Sometimes, main display only work when connected to external monitor
Sorry for my English so bear with me.
The main display suddenly disappear until I connect it to an external monitor, and then both main and external monitor will work again. The computer still works while the main display loses it image, the monitor still has it backlight, the apple logo is still glowing, I can still adjust it brightness but no image, and I can still play music. Only if I connect it to external display the main screen suddenly works again, so both main and external display works again. And if I unplugged the external display, the main monitor will lose its image again, but it does not happen instantly, it will take probably 4 to 5 sec before it went black again. I dunno know, maybe there is a bug in graphic switching?
This issue only happens 2 times during my 5 year owning this macbook. The only way to resolved this problem is to restart the computer, and it will work fine again. I couldn’t remember the first time it happened, maybe a month ago or so. This does not happen during startup, this only happens maybe after using the computer for hours or even days without shutting it down. For now it’s not a huge issue for me because this happens so rarely and restarting the computer fixes the issue. But it still bothers for me because macbook pros are pretty expensive and I’m not sure if this issue will get worse in future or maybe it’s a symptom for much bigger and expensive repairs in future.
I’m not sure if this is a hardware or software problem, or a virus I guess? Or maybe a bug on graphic switching?
Device: Macbook pro mid 2015 with m370x
OS: MacOS Monterey latest
Ist dies eine gute Frage?