reproduce a video on two different screens using Linux and Gstreamer. Please see the following document. Hopefully, it could be useful to you.

https://community.nxp.com/docs/DOC-93449

Best regards,

Diego.

joshua_hong · ‎10-15-2019

Hi Diego

Thank you very much for your sharing! I wonder why this discussion have not show up in the search results when I was combing the tech support community discussion.

This is likely the solution for my enquiry. Kindly proceed to close this enquiry.

Thank you and have a nice week ahead.