I have done clean install recently of Ubuntu Desktop 15.04.
And I was able to log in to the graphical environment until I enabled "boot to text" like said there: How do I disable X at boot time so that the system boots in text mode?
1. commented out
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"2. added "text" to
sudo systemctl set-default multi-user.targetNow system does not load gui, just text prompt.
When I want the GUI, I start it using
sudo systemctl start lightdmgraphical login prompt appear, but when I pass the password screen flickers and again password prompt appears.
I even reverted all changes back: grub file and
sudo systemctl set-default graphical.targetHow can I log in to the GUI now, please?