Hi,
This issue is currently specific to the Ubuntu LEB for Origen and is also being discussed under the LP bug #906762 [1]. Writing to a wider audience to get views of others who might have come across similar situation before.
Currently the LCD FB is registered as /dev/fb0 and the HDMI FB is registered as /dev/fb1. While booting up, by default /dev/fb0 is used as the primary display device and the output is routed accordingly. To use the HDMI display, we need to update /etc/X11/xorg.conf (and this needs to be updated every time we update the file-system.)
If we don't enable support for LCD FB, the display comes on HDMI during boot-time, but again that is not desirable considering we want to use both the LCD and HDMI with the same kernel binary.
Is there any way where we can force the default frame-buffer (whether to choose /dev/fb0 or /dev/fb1) during boot-time, might be through some kernel command-line options?
[1] https://bugs.launchpad.net/linaro-landing-team-samsung/+bug/906762