this post was submitted on 29 Jan 2026
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If your DE/Launcher uses systemd scopes properly you might be able to see something in the journal. As an example somewhere in my logs I can see this:
That's pretty clearly severe thrashing and an eventual OOM event caused by a game. If you're not familiar, the command
journalctl -e -b -1gives you the last log lines from the last boot. Usedanduto navigate the pager andqto quit. This will only work if the launcher you are using sets up transient systemd scopes and doesn't just fork-exec into the application (Fuzzel does the wrong thing by default, as do many others).I've also seen large Steam downloads causing such issues, so capping your download speed might help. As could enabling ZRAM.
Edit: Also, this is most likely completely unrelated but do note that Neon is basically abandoned. You should very much consider switching to a maintained distribution, whether that's another Ubuntu spin or Fedora or something else entirely.
Thanks for the journalctl command, I think I was looking for hints like this. I'll be reviewing my journalctl next time I get a crash. Regarding Steam, since it's using NVME both for the OS and the gaming disk, it downloads at rather crazy speeds without slowing down the OS (as long as I'm not trying additionally something else also crazy of course...but I can continue browsing and watching videos just fine).
Thanks! Yeah I might reconsider a whole system wipe. I've tried shortly Fedora before, and Nobara for a few years, but I think I'd prefer something Ubuntu-based with KDE. Something that it's not Kubuntu, that is. I don't want snap crap.
You can remove snap from KUbuntu pretty easily. Here's a guide in case you change your mind.