Issue with load after login into Ubuntu

[Pavol]

When I turn of computer, then turn on and change graphical environment (from default Ubuntu environments) in login manager, screen is empty and I see only background color. HDD stop load (don't load) gnome-shell and other important tasks.

- On my computer is all software fully actual.
- I am logged on in Ubuntu Single Sign-On (in PC Ubuntu). It is probably very helpful for developers for find issue.

Tasks for developers of Ubuntu:
- add/create in next update effective diagnostic tool for issue of this type. Source of issue will automatically instantly sent via internet to Ubuntu developers. If is it no possible, source of issue (bug report) will automatically saved on HDD, and when will successfully logged, issue will sent to Ubuntu developer team
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Other bug with Ubuntu Software
If I install any application from Snap Store and look on other application in Ubuntu Software during installation, I see small issues. More information you can see on print-screen – in was during installation moment of Skype. Text of notification is incorrect too.
http://linuxos.sk/media/attachment/blog_post/99/153/Skype_ako_snap_bal%C3%ADk_sa_mi_podarilo_nain%C5%A1talova%C5%A5_tie%C5%BE_na_druh%C3%BD_pokus.jpg

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: gnome-shell 3.28.1-0ubuntu2
ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17
Uname: Linux 4.15.0-20-generic x86_64
ApportVersion: 2.20.9-0ubuntu7
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Mon May 21 20:01:26 2018
DisplayManager: gdm3
GsettingsChanges:
 b'org.gnome.shell' b'command-history' redacted by apport
 b'org.gnome.shell' b'favorite-apps' redacted by apport
 b'org.gnome.desktop.interface' b'gtk-im-module' b"'gtk-im-context-simple'"
SourcePackage: gnome-shell
UpgradeStatus: No upgrade log present (probably fresh install)

[Daniel van Vugt (vanvugt)]

When you only see the background colour, is that after you type your password, or before?

Also, please run 'lspci -k' and attach the output here.

It sounds like you might be describing bug 1766137...

[Pavol (pritel)]

Hello Daniel,
issue I see after type of password.

I send you video of my issue
https://vimeo.com/271227138

In attachment I send you result of lspci -k

[Daniel van Vugt (vanvugt)]

Thanks for the attachments.

It seems you are describing bug 1766137. It also seems you might be experiencing bug 1765261.

Fixes for both are coming soon, but not yet available in 18.04.