HDMI Black Screen or Wrong Size


I need to connect the Toradex Apalis with an HDMI Display (https://www.waveshare.com/wiki/10.1inch_HDMI_LCD_(B)_(with_case)#Resource):

  • 10.1"
  • 1280x800

Sometimes the display starts but it has a few centimeters of black space on the left and right edge.
Some other times the screen is always black.

I changed the bootargs_video parameter:
bootargs_video=video=mxcfb0:dev=hdmi,1280x800M@60,if=RGB24 video=mxcfb1:off video=mxcfb2:off video=mxcfb3:off fbmem=32M

This is the output I get:

android_console.TXT (33.3 KB)

This is the EDID file:

edid (128 Bytes)

As you can see in the log the FB0 has been set to “mxc_sdc_fb fb@0: 640x480”.
During multiple power cycles this size may change (e.g. 800x480, …)

Do you have any suggestions?

Toradex Apalis iMX6 Dual 1GB IT V1.1B, Serial# 10806406
U-Boot 2017.03-g984f31d (Jan 15 2019 - 10:54:33 +0000)

Dear @AiLux , hope you’re doing good!

I just sent you a private message about this issue.

Best regards,