The problem about jetson tx1 HDMI output

Hi all:
I modify the jetson tx1 HDMI output resolution of 576i@50Hz,
it can display the image Just power on, but then it becomes a black screen,
I found that the value of a register DC_CMD_INT_STATUS_0 also changed from 0x6 to 0x106。
I do not know what caused it, Can you give me some advice?

Thank you

Hi,

Have you tried xrandr after your ubuntu desktop shown?

In most of cases, HDMI output resolution should depend on your monitors’ EDID. The resolution always gets overriden when userspace comes up.

Please take at look.
xrandr manual:
https://www.x.org/releases/X11R7.5/doc/man/man1/xrandr.1.html