Comment # 4 on bug 1031134 from Bj�rn Lie

(In reply to Jonathan Corbet from comment #3)
> Sorry for the slow response, I've been away from the machine in question.
> 
> I was indeed running under X.  I installed wayland, and can now state
> definitively that the problem does indeed reproduce in that environment.  I
> can also attest that, under wayland, it blows away the entire session,
> leaving you staring at the login screen trying to remember when you last
> saved your work.  I do believe that I have tested the wayland option as much
> as I need to for now.
> 
> The system does have xf86-video-intel installed.  Will remove and see what
> happens thereafter.

Since you had the same problem in a wayland session, it's likely not the driver
being the issue (since xf86-video-intel will not be in use for wayland).

However, yesterday we released a new gjs-1.48.4 in TW, that hopefully will
contain the fix for your troubles.

https://bugzilla.gnome.org/show_bug.cgi?id=781799

Note that it says for wayland, but some reporters have noted to have similar
crashes like you are seeing on X11. Though there have been opened a couple of
follow up bugs to the one above.