Take the 2-minute tour ×  I find that GNOME3, after some period
of time, freezes completely. The cursor is the only thing that
responds. I find that logging in from another machine, and
issueing a kill -1 to the gnome-shell process will temporarily
give me response. But after 5 or so minutes, it begins
freezing/unfreezing in a cyclical fashion, and quickly returns
to a completely unresponsive state.  By freezing, I mean just
that. GKrellM is frozen. So are clocks, and anything else that
would normally show updates.h Mouse cursor still moves, but
Keyboard, mouse buttons show no responses.  Some mornings, I
come back to my system, and it is frozen, so I ssh in, and there
is no longer any X server running at all! I reboot the machine
in that case.  Otherwise, if lightdm, gnome-session, and gnome-
shell are still running, kill -1 to the head gnome-shell (use
pstree -plG) will give you enough response to save any work, and
then log out to start the session over.  It seems (this may be
purely superstition) that runn