Blinking indicator twice every second and no display

I am using Radxa Zero 3W and have etched the bullseye image radxa-zero3_debian_bullseye_xfce_b6.img to microSD following this guide:

Power is OK (worked for raspberry pi 4 which is more demanding) and nothing is connected to the board other than HDMI and power-in.

I two blink in light indicator then 1 second of sleep. and no image from HDMI.

I also saw this thread which got no answer.

Please help :folded_hands:

Please help if possible :folded_hands:

I would appreciate some help if possible, or documentation about the light patterns :slight_smile:

I ended up being able to use it headless without desktop, even with the constant blinking the headless worked.
Used Armbian minimal and edited the setup file with wifi and users credentials.

Could not make any desktop work, i tried multiple.

I am having this issue myself with my Zero 3E, not sure why.

I cannot see any HDMI output on the monitor. Just the power LED blinking twice every second or so.

Any ideas what could be the issue?

I tried to switch power supplies but no change in the behavior.

Thanks.

Marius.