jeremy ardley <jeremy.ard...@gmail.com> writes: > I noticed my Firefox -esr browser becoming progressively more > sluggish. Then suddenly I was back to the system login screen > > This is not the first time this has happened although previously when > it started getting sluggish I killed all Firefox related process > > System logs show the start of the event. > > 2023-12-03T11:35:03.335043+08:00 client kernel: [3792101.257070] > Isolated Web Co invoked oom-killer: ^^^^^^^^^^
You're out of memory, the system started killing processes to keep itself alive. It tends not be particularly "smart" about what to kill.