thats work very well,
I read in this post: How To Install LightDM 1.7.0 On Ubuntu 13.10/13.04/12.10 And Linux Mint 16/15/14 and I ran:
sudo add-apt-repository ppa:lightdm-gtk-greeter-team/stable
sudo apt-get update
sudo apt-get install lightdm-gtk-greeter
but I disliked it, so I can't solve to my display manager default for Ubuntu, and after I did this:
Open lightdm.conf for editing in nano text editor:
sudo nano /etc/lightdm/lightdm.conf
You must have the following settings under [SeatDefaults]:
user-session=ubuntu
greeter-session=unity-greeter
Save and reboot.
It's great, this works. Thanks for your support.
sudo dpkg-reconfigure lightdm
worked after I installed gdm.sudo gedit /etc/lightdm/lightdm.conf
and added this:[SeatDefaults] greeter-session=unity-greeter user-session=ubuntu
Sorry but not for a lack of trying and despite reading (askubuntu.com/editing-help#comment-formatting) I am unable to format the comment - it should be on 3 lines. I then removed lightdmsudo apt-get purge lightdm
and reinstalled itsudo apt-get install lightdm
and after rebooting it worked. What a drama! And a waste of 2 hours of my life!sudo apt-get remove lightdm-gtk-greeter && sudo apt-get install --reinstall unity-greeter
worked for me. Question on that here