Hope I am not alone with this weird behavior. When power cycling my Raspberry PI 4 with Home Assistant OS, I can ping the “server” but cannot load or access Home Assistant, once I plug in the HDMI cable connected to a Monitor the UI loads immediately. Which leads me to believe that it is booting successfully, but waiting on something before allowing me to access the UI.
I have made some changes to the config file as referenced in this post (here), however with the behavior I do not think this is the same “issue”.
# uncomment
hdmi_force_hotplug=1
# uncomment to force a specific HDMI mode (this will force 1080p)
hdmi_group=2
hdmi_mode=82
I have the same issue as the OP except I can’t figure out how to get to my config.txt to add the entries he describes. I am using a RPi 4 with the image from Raspberry Pi Imager > Other Specific Purpose OS > Home Assistant.
The only command line interface I can find is for HA not for the underlying OS