HDMI monitor is connected to tx2, but the screen is black

Nothing is displayed on the screen, what is wrong

I see the solid two green lights, along with two red lights, but I don’t get any HDMI output. One of the red LED’s is next to: “ALERT PCIE/SATA POWERED UP” ,I want to completely reinstall Ubuntu 18.04 or at least get it to boot. If you need any other information, please ask.

There is no update from you for a period, assuming this is not an issue any more.
Hence we are closing this topic. If need further support, please open a new one.

Which software release is that?
Is it a custom carrier board?
Is it a native HDMI cable without any adapter?