![]() ![]() Correlation isn't causation, but in addition to a broken display manager, something pretty comprehensively borked my Python3 installation at the same time, to the extent of having to nuke and reinstall. This fix doesn't rise to much more than mystic incantations as I have no idea what went wrong. This will create a password for root, essentially enabling the account. After reconfiguring gdm3 logins started working again. ![]() I do not know if installing lightdm was necessary or if just reconfiguring gdm3 would have done the trick, but at least it would have given me a usable system. sudo dpkg-reconfigure gdm3 (choose gdm3in dialog).In Linux, open a terminal window and type ifconfig -a In Windows, open a. login to GUI using lightdm to ensure it works unable to open display 1 By default start from Ubuntu 21.sudo dpkg-reconfigure lightdm (choose lightdm in dialog).If youre on the old style menus, Applications Accessories Terminal. Now double click the file and you are in a terminal. From the file browser right/cick the file -> (click) Properties -> (checkmark) Allow executing file as program -> Close 5. I fixed it by switching to a tty login, installing lightdm, configuring it as my display manager, rebooting, logging in, setting gdm3 as the DM and rebooting again. There are a couple of methods: If youre running Unity: open the dash, type terminal, hit Return. From the Ubuntu Dash search type gedit 2. You'll arrive in a familiar-looking terminal screen. Xauthority) -rw- 1 root root 53 Nov 29 10:19. If in the output the line (and look for the line that ends with. In this case username will be your username you set when you installed Ubuntu. Enter your username in the prompt, then provide your password when asked. 1 Answer Sorted by: 12 Press Ctrl + Alt + F3 and login into the shell using your username and your password. Ubuntu will drop out of the graphical login screen and into a black and white terminal. This happened to me after a reboot following a kernel version bump. Instead, press Ctrl + Alt + F3 on your keyboard.
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