One HDMI monitor keeps turning off for about 5-10 seconds

I am using the thunderbolt USB-C cable that came with the dock connecting to my closed MacBook Air M3.

Monitor goes black randomly every 30min to an hour. Black screen for about 5-10 seconds. But does not show that it lost connection.

Sent an email to support with the diagnostic results.

I have turned on and off the monitor and the dock and restarted computer, but it still happens.

Not sure if connected, but my desktops kept switching when waking up computer a few weeks ago too.

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