Kamil,

Yes this sounds like the bug, so my upstream bug is a duplicate and yes when I tested things from rawhide the problem still occurred.  It's been a bit difficult to use GNOME at the moment as both the Wayland and X11 sessions have their own problems.  With Wayland I get these system hangs and with the X11 session the mouse randomly disappears.  Hopefully a fix for the Wayland issue can be backported to F23 so I can start using it again.

Thank you for your help thus far!

Best,
Alex G.S.

On Mon, Jan 4, 2016 at 8:01 AM, Kamil Paral <kparal@redhat.com> wrote:
> Dear list,

> Very odd bug on F23 on the GNOME Wayland session that results in a total
> system crash, I have to power cycle the machine in order to reset. When I'm
> in overview mode and move windows such as terminals from one monitor to the
> other or one workspace to the other I get this crash. See attached below for
> bug links.

> Do you have any information on this or whether a fix can be backported to F23
> from upstream?

> Thank you for any help you can provide!

> https://bugzilla.redhat.com/show_bug.cgi?id=1294943
> https://bugzilla.gnome.org/show_bug.cgi?id=753690

> Best,
> Alex G.S.

If it's not a crash but a system hang, and it happens only when moving a maximized window, then it's this:
https://fedoraproject.org/wiki/How_to_debug_Wayland_problems#Moving_a_maximized_window_between_monitors_freezes_gnome-shell
https://bugzilla.gnome.org/show_bug.cgi?id=757676
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