Upgrading to Ubuntu 17.10 Artful Aardvark Beta

Since Ubuntu 17.10 have reached its final beta (Canonical going to release it by Oct 19), might as well upgraded my lappy from 17.04. The upgrade process still took quite a while but so far no show stopper issues.

Upgrading to beta release is quite straightforward, just type this command.
$ sudo do-release-upgrade -d

Release details with Linux kernel 4.13.
$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu Artful Aardvark (development branch)
Release:        17.10
Codename:       artful

$ uname -a
Linux thinkpad 4.13.0-12-generic #13-Ubuntu SMP 
Sat Sep 23 03:40:16 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux

Some issues encountered or observations after the upgrade.

(1) Invalid MIT-MAGIC-COOKIE-1 key Cannot open display ":0"
The leftover issue from switching to Wayland from X? Resolving this by removing the `.Xauhority` file.
$ rm -rf ~/.Xauthority

(2) Gnome Shell was noticeable slow.
I'm currently running Gnome 3.26 but it was considerable slow compare to previous version. Maybe this was due to switching to Wayland?
$ gnome-shell --version
GNOME Shell 3.26.0

(3) New Setting application.
I never pay much attention, but the new settings layout have switched to a side bar style, which is more easier to read and find. Seems to be influenced by mobile devices?

(4) Shutter, the screenshot application is broken.
You can't capture screenshot using Shutter anymore as Wayland does not allows an application to capture the content of other application (security reason). Unfortunately, you have to use Gnome Screenshot, which have limited functionalities (you can't bloody capture the screenshot of it self).

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