If you hit Ctrl Alt Delete very quickly in succession (I believe it’s 7 times in a row) it will bail out from a stop job and proceed with shutting down
Learned that trick because I was so tired of seeing that occur ha. Along that research I swear I recall seeing that it’s a KDE/SDDM issue but I might be getting some wires crossed on that (and thus, don’t quote me/take my word on that 😅)
You’d basically have to do the modifications at build-time rather than at runtime, so you’d need to edit the image definition to do so (or effectively, create an “extension” of the image) - at least in the case of UBlue/Fedora Atomic based distributions. Each one has their own system for doing this (VanillaOS for example works similarly, IIRC).
(There is the
rpm-ostree
layering system, though from what I know the usage of it is discouraged)This is pretty much why I don’t use atomic/immutable distributions on my main system - they can still be tinkered with, but it ends up requiring a lot of setup in order to do so. The last time I checked, creating custom images based on the UBlue images was quite complex and the documentation left me pretty confused. In theory, I shouldn’t have any issues with it, I work with containers all the time at both work and my own personal projects, but it just didn’t “click” for me at the time.
It’s been a bit though, so I’ll need to revisit it at some point - I just don’t really have the time currently to learn an entire system just to make tweaks to my system. That being said, I’m perfectly happy with Bazzite on my ROG Ally where I don’t need to make any tweaks to the base system (same with my Steam Deck running SteamOS - atomic based distributions are great for these devices/use-cases).
I have also tried out NixOS a few times, but same issue - it requires a lot of time investment to get the hang of the Nix ecosystem. For what its worth, I find the idea of atomic distributions to be intriguing and I see their appeal, but it just isn’t for me at the moment.