gnome-shell crashed with signal 5 in _XIOError()

[Oleksandr]

have kind of complex issues after upgrading from 17.04 to 17.10, and also want to mention that not sure that all of them relates to Gnome

1 - lock-screen (Super+L) forces back to desktop after 15-25 minutes without asking for a password (is it security-related issue or not?)
2 - multiple monitors connection issue (looks like OS not able to operate 3 monitors: built-in laptop display + 2 monitors connected via dok-station) the main issue was that while working, all displays may fall sleep, even while in system settings it was prohibited.
after i tried deactivate 3-rd display from system preferances, and than activate it acain - i just could not activate, after pushing button Apply - again going back to 2 active displays.
in cmd command xrandr --listmonitors and --listactivemonitors shows only 2 available displays, but after running xrandr --auto, third monitor was identified, but it is unable to set is as separate monitor, only as mirror of built-in display.
3 - some times, after locking laptop, instead of lock screen it make my user log-off (after loging in getting message about gnome crash)
4 - some times after unlocking display it takes 2-5 seconts to display top gnome bar (i see open app windows but dont see anything else on desktop)

PS: Sorry for such mess of issues, i'm using this report tool first time.

PPS: can attach logs or any dumps if it will be needed/requested.

ProblemType: Crash
DistroRelease: Ubuntu 17.10
Package: gnome-shell 3.26.1-0ubuntu4
ProcVersionSignature: Ubuntu 4.13.0-16.19-generic 4.13.4
Uname: Linux 4.13.0-16-generic x86_64
ApportVersion: 2.20.7-0ubuntu3
Architecture: amd64
CurrentDesktop: GNOME-Greeter:GNOME
Date: Thu Oct 26 20:33:18 2017
DisplayManager: gdm3
ExecutablePath: /usr/bin/gnome-shell
GsettingsChanges:

InstallationDate: Installed on 2017-02-03 (265 days ago)
InstallationMedia: Ubuntu 16.10 "Yakkety Yak" - Release amd64 (20161012.2)
ProcCmdline: /usr/bin/gnome-shell
Signal: 5
SourcePackage: gnome-shell
StacktraceTop:
 ?? () from /usr/lib/x86_64-linux-gnu/libmutter-1.so.0
 _XIOError () from /usr/lib/x86_64-linux-gnu/libX11.so.6
 _XEventsQueued () from /usr/lib/x86_64-linux-gnu/libX11.so.6
 XPending () from /usr/lib/x86_64-linux-gnu/libX11.so.6
 ?? () from /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
Title: gnome-shell crashed with signal 5 in _XIOError()
UpgradeStatus: Upgraded to artful on 2017-10-24 (2 days ago)
UserGroups:

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make this software better. This particular crash has already been reported and is a duplicate of bug #1505409, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.