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Reboot. Try to boot into the recovery system from grub. When it comes up, or anything with a CLI, do (as root) a apt-get -f install. Let the update process finish, you can make sure with apt update && apt full-upgrade that no error messages remain. Your system should be in a usable state then, this happens more often than I like.


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I ran into this after updating from 15.10 Wily Werewolf. I use Nvidia's prime-select command to enable and disable the dedicated graphics card. (After using Ctrl+Alt+F1 and logging into the console) I disabled my GT 540M graphics card with sudo prime-select intel followed by sudo reboot. Upon reboot I was able to log into Unity. Obviously this is more of ...


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In my case, what worked was enabling Virtualization on my host computer's BIOS. After that it all worked. Hope this helps


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Lightdm-gtk-greeter uses a different icon set. This question on launchpad explains the naming theme for the icons. I'm using lubuntu 14.04 and the aforementioned icons are located in /usr/share/icons/hicolor/scalable/places. If you already have an icon (svg file) you want to use, move it to that location and name it sessionname_badge-symbolic.svg where ...



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