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7

Even though you assume that it is not a graphics drivers issue ... trying this solution might be a chance to get your problem solved - it worked in many similar cases ... first remove the drivers. Highlight the Ubuntu entry in the GRUB boot menu and press the E key. Add nouveau.modeset=0 to the end of the linux line - press F10 to boot. On the login ...


5

Root account is disabled in Ubuntu for login by default. You would have to change root password to login directly. Personally i suggest you login to root through your sudo account with sudo -i


3

It looks like you installed another Display Manager somehow (it can happen with a lot of package installations, including other desktop environments). Judging by your background, you installed the default version of Ubuntu. Here's how to get lightdm (the default login screen/Display Manager) back: Open a terminal (Ctrl+Alt+T) and run sudo dpkg-reconfigure ...


1

Open System Settings and go into User Accounts. Select your user, and there should now be an option on the right to enable automatic login. Turn that on and you're done.


1

Yes you can login as a root user however this is in no way suggested. I would also recommend sudo -i to emulate root. However this being Linux you can do as you wish and enable root. This can cause major security holes and is not recommend! sudo passwd root create a password and now you can login as root. To disable root sudo passwd -dl root You can read ...



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