EDIT: I kinda solved it by installing Wayland (with Nvidia card, Ouch!) to replace Xorg. Not sure if this is gonna last though. Perhaps Manjaro is the one I'm gonna throw out FIRST if anything happens from now on.
What should be the first line of defense? Timeshift?
This happened after I installed AUR package masterpdfeditor and 2 applications from github (some hashing algorithm programs, I think they were "Dilithium" and "Latice-based-cryptography-main", one of them was provided by NIST.)
If using GUI: I login, black screen for few seconds, then back at login screen.
If going to ctrl+alt+f2, login successful, then startx, see picture provided (higher quality).
I tried adding a new user, but result is the same.
I have a live usb to do the Timeshift. (I can also chroot if necessary... But I'm not extremely professional)
Yeah the picture looks exactly like my experiences with Manjaro. Thanks
I've always suspected that Manjaro detractors might be mostly Linux beginners who do stupid stuff then give up at the first sign of trouble.
You're not exactly doing your best to change my mind.
The AUR is intended to be used with the official Arch repos; Manjaro repos are often weeks or sometimes even up to a month behind. Even the Manjaro devs put a warning for this reason.
So what if they're behind. AUR packages have dependency requirements too. They won't install if dependencies are not met. Unless you force it — but that wouldn't be their fault.
So how can an AUR package break something if it's not installed?