Unable to view SIGMA TILE display via HDMI

[LaurentGermain]

Did anyone meet such display issue?

I tried multiple cables/monitors, restart the  sigmaTile, but never manage to have the display working.

It works well ( using ethernet)

But as i cannot have it working on a monitor, i can not enable/configure wifi.

[mthakker]

Hey Laurent,

There are two ways to configure the wi-fi.  The first is as you said, through a monitor.  This does take a significant amount of extra electrical power, so make sure you've connected the Pi to a power source that delivers at least 1 amp worth of current.

The other way is to access via SSH and follow this document:

https://www.raspberrypi.org/documentation/configuration/wireless/wireless-cli.md

Let me know if you have any more questions,

Milan

[LaurentGermain]

Thanks milan,

i tried many ac adapters but none worked

I finally was able to have display working by changing in/boot/config.txt

config_hdmi_boost=4

[tfeuillerat]

In my case update the file with "config_hdmi_boost=4" didn't solved the issue.

I had update it with the following options

#hdmi_force_hotplug=1
#hdmi_drive=2

Then after a reboot the screen connected in HDMI was working.