After the restart step of upgrading Ubuntu to 18.04, tty is opening instead ubuntu-desktop. And when I enter my login name and password, I am still in the tty. This is happening again in every restart. How can I start the graphical desktop as normal?
2 Answers
Try logging in to your default desktop environment from the tty virtual console.
Open a text-only virtual console by using the keyboard shortcut Ctrl+Alt+F3.
At the
login:
prompt type your username and press Enter.At the
Password:
prompt type your user password and press Enter.Now you are logged in to a virtual console, and you can run terminal commands from the console.
Run the following command:
sudo systemctl start graphical.target
If that doesn't work, switch the login display manager from gdm3 to lightdm.
sudo apt install lightdm
sudo dpkg-reconfigure lightdm
sudo reboot
sudo dpkg-reconfigure lightdm
will open up a new window allowing you to select lightdm as the default login display manager. Use the arrow keys to select lightdm and press the Tab key to put the focus on <OK> and press Enter. Then reboot by running this command: sudo reboot
If that doesn't work either see if you can at least switch to text mode (for troubleshooting purposes) with no GUI stuff like the X server running.
sudo systemctl start multi-user.target
-
sudo systemctl start graphical.target
doesn't work. Also aftersudo dpkg-reconfigure lightdm
nothing happened but a message was printed to the console. The message was /usr/sbin/dpkg-reconfigure: lightdm is corrupt or not fully installed. May 4, 2018 at 12:35 -
I didn't see your edited message which is about installing lightdm. I am going to try this immediately. May 4, 2018 at 12:38
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If your lock screen goes low resolution (because of lightdm), please comment and I'll tell you how to restore the lock screen back to normal. The keyboard combination of Windows key+L may work for that better than clicking the padlock lockscreen icon.– karelMay 4, 2018 at 12:53
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Thank you very much. But the resolution of lock screen is fine as before. May 4, 2018 at 20:47
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1I was able to resolve it by going back to cli
CTRL + ALT + F1
and installing ubuntu desktopsudo apt-get install ubuntu-desktop
Jul 29, 2020 at 14:05
The commands below solved the problem on my PC:
sudo apt install lightdm
sudo dpkg-reconfigure lightdm
sudo reboot
sudo apt-get install compizconfig-settings-manager
DISPLAY=:0 ccsm &
sudo apt-get upgrade
Sifn In
button? The first four options don't work for me. Only the bottom option (Unity) works for me.journalctl -f
in a terminal and then trying to login again, I was able to see it barfed on a corrupted notifications file. Deleting this file took care of the problem. Possibly caused by a bad shutdown? I'm thinking there might be more such problems. Discovered the solution here: gitlab.gnome.org/GNOME/gnome-shell/-/issues/1552 (Usingtmux
to scroll back in the terminal was critical.)