freezing systemd and basic load in ubuntu
 

I am loading my laptop to ubuntu: in grub2:
if I am selecting ubuntu: everything freezes and I see only purple screen if I am selecting other options -> systemd : I see logon screen -> passing credentials to linux -> and see only default Ubuntu wallpaper (guest session gives the same) how to fix this issue?

so you were never able to boot into ubuntu?

is this a continuation of this thread?
how did that go?

fwiw, i have never even seen mention of systemd inside a grub menu. are you sure that this is the grub menu?

No, I have load my ubuntu succesfuly, but after some updates and installs something went wrong
I have installed KDE plasma alongside with Unity, but it doesnt help too
Dont know what is broken

that is what's broken.
KDE mostcertainly doesn't play well with Unity.
However, I don't see how it could affect your grub.

if you can give better info than "something went wrong" we might try to fix it, otherwise i'd say a reinstall is in ordered (and a lesson learned).

gnu/linux is very configurable, but it requires the user to act responsibly.

The workflow was like this:

1. Installing linux Ubuntu 15.04
2. Updating installing soft etc
3. After clicking power off Ubuntu hanged up, so after 30 minutes of hang I have turned it of from power button
4. After powering on standard loading of ubuntu shows only purple background
5. After selecting "other boot options" there are such things like boot from ../systemd and recovery : nothing helps
6. Loaded from something called systemd load and logon window showed. After passing credentials now I see not purple screen but ubuntu wallpaper.
7. Selected terminal "alt+ctrl+f1" . Installed kubuntu desktop, nothing helps too

yes.
it's the "etc" we're intersted in.

i guess i'm getting old, or maybe ubuntu is handling these things differently, but i never saw systemd mentioned in a grub menu.

AFAIK no separate window managers ever interfere. That's not the problem IMNSHO.
But I agree that it must have been the installing/updating thing.
Now, if you're familiar with apt-get and dpkg (--list), you can login to a tty ("Text-Terminal", no fancy graphical login screen), check what parts of your system you may have changed and just purge and reinstall those. (It may be helpful to edit /etc/apt/sources(.d/) to use just one distribution if you have added several.)
That's a debian sid user's advice, I'm afraid.
But I'm not a Debian native, so here's some more: google for "apt-get install", "apt-get purge" and "dpkg --list". There's man-pages out in the web, too. Read them with the google finds (stackoverflow.com and cybercity.biz often provide good help).
Hint: It's always good to aquire some shell experience. That's the only input most linux systems have in common nowadays (even embedded ones).