Recently I’ve been noticing more problems with GNOME/X. While this one does not occur frequently, it is disastrous as it leaves the system unusable.
The desktop hangs, with applications no longer working correctly, such as Spotify no longer playing audio.
The system is not completely locked though, as indicated by “num lock” working correctly, as well as services continuing to run and messages continuing to be logged.
I’ve attempted to switch to another terminal for recovery (e.g. ctrl+alt+F3), but it just gives me a flashing underscore instead of a log in prompt. I’m not sure what else to do at this point, so I reboot the system.
Looking through journalctl, I see very little which is helpful. It starts off with gdm complaining about my system being too slow, which I find hard to believe is accurate.
Jul 02 17:40:12 fedora /usr/libexec/gdm-x-session: (EE) client bug: timer event9 debounce: scheduled expiry is in the past (-97ms), your system is too slow
There is not much else which is helpeful. However, there is one thing which stands out to me.
Jul 02 17:41:01 fedora systemd-oomd: Killed /email@example.com/app.slice/app-gnome-opera-19368.scope due to memory pressure for /firstname.lastname@example.org being 63.22% > 50.00% for > 20>
As an aside, this line is incomplete. What is the best way to copy such a long line to clipboard? I tried triple clicking it, but it only gave me the visible portion.
I searched for this message, but did not find anything I could use to help. I’m not sure exactly what this means. It sounds like Opera is using 62% of my memory. This is a massive amount, but it should not be enough to hang the system so drastically.
It also sounds like it was killed, so that should not cause the hang at all.
However it seems something is using too many resources, causing the system to become unresponsive for an extended period of time.
How would I go about monitoring this, or finding the root cause of the problem? I’m not sure what steps to take, given that the system is practically unusable in this state.
There is no warning as far as I’m aware either. Everything is running fine one second, then the desktop hangs the next.
Thanks for reading, as well as any ideas!