X connection to :0 broken (explicit kill or server shutdown)
I have a PC with archlinux and since weeks ago the WM OpenBox sometimes brokes and returns to console.
Now I have kernel 5.10.3-arch1-1 and an NVIDIA GeForce GT 710 that I bought 6 monts ago with two monitors plugged. I had the same issue with previous kernels.
I'm not expert, but the fault in journalctl points to the nouveau driver: "kernel: nouveau 0000:01:00.0: fifo: fault 01 [WRITE] at 0000000000240000 engine 00 [GR] client 0f [GPC0/PROP_0] reason 02 [PTE] on channel 2 [007fb1c000 systemd-logind[419]]"
I attached the log from journalctl and lshw command, so you can see mypc hardware.