i.MX6Q have no display with prebuild image boot from eMMC

[eddieyao]

Hi

     I have occur the problem that  i.MX6Q have no display with prebuild image boot from eMMC.

Below are my steps:

1. Copy the following files in release_package/image_*/sabresd_6dq to your MFGTool-Dir/Profiles/MX6Q Linux

Update/OS Firmware/files/android/ directory.

  eMMC/boot.img

  u-boot-6q.bin and renamed it to u-boot.bin

  eMMC/system.bin

  eMMC/recovery.bin

2. Change the SABRE SD SW6 (boot) to 00001100 (from 1-8 bit) to enter download mode.

3. And download the images by MFGTool

4. Download sucessful.

5.Change Boot Switch (SW6) to 11100110 (from 1-8 bit) to switch the board back to eMMC boot mode.

6. Power on / reset

7. Under the U-Boot prompt, please set the following U-Boot environment variable:

    I tried to boot with LVDS single display mode  and boot with HDMI single display mode and boot with LVDS & HDMI dual display mode.All of these have no display.

There something wrong? BTW,when dowanloading the images it have display with 4 penguins

Please help,thanks.

Attached is the log messages

Original Attachment has been moved to: No-display-log.txt.zip

[saurabh206 · Accepted solution]

Hi,

According to your log your video mxcfb0 is not set.

Use follwoing  commands at uboot promt, for HDMI display.

--> setenv bootargs console=ttymxc0,115200 androidboot.console=ttymxc0 vmalloc=400M init=/init video=mxcfb0:dev=hdmi,1920x1080M@60 video=mxcfb1:off video=mxcfb2:off fbmem=28M

--> saveenv

Reboot the hardware, it will give you output your HDMI dipslay.

Thanks,

Saurabh

PicusTech Software