Jetson nano hdmi display unstable

i am trying to use jetson nano in some industry application , in some case ,the HDMI display crashed without any warning, but a few min later, it turns to be ok; in other case , the HDMI display crashed and nerver turns to be ok.

now i use DP port for display,this problem hasn’t occurred yet.

so what is the possible reason? how can i solve this problem ?

Follow this post to share necessary information and log first. Use the behavior/symptom to guess the cause is not a precise way.