Runs fine but no HDMI output despite reflashing

Original title 原标题:正常运行但hdmi无显示,重新烧录系统也一样

最初刷完ubuntu 系统后,正常使用都几天没问题,过了2天后再使用的时候发现HDMI没有显示,这时候显示器的led一会亮一会灭(就是HDMI信号是有时无的状态),不过一直没显示,用ssh连接后也正常运行,就是没显示,重新烧写emmc上的系统也一样,应该不是电源问题,使用的是之前正常使用的那个电源

I flashed Ubuntu earlier and it was working fine. Today when I tried to use it again I found out that there is no HDMI output. The LED on my display is flashing, indicating it detects HDMI then loses the signal, but no image during the whole process. I can SSH into it so the board is running, and I tried to flash another OS to eMMC with no avail. The power is the same one I used before when HDMI was working.


Sounds like hardware issue to me, but worth a shot to try with a different set of HDMI cable and monitor.