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I recently installed Ubuntu 18.04 LTS alongside Windows 10 in a dual boot configuration. The installation completed without error and Ubuntu boots up to a login screen. However, when I input my password and log in, there is no gui at all except a mouse on top of a purple background (the same background as the login screen). No keyboard shortcuts work after this login either. Does anyone know how to fix this?

  • 1
    which Desktop Environment you use? – Kuribo Kutsu Nov 12 '18 at 16:11
  • Gnome, the default – Fakename Bill Nov 13 '18 at 5:39
  • did you find a answer to this – geeker Nov 20 '19 at 7:14
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A few of the possibilities:

  • Boot into your system BIOS and disable the on-board graphics chip-set if you have installed a discrete graphics card.

  • If this does not help. Boot into Recovery mode Check file system (fsck)

If this also does not help. Boot into Recovery mode, drop to root terminal & Command:

apt update
apt upgrade
apt install --reinstall lightdm
dpkg-reconfigure lightdm

and select lightdm

and maybe

apt install --reinstall ubuntu-desktop

and reboot

  • If you haven’t reinstalled yet when at the purple screen try – Curiouskangaroo Mar 22 '19 at 13:45
  • Ctrl*alt+f7 follow onscreen instructions then type. startx – Curiouskangaroo Mar 22 '19 at 13:46

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