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Farooq
Asked: 2014-03-13 08:21:32 +0800 CST

Black Screen appear after set default display manager gdm [duplicate]

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Yesterday i install gdm and set it default display manager then l notice ubuntu is running but there is several lines appear on desktop when i want to shutdown system after i powered off system and start Grub Menu appear and normal boot system but nothing is appear and black screen is regularly appear even after several restart.

12.04

1 Answers

  1. Try this:

    on that black screen click Ctrl+Alt+f1

    enter your user-name

password:your password

$ sudo su

enter your password

    run

    # dpkg-reconfigure gdm

    or

    # dpkg-reconfigure lightdm

    and choose lightdm

    reboot

    (sorry for my bad English)

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