Description of problem:
I had an install of Fedora 25 that started to behave erratically before and after I attempted to use dnf system-upgrade to 26 Beta.
I downloaded a new ISO and wiped everything except my Home directory. I rebooted after a successful installation and tried to log in and gnome got stuck with the cursor in the middle of the screen on the black screen that generally shows before the wallpaper and shell pops up. No input from the keyboard or mouse worked, including attempts to switch to another tty.
I rebooted and before logging in switched to another tty and ran updates, which also completed without a hitch. I rebooted and exactly the same thing.

I can provide more details if needed but I'm not really sure what's going on so I'm not certain what information would be helpful.

Version-Release number of selected component:
gnome-shell-3.24.2-1.fc26

Additional info:
reporter:       libreport-2.9.1
backtrace_rating: 4
cmdline:        /usr/bin/gnome-shell
crash_function: _g_log_abort
executable:     /usr/bin/gnome-shell
journald_cursor: s=46e71575fe31413693717ef3d759f061;i=704;b=1e41a9c136314a3fa25ff7739f8e9bf7;m=143b7999;t=553c6b805e3ff;x=1b9d411466af419e
kernel:         4.11.9-300.fc26.x86_64
rootdir:        /
runlevel:       N 5
type:           CCpp
uid:            1000

Truncated backtrace:
Thread no. 1 (8 frames)
 #0 _g_log_abort at gmessages.c:549
 #1 g_log_default_handler at gmessages.c:3036
 #4 xserver_died at wayland/meta-xwayland.c:397
 #5 g_task_return_now at gtask.c:1145
 #6 complete_in_idle_cb at gtask.c:1159
 #12 meta_xwayland_start at wayland/meta-xwayland.c:569
 #13 meta_wayland_init at wayland/meta-wayland.c:352
 #14 meta_init at core/main.c:574

Potential duplicate: bug 1413346