I decided to remove the packages when I recieved the MokSB failed message telling me that it could NOT change the secure boot settings. I was able to log in to TTY using ctrl+alt+F1, but had no internet access seeing as the driver is proprietary as well. I followed the advice of SiddharthaRT at the top of this post and did chown username:username. This indicated a configuation problem on my main account. So my main account was still accessable via CLI and Unity was working for all other accounts. From the Unity login I could login and logout Test user with no problem. I then added a test user and gave them sudo rights. Logout took me back to CLI login and Ctrl+ Alt+ F7 took me back to Guest desktop. I entered my main user name and password and logged in with command mode. However once logged in as Guest I Ctrl+ Alt+ F3 and got to a terminal login. I could login as Guest but I had no Sudo rights and thus no control. A new blank Unity desktop appeared and everything hung.įorcing VirtualBox to close and then rebooting Ubuntu I got to the login screen but kept looping back to this same screen everytime after entering the password. Ubuntu 12.10 is installed in VirtualBox running on Windows 7 and uses Unity.įrom the Desktop I Ctrl+ Alt+ T into terminal mode and then tried to run 'startx' (I was trying to help a friend over the phone late at night.but this was a stupid thing to do). Yes I caused a Login Loop on my main Ubuntu 12.10 user and the fix was simple. Once that is done, reboot ( sudo reboot), and when you are confronted with the login page, select the Lubuntu environment instead of Ubuntu. This will install a much lighter desktop environment which should work for now (should enable you to login and use your computer). If this still doesn't work, go back to the 3rd terminal ( ALT+ F3), login, and enter this command (same procedure): sudo apt-get -y install lubuntu-desktop Then reboot using the same command as before ( sudo reboot). If lxdm is not selected, select it by using the UP and DOWN arrow keys, and press ENTER to accept that selection. This will show a DOS-like dialog after a bit. If this does not work, try going back to the 3rd terminal ( Ctrl+ ALT+ F3), login, and enter this command (pressing ENTER after you have typed it): sudo apt-get -y install lxdm Then reboot your computer using this command: sudo reboot Note that the password will not show when you are typing it!): sudo apt-get update Enter these commands and press ENTER (or Return) after writing each one (you will have to enter your password when it shows something like password for USERNAME. From there you should be given a shell (a program that allows you to enter commands, sort of like windows' cmd.exe). You should be given an unix-style login prompt, so enter your username and password there. This might be incompatible with your graphics card therefore, search with sudo apt-cache search nvidia-+$ for the package you need, and install it. For example, on Ubuntu 16.04, nvidia-current points to the version: 304.131-0ubuntu3. In that case, search the latest compatible driver for your video card and install it. Please note that sometimes nvidia-current might install the wrong driver. If you're lucky enough, problem solved, you should be able to login to Unity. TL DR, just try logging into the shell ( Ctrl+ Alt+ F2 or whatever F between F1 and F6) and type sudo add-apt-repository ppa:graphics-drivers/ppa Its installer is quite capable too and it uninstalled successfully my hack-installed unstable version from Nvidia website. The solution here was to install package nvidia-current from Ubuntu repos it is an awfully outdated version, but it's tested properly at least. I realized I have Nvidia drivers from official website which are not really stable and tested (so I've read and also experienced in the past). I had this and after looking at /var/log/Xorg.0.log I found out that it's a Nvidia problem (there was a line saying Xlib: extension "GLX" missing on display ":0).
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