Repair the elementary OS Login

Question

I try to install global menu on my elementary OS from this tutorial This tutorial from Reddit and due to unmet dependencies I run:

INSTALL:
sudo add-apt-repository ppa:varlesh-l/test
sudo apt-get update
sudo apt-get install --reinstall wingpanel indicator-appmenu
gsettings set org.pantheon.desktop.wingpanel blacklist "['']"
killall wingpanel

But I didn't liked it so I ran the uninstaller:

sudo apt-get purge wingpanel indicator-appmenu
sudo add-apt-repository -r ppa:varlesh-l/test
sudo apt-get update
sudo apt-get install --reinstall pantheon-shell wingpanel
gsettings set org.pantheon.desktop.wingpanel blacklist "['libappmenu.so']"
killall wingpanel

Now I don't know what happened and I rebooted my PC.

As a result now I am not able to use elementary OS. Every time I start elementary OS it shows the login screen but after logging in nothing changes, it just continues to show the wallpaper from the login screen.

Now when I get to the login screen and proceed with Alt+Ctrl+F1 to the terminal. I have tried some steps and but none of them worked :/

Now I'm totally stuck. Last night I tried reinstalling lightdm again and run service lightdm restart but nothing happend, tried this tutorioal and got this:

 dconf-warning: failed to commit changes to dconf: Cannot autolaunch D-BUS without x11 $DISPLAY

I am using it with Windows 10 dual boot. I don't want to reinstall my elementary OS.

UPDATE

I got access from my windows to .xsession-errors and .xsession-errors.old with help from this Link

I checked the log folder (through my windows) and looked at x-0-greeter.log Link

(I think this is the critical error)

here my Xorg.0.log Link

and my lightdm.log Link

I have already tried some posts here with about the same issue, but mien couldn't be solved that way.

Answer 1

Try running

sudo apt-get install ppa-purge
sudo ppa-purge ppa:varlesh-l/test
sudo apt-get install --reinstall elementary-desktop

to remove the PPA and reinstall the desktop and remove any customizations