LVDS and HDMI simultaneous output

I am having a hard time setting both LVDS and HDMI outputs simultaneously on my Ixora board.

I followed instructions on the site and set vidargs as follows:

vidargs=‘mxc_hdmi.only_cea=1 video=mxcfb2:dev=hdmi,1920x1080M@60,if=RGB24 video=mxcfb0:dev=ldb,800x600M@60,if=RGB666 ldb=sin0 fbmem=32M’

Board boots up correctly and displays boot and GUI on LVDS, but there is nothing shown on HDMI.

I tested fb2 using: cat/dev/urandom > /dev/fb2 and it shows that fb2 is working correctly.

How can I display the content of FB0 on FB2 at the same time?
Is dual display supported at all on Ixora?

Best Regards,

What exact software versions of things are you talking about?

Please note that e.g. Vivante’s downstream X driver does not support multiple display outputs. However, one could e.g. run X on one display and play video or display a simple framebuffer UI on the other display.