Btw, on bugs killing X, current Trisquel 12 and Emacs (basically a FLOSS Ubuntu 24.04 LTS) if it's being run with M-x Mastodon it might bring the whole X stack down, even if run from a terminal.
These kinds of bugs could be slashed down by killing the dependencies as the Hyperbola GNU/Linux it's doing. No DBUS, no SystemD, no nonsense. They have no Emacs in -testing but you can freely build yourself and this bug won't happen for sure.