How old is the Asus monitor? This might also be a hardware problem, bad caps related. Digital equipment is sensitive to power voltage fluctuations, and when bad caps are in the picture, even more so, making the equpment do all sorts of inexplainable things, like how could one thing I do on this monitor reflect on what the other monitor does or doesn't. In most cases, a small ground loop or a fluctuation caused by one of the monitors draining power when being turned on or off, might affect what the other one does or doesn't, if it alredy has failing caps. I've seen similar things happen on dual monitor setups when one of them has failing caps. One turns on just fine the other one doesn't, but you power them in reverse order, hey they work 😂.
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Very interesting. The Asus monitor is probably only 2 years old. It does work fine standalone with a spare laptop of mine that is running Windows 10 though.
Have you tried to replicate this behavior in Windows? Try it with a spare drive, see if you get the same irrational thing happening in Windows. If it happens, yeah, it's a hardware problem 😉... most probably bad caps. Bad batch maybe, even though it's only 2 years old, who knows.
I did not try replicating this behavior with a Windows install on my desktop. I did however perform a fresh install of Fedora 39 and that appeared to have fixed the issue, which is good news.
Well, it's not a hardware problem in that case 😉. Good thing you fixed it 👍.
Unlikely, but who knows? Can you try and boot Windows (install iso probably enough)? Or some very old Linux distro? It might just be your monitor becoming weird with age.
Edit: Alsobtry with a laptop or something and see how it goes.
The monitor with this "unresponsive button" issue is the Acer monitor, which is about 2 years old.
My brother had a screen that would occasionally reboot with fullscreen video, but not if you kept some window decoration onscreen. There must've been some degree of (you can not turn it off) image processing that would shit itself. Maybe it was local dimming related.
Everything is filled with software, and a lot of it is hot garbage.