MacBook Pro fails to recognize external display on LG monitor

I turned on this morning my Macbook Pro 2021 Apple M1 Pro with MacOS Sequoia 15.6 and my LG external monitor which is always pluged in with an HDMI cable but MacBook didnt recognize any external displays pluged in yet the monitor recognizes the input of an HDMI cable. The day before it was working just fine and nothing changed. Monitor is working, cable is working as well. Its just the Macbook that doesnt read any external display, any ideas?

[Re-Titled by Moderator]

Original Title: My external display doesn't connect anymore. Display detect HDMI input but Macbook won't recognize any external display..