I once transferred an SSD with a Linux Mint installation on it to another computer. It booted up without any issues whatsoever so I’d say it’s perfectly doable.
For KDE specifically I think there’s a dbus interface that can be called to switch it. You can find it with QDBusViewer or D-Feet.
I’d imagine XWayland would follow the same since it’s essentially a Wayland client. But if you ran the xmodmap under xwayland, that may have inverted it in xwayland, and it’s already inverted in KWin which would double invert it aka put it back to default.
Otherwise doing it at the evdev level will definitely work. It’s a bit of a nuclear option but if it works…
Random segfaulting is not something that “just happens” because of an OS misconfiguration, then if the same problem happens on Arch as well as on a clean EndeavourOS live image it convinces me that it is in fact hardware related somehow. As you have already replaced the RAM, my guess is CPU or motherboard issue.
Zen2/B450 is a widely used and well supported configuration on Linux that you normally shouldn’t have issues with, but Zen2 CPUs are rather notorious for having fragile memory controllers, and sometimes dodgy AGESA firmware releases that can cause issues on some CPUs. I used to have a 3600X myself that started crashing at idle around a particular firmware release of my motherboard, and it was fixed by a subsequent release.
BTW the fact that it doesn’t happen on Debian doesn’t necessarily mean that Arch is the culprit. It could just be that Debian is not triggering the fault because of different, perhaps more conservative, compiler optimizations.
As a last ditch effort, you could try resetting your entire UEFI (bios) settings to default, preferably by pulling the CMOS battery.
BTW, is it only GUI applications that are segfaulting? Or other programs as well? Do you have an old spare GPU you can test with?
I find sometimes installing a bunch of different DEs can cause weird cross-issues, so I tend to just make VMs to try out new things. I have a bunch of them on an external drive like little specimen jars lol.
Also as a side note, I keep a VM that’s as close to my current setup as possible, so if I get the urge to try something weird I can do it there first and see if it breaks anything.
Linux Mint is great, I used it as a daily driver in college on an old IBM T42, however, modern Linux on a modern PC – Debian/Ubuntu with KDE.
Basically, Kubuntu.
Kubuntu gets you off the ground running with Debian core, KDE Plasma, which is familiar to the Windows workflow and all the compatibility of Debian/Ubuntu. Steam and Proton work FLAWLESSLY via Vulkan API. Zero loss of performance.
If you want to spend a ton of time relearning an OS/tinkering however, get some flavor of Arch.
The AUR is crazy, it’s like a huge software library and the Wiki is expansive, BUT, you will be relearning absolutely everything.
Sorry other Linux people, I’m a jaded lifelong Windows user, who unironically uses Kubuntu and Artix on seperate machines.
I’m using Rocky on my main server at the moment, I was/am used to Debian based operating systems beforehand but wanted to learn red hat without dealing with Oracle directly.
It was definitely a step curve getting to understanding the os but I’m quite happy with the stability of Rocky and it does everything I need and more. I think the real question is which would you get more enjoyment out of as far as learning and personally I don’t think the learning curve is as steep with Debian.
The best thing I can advise is just back up your data regularly and if you’re not vibing or something breaks don’t be afraid to change to something different, though as an arch user I’m sure you’re used to things breaking.
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